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  • 101.
    Feldmann, Andreas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi. Linköpings universitet, Tekniska högskolan.
    Olhager, Jan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi. Linköpings universitet, Tekniska högskolan.
    Internal and external suppliers in manufacturing networks: An empirical analysis2008Inngår i: Operations Management Research, ISSN 1936-9735, E-ISSN 1936-9743, Vol. 1, nr 2, s. 141-149Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The purpose of the paper is to explore the way manufacturing firms use internal and external suppliers in the design and management of manufacturing networks. The main area of interest is to explore the similarities and differences between internal and external suppliers, with respect to their roles and the reasons for choosing a certain type of supplier. We base our analysis on data from 104 Swedish manufacturing plants and their corresponding manufacturing networks of internal and external suppliers. The results of the study show that there are significant differences between the criteria that are influential in choosing a certain type of supplier. The choice of an internal supplier is largely based on a single corporate decision, while an external supplier has to perform well on a number of criteria (primarily quality, cost, and delivery dependability). When comparing the selection criteria with competitive priorities and plant performance, we find that the criteria for selecting external suppliers has a better match than those for selecting internal suppliers. The sample contained plants having only external suppliers as well as plants having both internal and external suppliers, but the selection criteria for external suppliers are the same for both groups and not dependent upon the presence or absence of internal suppliers.

  • 102.
    Fernegård, Hans
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik.
    Automatisk plastlisthanterare2005Independent thesis Basic level (professional degree), 10 poäng / 15 hpOppgave
    Abstract [en]

    Today a lot of goods is transported on wood pallets because it’s practical and enabels a fast way to load cargo. The drawbacks with pallets are that they weight a lot, are big and are relatively expensive. Therefore IKEA has developed plastic lists that can replace the europallet in some applications. In this examwork an automatic handling equipment for plastic lists are design from a requirement specification to a finished machine. The task of the plastic list handler task is to automatically mount plastic lists under goods. To make the engineering design work easier the plastic list handler were divided in to modules.

    The examwork has been performed at Linköpings Tekniska Högskola, Institutionen för konstruktions- och produktionsteknik, and at TEXO Application in Älmhult. TEXO Application started in 2001 by Bo Lidbom in purpose to find new market areas for TEXO Holding.

  • 103.
    Ferreira, Joao Dias
    et al.
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Ribeiro, Luis
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Akillioglu, Hakan
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Neves, Pedro
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Maffei, Antonio
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Characterization of an Agile Bio-inspired Shop-Floor2014Inngår i: Proceedings2014 12th IEEE International Conference on Industrial Informatics (INDIN), Porto Alegre, RS, Brazil 27-30 July, 2014, IEEE conference proceedings, 2014, s. 404-410Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Sustainability is currently one of the biggest challenges and driver of manufacturing industry. Nevertheless, with the decrease of product life cycles, the consumption of raw materials as well as the obsolescence of production systems increases. In this sense, agile shop-floors that enact companies with the ability to quickly reconfigure their shop-floors by deploying or removing modules are the key for sustainable industrial development. This paper attempts to characterize an innovative approach that relies on bio-inspired concepts as the main control mechanism, in order to foster sustainability by attaining the necessary shop-flooragility. Furthermore an experimental setup is presented and the results are analysed, in order to understand the influence and impact of the main properties that characterize the approach towards the system performance.

  • 104.
    Ferreira, Joao Dias
    et al.
    EPS Group, Dep. of Production Engineering Kungliga Tekniska Högskolan Stockholm, Sweden.
    Ribeiro, Luis
    Uninova, Dep. de Eng. Electrotcnica, F.C.T. Universidade Nova de Lisboa Lisbon, Portugal.
    Onori, Mauro
    EPS Group, Dep. of Production Engineering Kungliga Tekniska Högskolan Stockholm, Sweden.
    Barata, Jose
    Uninova, Dep. de Eng. Electrotcnica, F.C.T. Universidade Nova de Lisboa Lisbon, Portugal.
    Bio-inspired self-organised mechatronic-agent interactions to support product emergence2013Inngår i: ProceedingsIECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society,, IEEE , 2013, s. 7434-7439Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The emergence of modern manufacturing paradigms together with the growing interest on distributed architectures has been increasing the use of biologically inspired solutions. However, somehow along the way, developed approaches have converged towards more traditional systems where the physical and logical decoupled nature of the system has been partially lost. In this context, the presented work aims to introduce and analyse a new fully physically and logically decoupled bio-inspired self-organising approach that tries to bring to the mechatronic-agent based manufacturing architectures the dynamics of biological systems. Furthermore, the manufacturing systems are approached from a bottom-up perspective in an attempt to reduce the specification of the production processes to the minimum.

  • 105.
    Ferreira, João Dias
    et al.
    Kungliga Tekniska Högskolan, Stockholm, Sweden .
    Ribeiro, Luis
    Universidade Nova de Lisboa, Monte da Caparica, Portugal .
    Onori, Mauro
    Kungliga Tekniska Högskolan, Stockholm, Sweden.
    Barata, Jose
    Universidade Nova de Lisboa, Monte da Caparica, Portugal.
    Challenges and Properties for Bio-inspiration in Manufacturing2014Inngår i: Technological Innovation for Collective Awareness Systems: 5th IFIP WG 5.5/SOCOLNET Doctoral Conference on Computing, Electrical and Industrial Systems, DoCEIS 2014, Costa de Caparica, Portugal, April 7-9, 2014. Proceedings / [ed] Luis M. Camarinha-Matos, Nuno S. Barrento, Ricardo Mendonça, Springer Berlin/Heidelberg, 2014, Vol. 423, s. 139-148Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    The increasing market fluctuations and customized products demandhave dramatically changed the focus of industry towards organizationalsustainability and supply chain agility. Such critical changes inevitably have adirect impact on the shop-floor operational requirements. In this sense, anumber of innovative production paradigms emerged, providing the necessarytheoretical background to such systems. Due to similarities between innovativemodular production floors and natural complex systems, modern paradigmstheoretically rely on bio-inspired concepts to attain the characteristics ofbiological systems. Nevertheless, during the implementation phase, bio-inspiredprinciples tend to be left behind in favor of more traditional approaches,resulting in simple distributed systems with considerable limitations regardingscalability, reconfigurable ability and distributed problem resolution.This paper analyzes and presents a brief critical review on how bio-inspiredconcepts are currently being explored in the manufacturing environment, in anattempt to formulate a number of challenges and properties that need to beconsidered in order to implement manufacturing systems that closely follow thebiological principles and consequently present overall characteristics ofcomplex natural systems.

  • 106.
    Filipovic, Edin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Analys och förbättring av materialförsörjning och lagerstyrning2011Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Effektivt materialflöde är en förutsättning för lönsamhet i ett företag. Detta uppnås till viss del genom ett lagerstyrningssystem vars uppgift är att säkerställa önskad servicenivå till rimliga kostnader.

    I detta arbete undersöks förbättringsmöjligheterna i ett företag, som inte anser sig ha en bra balans mellan kostnader och lagertillgänglighet. Målsättningen har varit att hitta metoder som både kan sänka kapitalbindningen och höja servicenivån i förrådet.

    Artiklarna klassificerades efter deras återanskaffningstid och årliga förbrukning. Sedan simulerades lagernivåerna hos ett antal artiklar i olika grupper, för att undersöka vilka förbättringar som kan uppnås med ett beställningspunktssystem. Detta lagerstyrningssystem är uppbyggt av två parametrar, säkerhetslager och beställningspunkt. Avsikten har varit att hitta enkla principer som underlättar dimensioneringen av dessa.

    Resultaten visar att kapitalbindningen och servicenivån i dagsläget kan förbättras. Men för att uppnå detta krävs det att hela organisationen anstränger sig för att skapa rätt förutsättningar för ett effektivt materialflöde. Ett lagerstyrningssystem åstadkommer inte detta på egen hand.

  • 107.
    Fredriksson, Anna
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska fakulteten.
    Jonsson, Patrik
    Chalmers Tekniska Högskola, Logistik och Transport.
    Consequences and Opportunities of a Global Two-Factory Production Network2014Inngår i: Global Operations Networks: Exploring new perspectives and agendas / [ed] Dmitrij Slepinov, Brian Vejrum Waehrens and John Johansen, Aalborg: Aalborg University Press , 2014, 1, s. 285-306Kapittel i bok, del av antologi (Annet vitenskapelig)
  • 108.
    Fredriksson, Anna
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska fakulteten.
    Jonsson, Patrik
    Chalmers Tekniska Högskola.
    The impact of knowledge properties on international manufacturing transfer performanceInngår i: Production planning & control (Print), ISSN 0953-7287, E-ISSN 1366-5871Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This paper examines how knowledge properties of a manufacturing activity transfer in international manufacturing network impact performance during the transfer itself and after steady state has been reached. With the aid of survey data from 178 companies, we use hierarchical regression to test the relationships. It is found that knowledge properties as a group significantly affect both performance measures when controlling for the effects of sender unit experience, sender unit size and receiver unit experience. The activities transferred thus impact the success of the transfer. The control variables of sender unit experience and receiver unit experience have their relatively strongest performance effects after steady state has been reached. Testing the performance effects of single knowledge property dimensions, we identify independency to have the strongest relative performance effect, which validates and advances previous research. This is one of the first survey studies to cover both the performance of the transfer itself and after reaching steady state of manufacturing transfers. Several strands of further research are therefore identified.  

  • 109.
    Fredriksson, Anna
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska fakulteten.
    Malm, Anna
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten. Saab Aeronautics, Linköping, Sweden.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    What are the differences between related offset and outsourcing?: A case study of a related offset business at Saab2016Inngår i: International Journal of Technology Transfer and Commercialisation, ISSN 1470-6075, E-ISSN 1741-5284, Vol. 14, nr 2, s. 132-149Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Recently, offset contracts have become more complex. For the seller to carry through and review the effects and the demands of an offset contract, they need a framework.The paper identifies five main differences between outsourcing and related offset, which are translated into activities to be included in a suggested related offset framework. The paper is based on an in-depth case study of a related offset business at Saab, a Swedish military aircraft producer. The analysis compared the studied case with an existing outsourcing process identified in literature. The paper contributes by providing an overview of the activities taking place during a related offset process and showing the effect of the different hierarchical levels involved in the process on the efficiency of the fulfilment of the offset business. This paper is based on a single case study, and the suggested differences should be verified through further case studies.

  • 110.
    Fredriksson, Anna
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska fakulteten.
    Malm, Anna
    Saab AB Aeronautics, Linköping, Sweden.
    Skov Madsen, Erik
    SDU Centre for Sustainable Supply Chain Engineering, Institute of Technology and Innovation, Syddansk Universitet, Odense, Denmark.
    Technology transfer as apart of the business: Inter-organizational transfer strategies based on experiences of aircraft production2018Inngår i: Journal of Global Operations and Strategic Sourcing, ISSN 2398-5364Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose

    The purpose of this paper is through a literature study and a study of the Saab offset cases to identify strategies to increase inter-organizational transfer capability.

    Design/Methodology/Approach

    Based on a literature study and a study of three of Saab’s offset cases and Saab’s process for technology transfer.

    Findings

    This study has identified inter-organisational transfer strategies based on the importance of the hierarchy of decision-making and the change from capacity transfers to capability transfers in offset business. 1) The type of performance goals set in the business agreement decides how to realise the transfer. 2) The hierarchy of decision-making create a need to align the understanding of the performance goals between the different parts of the organisation, which affect the plans for how to transfer knowledge between the organizational as well as the individual levels. 3) To reach the performance goals of the technology transfer there need to be a balance between the disseminative capability of the sender and the absorptive capability of the receiver.

    Limitations

    This study is based on a single case within a relatively unique industry with an offset perspective and production transfers. Therefore, there is also a need for future studies to confirm the identified relationships within outsourcing/offset within other industries and other types of transfers.

    Originality/value: A change from capacity transfers to capability transfers in both outsourcing/offshoring and offset business indicates that more research should be placed on the disseminative capacity of the sender. The literature review revealed that the disseminative capacity of the sender has been the subject of less research than the absorptive capacity of the receiver.

  • 111.
    Fredriksson, Anna
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska fakulteten.
    Medbo, Per
    Chalmers Tekniska Högskola.
    Johansson, Mats
    Chalmers Tekniska Högskola.
    Safety stock determination during production transfer2015Inngår i: Proceedings of EurOMA 2015, Neuchatel, Schweiz, 2015Konferansepaper (Fagfellevurdert)
    Abstract [en]

    The purpose is to identify, through a simulation study, how the size of the extra safety stock needed when transferring production vary with uncertainties introduced by the transfer. The study shows that there is a substantial uncertainty increase during production transfer, related to the uncertainty of time to reach steady state. Learning curve factors have the largest impact, while the effects for the production yield factors are about of half their size, but still considerably large in relation to the regular safety stock. The study contributes by structuring the decision problem and indicating the importance of various uncertainties.

  • 112.
    Fredriksson, Anna
    et al.
    Chalmers University of Technology, Gothenburg, Sweden.
    Wänström, Carl
    Chalmers University of Technology, Gothenburg, Sweden.
    Manufacturing and supply chain flexibility – towards a tool to analyse production network coordination at operational level2014Inngår i: Strategic Outsourcing, ISSN 1753-8297, E-ISSN 1753-8300, Vol. 7, nr 2, s. 173-194Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose– The purpose of this paper is to explore how the manufacturing and supply chain flexibility impact on the ability to transfer production between the units, i.e. production network coordination. To take advantage of available opportunities for different actors and locations, companies need to effectively transfer production.

    Design/methodology/approach– The case studied was a transfer of production between The Netherlands and Sweden. The case was selected based on the opportunity it provided to perform a longitudinal study of an ongoing production transfer.

    Findings– Different flexibility dimensions have different importance depending on the receiver or sender. A production transfer can be divided into four parts: knowledge, physical, administrative and supply chain transfer. The manufacturing flexibility have a high impact on the physical and knowledge transfer, the new product development dimension also have a major impact on the administrative transfer in combination with the supply chain flexibility dimension IT. The supply chain transfer was impacted by the supply chain flexibility dimensions except IT.

    Practical implications– The paper presents a first step towards a tool for analysing the strength and weaknesses within units in relation to receiving/sending production. Furthermore, that the production transfer should be viewed as four parts with interdependencies help to identify the order of the transfer process.

    Originality/value– This paper widens the flexibility concept to a network level. Furthermore, it describes the link between the strategic decision of coordination in the network and the operational ability of the network to accomplish this change.

  • 113.
    Frohm, Dan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    The Pricing of Structured Products in Sweden: Empirical findings for Index-linked Notes issued by Swedbank in 20052007Independent thesis Basic level (professional degree), 20 poäng / 30 hpOppgave
    Abstract [en]

    Structured products are investment vehicles that combine basic financial instruments to provide private investors with packaged solutions to more advanced investment strategies in financial markets.

    This paper investigates the pricing of 22 index-linked notes examined during their full life cycles between January 12, 2005 and January 17, 2007. The selected products constitute some 40% of the structured products issued by Swedbank in 2005, which at the time of the study is the second largest issuer of structured products to private investors in Sweden. Quoted prices on secondary markets are compared with duplication strategies using exchange traded options in order to calculate price differences.

    The pricing results show that quoted prices deviate very little from their theoretical values in secondary markets. The price deviations are surprisingly low in an international comparison. Some indications have been found that the market maker is able to influence prices on secondary market by orienting the pricing towards the relative life cycle and moneyness of the structured products.

    The importance of patterns in price deviations can, however, be questioned since the absolute level of pricing errors is low. There is little evidence to suspect that the issuer, Swedbank, systematically quotes prices that are not in line with their theoretical values. Sophisticated investors are thus likely to be able to judge the attractiveness of the structured product issue by comparing the transaction costs of the instruments in a duplication strategy with the transaction costs of the structured product. The author welcomes further research that includes multiple issuers to determine whether these findings apply for the Swedish market as a whole.

  • 114.
    Fuglås, Jonas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Lindgren, Amund
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Logistik- och kvalitetsutveckling.
    Digitalization strategy for Scania Cab Assembly2018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    With changing market demands such as individualization, volatility and sustainability, the current manufacturing environment at Scania is subject to an increasing need for change. This, together with the availability of more advanced technology and digitalization has sparked the fourth industrial revolution. It has been named Industry 4.0 and considers digitalization in a manufacturing environment. As a result, the purpose of this thesis is to outline the potential of increased digitalization for logistics and manufacturing at Scania Oskarshamn. This will be done by developing a digitalization strategy that encapsulates the core of Industry 4.0 and a roadmap to guide Scania in their development towards a future digitalized manufacturing environment. The study will consider two core functions of Industry 4.0 as the cornerstones of digitalization; consciousness and interoperability. Consciousness focuses on the level of digitalization within the system. With interoperability, integration throughout the whole supply chain and how it relates to the manufacturing environment. As a result, the study is separated into three main parts: Scania today, Scania 2030 and the gap in-between. For all three parts, three areas of focus will be the basis for the analysis. First, the level of digitalization will be analyzed. This is done in regards to the first core function, consciousness. Second, the level of process maturity will be analyzed. This is done in regards to the second core function, interoperability. Third, synergies between logistics and manufacturing will be analyzed. From the conducted analysis of the current state at Scania, the 2030 scenario and the gap inbetween, the digitalization strategy for Scania focuses on the two identified functions. Three key steps has been developed for each function.

  • 115.
    Gabela, Asmir
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Automatiserad monteringscell för tillverkning av adapterringar i kompositmaterial2013Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Detta examensarbete är en del av ett forskningsprojekt som är ett samarbete mellan RUAG Space och Linköpings Universitet. RUAG Space är ett företag inom rymdindustrin som tillverkar delar till satelliter och bärraketer. För detta examensarbete kommer enbart adapter - och separationssystemet att beröras. Vid en uppskjutning av satelliter är det viktigt att tänka på att vikten är så låg som möjligt. Därför ville företaget att en ny produkt skulle tas fram genom att använda kompositmaterial. Företaget tar fram komponenten medan examensarbetets fokus är tillverkningen av den.

    Produkten består av kolfiberformade laminatblock som limmas ihop för att skapa ett cirkelbågeformat segment. Eftersom flera block limmas ihop är det en tidskrävande tillverkningsprocess. Därför beslutade företaget att ett koncept för automatiserad monteringscell skulle kunna tas fram. Då examensarbetet är tidsbestämt angås det att ett virtuellt automatiserat monteringskoncept skulle räcka.

    I detta examensarbete har ett stort fokus lagts på konceptgenereringen som har tillämpats för att hitta lämpliga koncept för problemet. Konceptgenereringen delades i tre huvudfunktioner som var robot, fixtur-och limapplicering samt gripdon. Det visade sig att konstruktionen av fixturen som gjordes parallellt med limappliceringen var examensarbetes viktigaste del. Därför lades stor del av examensarbetes tid åt att framta lämplig fixtur - och limningskoncept. För att kunna avgöra vilket fixturkoncept som är mest lämplig användes en konceptvalsmetod.

    När ett fixturkoncept och dess limapplicering hade valts kunde resterande funktioner väljas utifrån fixturenskoncepts geometri och funktion. Det påvisades att en 6 axlar robot var den mest lämpade för monteringscellen medan det mest lämpade gripdonet var klämmande. Efter att alla huvudfunktioner hade valts kunde en processlayout tas fram som sedan användes som stöd vid programmering av roboten. Geometrisimuleringen består av att roboten hämtar blocken som sedan går igenom olika mellanliggande stationer innan det placeras i fixturkonceptet. Processen avslutas med en liminjicering i fixturen.

    Det har visat sig att det lättaste sättet att utforma ett segment har varit genom att fixturkonceptet har en cirkelbågeformad geometri. Den slutgiltiga geometrisimuleringen visade att det går att automatisera monteringscellen.

  • 116.
    Gomolka, Beth
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik.
    Service Offering Uncertainty Analysis Tool2009Independent thesis Advanced level (degree of Master (Two Years)), 30 poäng / 45 hpOppgave
    Abstract [en]

    Companies that seek to venture into providing services in addition to providing products have many business issues to consider as there are many differences between providing service and product offerings.  One factor that needs to be considered in service offerings is the aspect of time, as services are offered for an extended period of time, creating a unique type of relationship between the customer and the service provider.  With product offerings, the point of sale is usually the end of the product provider and customer relationship.  The added time aspect in the service offering brings with it the issues of uncertainty as service contracts are made for a certain period of time in the future, where things are unknown.

     

    This thesis looked at types of uncertainties important to service offerings, especially in the manufacturing industry.  The uncertainties have an impact on how service offering contracts are constructed, as they can affect the profit and costs of the service provider. The three types of uncertainties that were examined were product malfunction uncertainty, service delivery uncertainty, and customer requirement uncertainty. Using these three types of uncertainty, mathematical models were constructed to represent the cost and revenue of different contract types. The different contract types were identified through a case study with a product manufacturer in Sweden.  Different probability distributions were selected to model the three types of uncertainty based on a literature review.  The mathematical models were then used to construct a software program, the uncertainty simulator tool, which service contract designers can use to model how uncertainties affect cost and revenue in their contracts.

  • 117.
    Gopinath, Varun
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    On Safe Collaborative Assembly With Large Industrial Robots2019Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This thesis pertains to industrial safety in relation to human-robot collaboration. The aim is to enhance understanding of the nature of systems where large industrial robots collaborate with humans to complete assembly tasks. This understanding may support development and safe operations of future collaborative systems.

    Industrial robots are widely used to automate manufacturing operations across several industries. The automotive industry is the largest user of robots and have identified robot-based automation as a strategy to improve efficiency in manufacturing operations.

    Recently, a class of machines referred to as collaborative robots have been developed by robot manufacturers to support operators in assembly tasks. The use of these robots to support human workers in an industrial context are referred to as collaborative operations.

    Presently, collaborative robots have limited reach and load carrying capacity compared to standard industrial robots. Large/standard industrial robots are widely used for applications such as welding or painting. They can, in principle support operators in assembly tasks as well.

    Two laboratory demonstrators representing the final results from a series of research activities will be presented. They were developed to investigate issues related to personnel and process safety while working with large industrial robots in collaborative operations. The demonstrators were partially based on assembly workstations that are currently operational and they exemplify challenges faced by the automotive industry.

    Demonstrator-based Research, a methodology for collaborative research that emphasizes development of demonstrators as a research tool, forms the rationale for carrying out research operations presented in this thesis. An evaluation of the laboratory demonstrators by industrial participants suggests an increased interest and confidence in collaborative operations with large robots. The demonstrators have served as a tentative platform for participants to identify and discuss manufacturing and safety challenges in relation to their organization.

    A main outcome presented in this thesis relates to specifying requirements for introducing robots in a human-populated environment. Introducing robotic systems in new environments requires reconsideration of the nature of the hazards particular to the domain. An analysis of the laboratory demonstrators suggest that, in addition to hazards associated with normal functioning of the system, limitations in human cognition must be considered. These results will be exemplified and discussed in the context of situational and mode awareness. Additionally, a model of a collaborative workstation will be presented in terms of three constituents – workspace, tasks and interaction.

    This is particularly significant considering the direction of present-day research aimed at introducing robots across various industries and working environments. In response to this trend, this thesis discusses the relevance of Interactive Research and its emphasis on joint learning that goes on between academic researchers and industrial participants as a valuable principle for collaborative research.

    Delarbeid
    1. Design Criteria for a Conceptual End-effector for Physical Human-Robot Production Cell
    Åpne denne publikasjonen i ny fane eller vindu >>Design Criteria for a Conceptual End-effector for Physical Human-Robot Production Cell
    2014 (engelsk)Inngår i: Proceedings of The 6th International Swedish Production Symposium 2014, Gothenburg: Chalmers Conferences , 2014, s. 1-7Konferansepaper, Publicerat paper (Fagfellevurdert)
    Abstract [en]

    Speed, precision and repeatability are virtues of industrial robots which are relied on by manufacturing firms but also necessitates segregating them within controlled fenced areas. Therefore, industrial robots cannot cooperate with line workers in assembling task. With recent developments in robotics, new possibilities have emerged that can enable manufacturing firms to be flexible and cost effective. This paper presents preliminary results from investigations into the possibility of a man-machine production cell where plastic panels are assembled under the car. A conceptual man-machine collaborative production cell will be presented detailing characteristics required to ensure safety.

    sted, utgiver, år, opplag, sider
    Gothenburg: Chalmers Conferences, 2014
    Emneord
    Human-Robot Collaboration, Mixed-model assembly Line, Flexible Manufacturing.
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-123649 (URN)9789198097412 (ISBN)
    Konferanse
    The 6th Swedish Production Symposium, Clarion Hotel Post September 16-18, Gothenburg, Sweden
    Prosjekter
    Collaborative Team of Man and Machine ToMM
    Forskningsfinansiär
    Vinnova
    Tilgjengelig fra: 2016-01-04 Laget: 2016-01-04 Sist oppdatert: 2019-11-20bibliografisk kontrollert
    2. Risk Assessment Process for Collaborative Assembly - A Job Safety Analysis Approach
    Åpne denne publikasjonen i ny fane eller vindu >>Risk Assessment Process for Collaborative Assembly - A Job Safety Analysis Approach
    2016 (engelsk)Inngår i: 6TH CIRP CONFERENCE ON ASSEMBLY TECHNOLOGIES AND SYSTEMS (CATS), ELSEVIER SCIENCE BV , 2016, Vol. 44, s. 199-203Konferansepaper, Publicerat paper (Fagfellevurdert)
    Abstract [en]

    International safety standards state that risk assessment is the first step in understanding and eliminating hazardous work environment. The traditional method of risk assessment using Job Safety Analysis, where sequential tasks of the operator are analysed for potential risks, needs to be adapted to applications where humans and robots collaborate to complete assembly tasks. This article proposes a novel approach by placing equal emphasis on various participants working within their workspaces. An industrial case study wil be used to showcase the merits of the process when used at an early stage in the development of a collaborative assembly cell. (C) 2016 The Authors. Published by Elsevier B.V.

    sted, utgiver, år, opplag, sider
    ELSEVIER SCIENCE BV, 2016
    Serie
    Procedia CIRP, ISSN 2212-8271
    Emneord
    Human Robot Collaboration; Risk Assessment; Safety Standards; Collaborative Assembly
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-129505 (URN)10.1016/j.procir.2016.02.334 (DOI)000376432200033 ()
    Konferanse
    6th CIRP Conference on Assembly Technologies and Systems (CATS)
    Tilgjengelig fra: 2016-06-20 Laget: 2016-06-20 Sist oppdatert: 2019-11-20
    3. Safe Assembly Cell Layout through Risk Assessment: An Application with Hand Guided Industrial Robot
    Åpne denne publikasjonen i ny fane eller vindu >>Safe Assembly Cell Layout through Risk Assessment: An Application with Hand Guided Industrial Robot
    2017 (engelsk)Inngår i: Proceedings of the 50th CIRP Conference on Manufacturing Systems / [ed] Mitchell M. Tseng, Hung-Yin Tsai and Yue Wang, Elsevier, 2017, Vol. 63, nr Supplement C, s. 430-435Konferansepaper, Publicerat paper (Fagfellevurdert)
    Abstract [en]

    Risk assessment is a systematic and iterative process which involves risk analysis where the probable hazards are identified and corresponding risks are evaluated along with solutions to mitigate the effect of these risks. In this article the outcome of a risk assessment process will be detailed where a large industrial robot is being used as a intelligent and flexible lifting tool that can aid operators in assembly tasks. The realization of a collaborative assembly station has several benefits such as increased productivity and improved ergonomic work environment. The article will detail the design of the layout of a collaborative assembly cell which takes into account the safety and productivity concerns of automotive assembly plants.

    sted, utgiver, år, opplag, sider
    Elsevier, 2017
    Serie
    Procedia CIRP
    Emneord
    Human Robot Collaboration, Safety Standards, Collaborative Assembly, Hand-Guided Robot
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-142319 (URN)10.1016/j.procir.2017.03.160 (DOI)000418465500073 ()2-s2.0-85028677171 (Scopus ID)
    Konferanse
    Manufacturing Systems 4.0 – Proceedings of the 50th CIRP Conference on Manufacturing Systems
    Forskningsfinansiär
    VINNOVA
    Merknad

    Manufacturing Systems 4.0 – Proceedings of the 50th CIRP Conference on Manufacturing Systems

    Tilgjengelig fra: 2017-10-25 Laget: 2017-10-25 Sist oppdatert: 2019-11-20bibliografisk kontrollert
    4. Risk Assessment for Collaborative Operation: A Case Study on Hand-Guided Industrial Robots
    Åpne denne publikasjonen i ny fane eller vindu >>Risk Assessment for Collaborative Operation: A Case Study on Hand-Guided Industrial Robots
    2018 (engelsk)Inngår i: Risk Assessment / [ed] Valentina Svalova, London/Rijeka: InTech, 2018, s. 167-187Kapittel i bok, del av antologi (Fagfellevurdert)
    Abstract [en]

    Risk assessment is a systematic and iterative process, which involves risk analysis, where probable hazards are identified, and then corresponding risks are evaluated along with solutions to mitigate the effect of these risks. In this article, the outcome of a risk assessment process will be detailed, where a large industrial robot is used as an intelligent and flexible lifting tool that can aid operators in assembly tasks. The realization of a collaborative assembly station has several benefits, such as increased productivity and improved ergonomic work environment. The article will detail the design of the layout of a collaborative assembly workstation, which takes into account the safety and productivity concerns of automotive assembly plants. The hazards associated with hand-guided collaborative operations will also be presented.

    sted, utgiver, år, opplag, sider
    London/Rijeka: InTech, 2018
    Emneord
    Hand-guided robots, industrial system safety, collaborative operations, human-robot collaboration, risk assessment, hazards
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-145504 (URN)10.5772/intechopen.70607 (DOI)9789535137986 (ISBN)9789535140634 (ISBN)9789535137993 (ISBN)
    Tilgjengelig fra: 2018-03-02 Laget: 2018-03-02 Sist oppdatert: 2019-11-20bibliografisk kontrollert
    5. Demonstrators to support research in Industrial safety - A Methodology
    Åpne denne publikasjonen i ny fane eller vindu >>Demonstrators to support research in Industrial safety - A Methodology
    2018 (engelsk)Inngår i: Procedia Manufacturing, E-ISSN 2351-9789, Vol. 17, s. 246-253Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Activities to support manufacturing research are carried out with the intention to gain knowledge of industrial problems and provide solutions that addresses these issues. In order for solution to be viable to the industry, research activities are carried out in close collaboration with participants from the industry, academia and research institutions. Interactive research approach motivates participants with multi-disciplinary perspective to collaborate and emphasizes joint learning in the change process. This article, presents a methodology, where participants with different expertise can collaborate to develop safety solutions. The concept of a demonstrator, which represents cumulative result of a series of research activities, is presented as a tool to showcase functioning and design intent in a collaborative research environment. The results of a pilot study, where manufacturing professionals evaluated design decisions that resulted in a demonstrator, will be presented. (C) 2018 The Authors. Published by Elsevier B.V.

    sted, utgiver, år, opplag, sider
    ELSEVIER SCIENCE BV, 2018
    Emneord
    Collaborative robots; Industrial Safety; University-Industry Collaboration; Risk Assessment
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-158894 (URN)10.1016/j.promfg.2018.10.043 (DOI)000471035200031 ()
    Konferanse
    28th International Conference on Flexible Automation and Intelligent Manufacturing (FAIM2018), June 11-14, 2018, Columbus, OH, USAGlobal Integration of Intelligent Manufacturing and Smart Industry for Good of Humanity, Edited by Dušan Šormaz, Gürsel Süer, F. Frank Chen
    Merknad

    This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/)Peer-review under responsibility of the scientific committee of the 28th Flexible Automation and Intelligent Manufacturing(FAIM2018) Conference.

    Tilgjengelig fra: 2019-07-16 Laget: 2019-07-16 Sist oppdatert: 2019-11-20
    6. Understanding situational and mode awareness for safe human‑robot collaboration: case studies on assembly applications
    Åpne denne publikasjonen i ny fane eller vindu >>Understanding situational and mode awareness for safe human‑robot collaboration: case studies on assembly applications
    2019 (engelsk)Inngår i: Production Engineering, ISSN 0944-6524, E-ISSN 1863-7353, Vol. 13, nr 1, s. 1-9Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    In order for humans and robots to collaborate on an assembly line, safety of operations is a prerequisite. In this article, two assembly stations where a large industrial robots collaborate with humans will be analysed with the aim to 1. determine the characteristics of hazards associated with human-robot interaction and 2. design solutions that can mitigate risks associated with these hazards. To support the aim of this article, a literature review will attempt to characterize automation and detail the problems associated with human-automation interaction. The analysis points at situational awareness and mode-awareness as contributing factors to operator and process safety. These underlying mechanisms, if recognised by the risk assessment team as hazards, can mitigate risks of operator injury or production delays. This article details the function of visual and physical interfaces that allow operators to comprehend system-state in order to avoid undesirable situations

    sted, utgiver, år, opplag, sider
    Springer Berlin/Heidelberg, 2019
    Emneord
    Situational awareness, Mode awareness, Human-robot collaboration (HRC), Industrial safety
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-160304 (URN)10.1007/s11740-018-0868-2 (DOI)000457944600001 ()2-s2.0-85058656783 (Scopus ID)
    Forskningsfinansiär
    Vinnova, 2015-03722
    Tilgjengelig fra: 2019-09-17 Laget: 2019-09-17 Sist oppdatert: 2019-11-20bibliografisk kontrollert
  • 118.
    Gopinath, Varun
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Risk Assessment Process for Collaborative Assembly - A Job Safety Analysis Approach2016Inngår i: 6TH CIRP CONFERENCE ON ASSEMBLY TECHNOLOGIES AND SYSTEMS (CATS), ELSEVIER SCIENCE BV , 2016, Vol. 44, s. 199-203Konferansepaper (Fagfellevurdert)
    Abstract [en]

    International safety standards state that risk assessment is the first step in understanding and eliminating hazardous work environment. The traditional method of risk assessment using Job Safety Analysis, where sequential tasks of the operator are analysed for potential risks, needs to be adapted to applications where humans and robots collaborate to complete assembly tasks. This article proposes a novel approach by placing equal emphasis on various participants working within their workspaces. An industrial case study wil be used to showcase the merits of the process when used at an early stage in the development of a collaborative assembly cell. (C) 2016 The Authors. Published by Elsevier B.V.

  • 119.
    Gopinath, Varun
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Understanding situational and mode awareness for safe human‑robot collaboration: case studies on assembly applications2019Inngår i: Production Engineering, ISSN 0944-6524, E-ISSN 1863-7353, Vol. 13, nr 1, s. 1-9Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In order for humans and robots to collaborate on an assembly line, safety of operations is a prerequisite. In this article, two assembly stations where a large industrial robots collaborate with humans will be analysed with the aim to 1. determine the characteristics of hazards associated with human-robot interaction and 2. design solutions that can mitigate risks associated with these hazards. To support the aim of this article, a literature review will attempt to characterize automation and detail the problems associated with human-automation interaction. The analysis points at situational awareness and mode-awareness as contributing factors to operator and process safety. These underlying mechanisms, if recognised by the risk assessment team as hazards, can mitigate risks of operator injury or production delays. This article details the function of visual and physical interfaces that allow operators to comprehend system-state in order to avoid undesirable situations

  • 120.
    Gopinath, Varun
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Derelöv, Micael
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Demonstrators to support research in Industrial safety - A Methodology2018Inngår i: Procedia Manufacturing, E-ISSN 2351-9789, Vol. 17, s. 246-253Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Activities to support manufacturing research are carried out with the intention to gain knowledge of industrial problems and provide solutions that addresses these issues. In order for solution to be viable to the industry, research activities are carried out in close collaboration with participants from the industry, academia and research institutions. Interactive research approach motivates participants with multi-disciplinary perspective to collaborate and emphasizes joint learning in the change process. This article, presents a methodology, where participants with different expertise can collaborate to develop safety solutions. The concept of a demonstrator, which represents cumulative result of a series of research activities, is presented as a tool to showcase functioning and design intent in a collaborative research environment. The results of a pilot study, where manufacturing professionals evaluated design decisions that resulted in a demonstrator, will be presented. (C) 2018 The Authors. Published by Elsevier B.V.

  • 121.
    Gopinath, Varun
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Gustafsson, Ake
    Volvo Car Corp, Sweden.
    Axelsson, Stefan
    Volvo Car Corp, Sweden.
    Collaborative Assembly on a Continuously Moving Line - An Automotive Case Study2018Inngår i: 28TH INTERNATIONAL CONFERENCE ON FLEXIBLE AUTOMATION AND INTELLIGENT MANUFACTURING (FAIM2018): GLOBAL INTEGRATION OF INTELLIGENT MANUFACTURING AND SMART INDUSTRY FOR GOOD OF HUMANITY, ELSEVIER SCIENCE BV , 2018, Vol. 17, s. 985-992Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Collaborative operation is a state in which a purposely designed robot system and an operator work within a collaborative workspace. To ensure a safe working environment, safety standards suggest conducting a task-based risk assessment followed by risk reduction to reduce the risks to an acceptable level. In this article, an automotive case study will be used to understand safety issues associated with collaborative operations with large industrial robots. Based on this case study, a layout of the collaborative workstation, in terms of workspaces and tasks, which is the outcome of a risk assessment program will be presented. The first critical step in risk assessment is hazard identification, which can allow the risk assessing team to evaluate the hazards and suggest measures to mitigate the risks. Therefore, the hazards identified during the risk assessment program will also be detailed along with measures to mitigate the risks and is expected to complement our understanding of the nature of hazards associated with collaborative operations with large industrial robots. (C) 2018 The Authors. Published by Elsevier B.V.

  • 122.
    Gopinath, Varun
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Gustafsson, Åke
    Core Manufacturing Engineer, Volvo Car Coopeation,Göteborg, Sweden.
    Design Criteria for a Conceptual End-effector for Physical Human-Robot Production Cell2014Inngår i: Proceedings of The 6th International Swedish Production Symposium 2014, Gothenburg: Chalmers Conferences , 2014, s. 1-7Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Speed, precision and repeatability are virtues of industrial robots which are relied on by manufacturing firms but also necessitates segregating them within controlled fenced areas. Therefore, industrial robots cannot cooperate with line workers in assembling task. With recent developments in robotics, new possibilities have emerged that can enable manufacturing firms to be flexible and cost effective. This paper presents preliminary results from investigations into the possibility of a man-machine production cell where plastic panels are assembled under the car. A conceptual man-machine collaborative production cell will be presented detailing characteristics required to ensure safety.

  • 123.
    Gopinath, Varun
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Ore, Fredrick
    Global Industrial Development, Scania CV AB, Södertälje, Sweden; Mälardalen University, School of Innovation, Design and Engineering, Eskilstuna, Sweden.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Safe Assembly Cell Layout through Risk Assessment: An Application with Hand Guided Industrial Robot2017Inngår i: Proceedings of the 50th CIRP Conference on Manufacturing Systems / [ed] Mitchell M. Tseng, Hung-Yin Tsai and Yue Wang, Elsevier, 2017, Vol. 63, nr Supplement C, s. 430-435Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Risk assessment is a systematic and iterative process which involves risk analysis where the probable hazards are identified and corresponding risks are evaluated along with solutions to mitigate the effect of these risks. In this article the outcome of a risk assessment process will be detailed where a large industrial robot is being used as a intelligent and flexible lifting tool that can aid operators in assembly tasks. The realization of a collaborative assembly station has several benefits such as increased productivity and improved ergonomic work environment. The article will detail the design of the layout of a collaborative assembly cell which takes into account the safety and productivity concerns of automotive assembly plants.

  • 124.
    Govers, Emma
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Kreativa Produkter: En jämförelse mellan teori och praktik2008Independent thesis Advanced level (degree of Magister), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Syftet med arbetet är att skapa en bättre förståelse för vad kreativitet och kreativa produkter är. I arbetet utvärderas även en metod för bedömning av kreativiteten i en produkt. Den metod som utvärderas är Creative Product Semantic Scale (CPSS). Det finns många olika definitioner på kreativitet och några tas upp i det här arbetet. För att kreativitet skall uppstå är även omgivningen och kontexten viktig. Kreativ verksamhet resulterar ofta i en produkt och det kan därför vara bra att kunna bedöma kreativiteten i en produkt. Det finns olika krav som kan ställas på en kreativ produkt. Ett krav som alltid måste vara uppfyllt är kravet på nyhet, andra krav som kan ställas är krav på användbarhet och komplexitet. Arbetet inleddes med sökningar i artikeldatabaser för att hitta fakta om kreativa produkter samt metoder för att avgöra om en produkt är kreativ. Därefter formulerades enkätfrågor och en pilotstudie utfördes med sex deltagare för att se hur enkäten fungerade. Efter vissa justeringar delades enkäten ut till 40 studenter. I enkätundersökningen ombads respondenterna att besvara tre öppna frågor, göra fria bedömningar av fyra produkter med avseende på attributen kreativitet, originalitet, användbarhet, komplexitet samt attraktivitet och välformighet. Dessutom användes metoden Creative Product Semantic Scale för att bedöma kreativiteten i de fyra produkterna. Respondenternas svar på de tre fria frågorna stämde ganska väl med teorin men de nämnde mycket lite om omgivningen och kontexten. En jämförelse mellan respondenternas fria bedömning och bedömningen med hjälp av CPSS gjordes och visade på vissa brister i metoden. Metoden Creative Product Semantic Scale tar ingen hänsyn till vilka av kraven på den kreativa produkten som är uppfyllda. Detta medför att en produkt som inte uppfyller kravet på nyhet ändå kan få ett ganska högt kreativitetsbetyg. Metoden är därför inte helt pålitlig eftersom en produkt som inte uppfyller nyhetskravet inte kan anses kreativ.

  • 125.
    Grahn, Sten
    et al.
    Swerea IVF AB, Sweden; Mälardalen University (MDH), Sweden.
    Gopinath, Varun
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Wang, Xi, Vincent
    KTH, Royal Institute of Technology, Stockholm 11428, Sweden.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Exploring a Model for Production System Design to Utilize Large Robots in Human-Robot Collaborative Assembly Cells2018Inngår i: Procedia Manufacturing, E-ISSN 2351-9789, Vol. 25, s. 8s. 612-619Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    It has been shown that large robots can be safely installed for human-robot collaborative assembly cells in experimental setups. It has also been found that these installations require demanding considerations of a significant number of layout and safety parameters. This indicates that successful commercial implementations will require a resource efficient model for production system design that anticipates utilization of large robots in collaborative settings. Experiences from experimental setups have been used to explore a basic model for such production system design, to stimulate a discussion regarding what model characteristics should be tested and validated in future research.

  • 126.
    Granasen, Dennis
    Linköpings universitet, Institutionen för datavetenskap. Linköpings universitet, Tekniska fakulteten. Swedish Def Res Agcy, Sweden.
    Towards automated assessment of team performance by mimicking expert observers ratings2019Inngår i: Cognition, Technology & Work, ISSN 1435-5558, E-ISSN 1435-5566, Vol. 21, nr 2, s. 253-274Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Automation is the holy grail of performance assessment. Cheap and reliable automated systems that produce consistent feedback on performance. Many such systems have been proposed that accurately measure the state of a product or the outcome of a process. Procedural faults can be detected and even mitigated without the need for human interference. In production industry and professional sports, this is a natural part of business. However, in macrocognitive team performance studies, human appraisal is still king. This study investigates the reliability of human observers as assessors of performance among virtual teams, and what they base their assessments on when only able to monitor one of the team members at a time. The results show that expert observers put a lot of emphasis on task outcomes and on communication and are generally reliable raters of team performance, but there are several aspects that they cannot rate reliably under these circumstances, e.g., team workload, stress, and collaborative problem-solving. Through simple algorithms, this study shows that by capturing task scores and different quantitative communication metrics, team performance ratings can be estimated to closely match how the expert observers assess team performance in a virtual team setting. The implication of the study is that numeric team performance estimations can be acquired by automated systems, with reasonable accuracy and reliability compared to observer ratings.

  • 127.
    Granath, Jon
    et al.
    Uppsala Universitet - STS.
    Svedlund, Björn
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi.
    Wiberg, Malin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi.
    Scanias Produktionssystem - inte bara för produktion: En implementering av Scanias Produktionssystem inom teknikorganisationen vid Scania Chassi2009Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    This report is the result of a master thesis at Linköping University - Institute of Technology and Uppsala University at the request of the chassi workshop at Scania CV AB in Södertälje. Since the beginning of the 90's, Scania CV AB has had a close cooperation with Toyota from which, among other things, the Scania Production System (SPS) has evolved. SPS explains Scanias' values, principles and priorities. The Technician department (MST) at Scania Chassi in Södertälje believes that SPS can streamline the technicians work and help them become a more homogeneous group.

     

    The purpose of this master thesis is to initiate an implementation of SPS within MST through two pilot projects involving both the product and process technicians. The SPS principle Normal Situation - Standardised working method was required to be implemented within one work task each for the two groups of technicians with special attention on the three subprinciples Standardisation, Takt and Balanced flow.

     

    The master thesis fulfilled its purpose as the two pilot projects initiated the implementation of SPS within MST and the three sub-principles Standardisation, Takt and Balanced flow were implemented within the two chosen work tasks. An improvement of the new work procedure for the work tasks was also noted.

     

    Following the completion of the thesis, it could be established that SPS can be implemented on almost all of the technicians work tasks, and therefore the chances are good for continuous implementations of SPS within MST.

     

  • 128.
    Granath, Liselott
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik.
    Montering av isolering på vattentank2006Independent thesis Basic level (degree of Bachelor), 10 poäng / 15 hpOppgave
    Abstract [en]

    One of today problem at IVT industries would be assembly of insulation on water cisterns. The element of assembly insulation on the cistern gets too elevated; hence one has to climb onto the stand the cistern is assembly on. This will increase the risk of work related injuries when there is a risk of falling down. It’s also rather strenuous on shoulders due to work with your arms high above your head. Further, it’s very difficult to get the insulation in place, this force us to compress the roof of the insulation with the sides of the insulation, which is very strenuous on the body. The purpose of this degree project has been to develop a work method with improved work position and improved workflow through the premises.

    This paper is divided into: Problem review, theoretic solutions, evaluation of solutions and design of tools. Each proposal to each solution is motivated with pros and cons. Then the best-fitted solution for IVT industries is presented.

    After examination of different solutions, I’ve concluded the best solution is to have separated assembly station for insulation that is preceded by assembly of cistern to it’s under part. Through the use of a personnel lifter assembly of insulation can be done without climbing on assembly stand. The body gets an improved work position because you no longer need to work with your arms up high. This is the solution that I’m recommending to IVT industries AB. Through elevating the assembly stations and move both test stations and refill of coolant to the right wall, an increased flow through the premises will be achieved.

  • 129.
    Granman, Tobias
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Kvalitetsteknik. Linköpings universitet, Tekniska högskolan.
    Helgosson, Magnus
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Kvalitetsteknik. Linköpings universitet, Tekniska högskolan.
    Succeeding in Supplier Development: A Qualitative Case Study of Scania CV AB Suppliers2013Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Purpose

    To investigate under which conditions SCD’s work with implementing a lean mindset and behaviour at key suppliers is successful. To help fulfilling the purpose this thesis aims to answer the question:

    What affects how the production unit of a Scania key supplier adopts a lean mindset and behaviour with focus on continuous improvements?

    Methodology

    An exploratory multiple case study with a qualitative data analysis and inductive approach. The cases consist of five Swedish first-tier suppliers to Scania CV AB, and a pilot case study conducted at Scania, Södertälje.

    Result

    The case study resulted in a categorisation of suppliers into three groups based on their characteristics and ability to adopt a lean mindset and behaviour:

    Group I:  Lack of direction, inconsistent management culture, no deeper understanding or interest in lean, no involvement or responsibility of operators in improvement work, a tendency to copy tools and methods given by external help directly into the organisation.

    Group II:  Strong sense of direction, strong management culture, a personal interest in lean and improvements, an “us and them” culture between managers and operators, and a strong sense to develop tools and working methods in-house and be very restrictive with applying external thoughts in the organisation.

    Group III: Clear long-term direction; primarily evident among managers, clear targets on an operational level to guide the rest of the organisation, a supportive management culture, an expectation on operators to perform improvement work, and openness to external help but a strong sense of filtering and adapting to the own organisation.

    Conclusion

    Our conclusion is that SCD is variously successful due to that the same approach has been used despite different needs of the suppliers. The recommendation is to analyse suppliers with tools provided in this research and adapt the development approach to specific supplier needs:

    Group I: No prioritisation of long-term development of this group.

    Group II: Provide guiding from experience to management team, focus workshop on operators and their nearest contact points.

    Group III: Provide possible solutions to specific problems.

  • 130.
    Granåsen, Magdalena
    et al.
    Division for Information- and Aeronautical Systems, Swedish Defense Research Agency, Linköping, Sweden.
    Andersson, Dennis
    Division for Information- and Aeronautical Systems, Swedish Defense Research Agency, Linköping, Sweden.
    Measuring team effectiveness in cyber-defense exercises: A cross-disciplinary case study2016Inngår i: Cognition, Technology & Work, ISSN 1435-5558, E-ISSN 1435-5566, Vol. 18, nr 1, s. 121-143Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In 2010, IT-security experts from northern European governments and organizations gathered to conduct the first of a series of NATO-led cyber-defense exercises in a pilot attempt of training cyber defense. To gain knowledge on how to assess team effectiveness in cyber-defense exercises, this case study investigates the role of behavioral assessment techniques as a complement to task-based performance measurement. The collected data resulted in a massive data set including system logs, observer reports, and surveys. Six different methods were compared for feasibility in assessing the teams’ performance, including automated availability check, exploratory sequential data analysis, and network intrusion detection system attack analysis. In addition, observer reports and surveys were used to collect aspects relating to team structures and processes, aiming to discover whether these aspects can explain differences in effectiveness. The crossdisciplinary approach and multiple metrics create possibilities to study not only the performance-related outcome of the exercise, but also why this result is obtained. The main conclusions found are (1) a combination of technical performance measurements and behavioral assessment techniques are needed to assess team effectiveness, and (2) cyber situation awareness is required not only for the defending teams, but also for the observers and the game control.

  • 131.
    Grubbström, Robert W.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi. Linköpings universitet, Tekniska högskolan.
    The Newsboy problem when customer demand is a compound renewal process2010Inngår i: European Journal of Operational Research, ISSN 0377-2217, E-ISSN 1872-6860, Vol. 203, nr 1, s. 134-142Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The Newsboy (Newsvendor) problem is probably the simplest of all stochastic inventory problems, involving a one-time purchase decision and a stochastic sales outcome. As an investment, it can be interpreted as the simplest stochastic version of the point-in, point-out investment problem of Jevons [Jevons, W.S., Theory of Political Economy, Macmillan, London 1871].

    This paper provides a compound variation of the Newsboy problem. Instead of demand simply being known as to its distribution, here demand is generated by customers arriving at different points in time requiring amounts of varying size. Arrivals follow a renewal process, and amounts required are each taken from a second independent distribution.

    It is shown how the optimal purchase quantity in explicit form depends on properties of the two distributions, maximising the expected net present value (NPV) of the payments involved. The solution to the compound problem will be the solution to the classical problem, if designing a special distribution for the demand process.

    The developments make use of the relation between the NPV and the Laplace transform, simultaneously using the Laplace transform as a moment-generating function.

  • 132.
    Gunnarsson, Linus
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Monteringsteknik.
    Bitar, Nadim
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Monteringsteknik.
    Assembly Analysis - Fixed Leading Edge for Airbus A3202010Independent thesis Basic level (university diploma), 10 poäng / 15 hpOppgave
    Abstract [en]

    The objective with this thesis project was to with the simulations software Delmia make a working build philosophy for the new concept of the fixed leading edge for the Airbus A320 airliner, but also to make two conceptual fixtures in the modular framework BoxJoint for pre-drilling of two sub assemblies.

     

    Everything started with a study in Delmia to both recap on previous knowledge and to learn more about it. This was followed by early simulations on the new concepts that were provided by project partners. Then a study was made in the Affordable Reconfigurable tooling, ART-concept. A suggested build philosophy was created and possible areas for automation were identified. These areas were all the drilling and fettling operations except the drilling in the last stage where the pre-drilled holes are opened up. More investigations needs to be done to see if a robot can install and remove slave pins that are used in the last stage. Two conceptual designs on fixtures were created where one uses two industrial robots with vision systems to get the correct accuracy when drilling the product. The other was build to be able to use a Tau-Gantry robot solution together with a vision system.

  • 133.
    Gustafsson, Carolina
    et al.
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik.
    Mekic, Slavisa
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik.
    Flexibel mätcell inom flygplansmontering2005Oppgave
    Abstract [sv]

    Saab Aerostructures i Linköping utvecklar och tillverkar flygplansstrukturer. Innan dessa levereras till kund ska de verifieras genom en slutkontroll och vid tiden för denna studie utförs slutkontrollen bland annat i kontrolljiggar. Dessa kontrolljiggar är produkt-specifika och mycket kostsamma att tillverka och underhålla.

    Denna studie behandlar möjligheterna med att införa en mätcell, med tillhörande mät-system, istället för att använda kontrolljiggar för att utföra slutkontrollen. Vid detta införande skulle flera vinster kunna göras. En uppskattning har gjorts av vad det skulle kosta att använda sig av kontrolljiggar i två kommande projekt på företaget och detta har sedan satts i relation till kostnaderna med att investera i ett mätsystem. Vid en sådan investering kan flera intäkter väntas, men dessvärre har dessa övriga intäkter inte kunnat värderats i denna studie. Bland dessa intäkter kan nämnas att fler produkter skulle bli godkända direkt och produktionen underlättas, genom att produktens hela tolerans kan utnyttjas. Med de undersökta mätsystemen kan flexibilitet och mobilitet erhållas till skillnad mot användning av de produktspecifika och fasta kontrolljiggarna. Kontroll- och analysarbetet skulle minska och många förtjänster fås då all mätdata behandlas i datormiljö.

    Vid en eventuell investering i ett nytt mätsystem, rekommenderas en lasertracker med T-Scan från Leica Geosystems. Detta gäller om investeringen kan visas vara lönsam med övriga intäkter inräknade. En beräkning har gjorts som visar att om de övriga intäkterna årligen uppgår till 300 000 SEK, är investeringen återbetald efter tre år.

  • 134.
    Hadera, Hubert
    et al.
    Technical University of Dortmund, Germany.
    Wide, Per
    Linköpings universitet.
    Harjunkoski, Iiro
    ABB Corporate Research, Germany.
    Mäntysaari, Juha
    ABB Oy Industry Solutions, Finland.
    Ekström, Joakim
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska fakulteten.
    Sand, Guido
    ABB Corporate Research, Germany.
    Engell, Sebastian
    Technical University of Dortmund, Germany.
    A Mean Value Cross Decomposition Strategy for Demand-side Management of a Pulping Process2015Inngår i: 2th International Symposium on Process Systems Engineering and 25th European Symposium on Computer Aided Process Engineering / [ed] Krist V. Gernaey; Jakob K. Huusom; Rafiqul Gani, Elsevier , 2015, Vol. 37, s. 1931-1936Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Energy is becoming a critical resource for process industries as introduction of new policies drive changes in the energy supply systems. Energy availability and pricing is much more volatile. In this study, we propose a Mean Value Cross Decomposition approach to functionally separate production scheduling from energy-cost optimization. Such a decomposition makes it possible to exploit existing optimization solutions avoiding a need to create a new monolithic model. The proposed framework is applied to a continuous process of thermo-mechanical pulping using a discrete-time Resource-Task Network model. Example case study scenarios show that the approach gives optimal system-wide solutions while keeping the models separated.

  • 135.
    Hallberg, Henrik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    I.T.R.I.P. Intelligent TrafikRegels och InformationsProgram: Ett säkerhetskoncept2007Independent thesis Advanced level (degree of Magister), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Varje år dör det cirka 500 personer i den svenska trafiken. En strävan att sänka detta olyckstal är uttalat av den svenska regeringen och som effekt av detta har nollvisionen vuxit fram. De allvarliga olyckorna på de svenska vägarna har minskat tack vara kontinuerliga förbättringar av säkerhet i och kring fordon, men på grund av ökad trafikintensitet börjar antalet dödade i trafiken stagnera vid 500 personer per år. För hög fart på dåligt utformade vägsträckor är en bidragande faktor till varför en olycka inträffar och vilka konsekvenser denna olycka resulterar i. I dagens trafiksamhälle tenderar förare att negligera små hastighetsöverträdelser. Tanken med detta examensarbete är att undersöka om ett, för detta arbete framtaget informationssystem, kan få förare mer uppmärksamma på sin hastighet i förhållande till laglig hastighet och därmed eventuellt sänka sin hastighet till laglig nivå

    De praktiska testerna genomfördes i hos Avdelningen för Industriell Arbetsvetenskap vid Linköpings Universitet. De simulatortester som genomfördes utfördes av totalt 16 personer som vardera körde tre likadana scenarier med varierande informationsmängd angående gällande laglig hastighet. Försöken jämfördes med varandra och slutsatsen blev att det existerar en skillnad mellan att nyttja den variabla informationen, vilken beskrivs i detta arbete och att inte få någon tilläggsinformation. De mätdata som gavs korrelerade väl med vad testpersonerna ansåg. Det testade systemet var till hjälp, speciellt vid körning på sträckor med en begränsning av 70 km/h.

    Resultatet av detta arbete innebär att körning med stödsystem ger en bättre anpassning av hastigheten i förhållande till den gällande lagliga hastigheten i flertalet fall. Försökspersonerna trivdes med systemet och ansåg sig gärna vilja nyttja ett liknande system i sina privata fordon. De hastighetsvariationer som framkommit i simulatorexperimentet bör verifieras mot fältstudier, eftersom resultaten kan vara något missvisande. Dock visar resultaten på att ett hjälpsystem likt det testade systemet mycket troligt skulle kunna sänka de vanliga ofrivilliga fortkörningarna och därmed öka trafiksäkerheten på vägarna. En fortsatt utveckling och forskning kring ett informationssystem likt det undersökta rekommenderas av författaren till detta examensarbete.

  • 136.
    Hallgren, Mattias
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Competitive strategies and manufacturing focus: an empirical analysis2007Inngår i: International Journal of Production EconomicsArtikkel i tidsskrift (Fagfellevurdert)
  • 137.
    Hallgren, Mattias
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Tekniska högskolan.
    Manufacturing Strategy, Capabilities and Performance2007Doktoravhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This dissertation addresses the topic of manufacturing strategy, especially the manufacturing capabilities and operational performance of manufacturing plants. Manufacturing strategy research aims at providing a structured decision making approach to improve the economics of manufacturing and to make companies more competitive.

    The overall objective of this thesis is to investigate how manufacturing companies make use of different manufacturing practices or bundles of manufacturing practices to develop certain sets of capabilities, with the ultimate goal of supporting the market requirements. The thesis aims to increase the understanding of the role of operations management and its immediate impact on manufacturing performance. Following the overall research objective three areas are identified to be of particular interest; to investigate (i) the relationship among different dimensions of operational performance, (ii) the way different performance dimensions are affected by manufacturing practices or bundles of manufacturing practices, (iii) whether there are contingencies that may help explain the relationships between dimensions of manufacturing capabilities or the effects of manufacturing practices or bundles of manufacturing practices on operational performance.

    The empirical elements in this thesis use data from the High Performance Manufacturing (HPM) project. The HPM project is an international study of manufacturing plants involving seven countries and three industries.

    The research contributes to several insights to the research area of manufacturing strategy and to practitioners in manufacturing operations. The thesis develops measurements for and tests the effects of several manufacturing practices on operational performance. The results are aimed at providing guidance for decision making in manufacturing companies. The most prominent implication for researchers is the manifestation of the customer order decoupling point as an important contingency variable to consider when studying manufacturing operations.

    Delarbeid
    1. Quantification in manufacturing strategy: a methodology and illustration
    Åpne denne publikasjonen i ny fane eller vindu >>Quantification in manufacturing strategy: a methodology and illustration
    2006 (engelsk)Inngår i: International Journal of Production Economics, ISSN 0925-5273, Vol. 104, nr 1, s. 113-124Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Strategic decision-making is often based on conceptual and qualitative models. Considering the vast amount of quantitative models in the literature, it is most interesting and important to explore the possibilities to expand the modelling base for decision-making with quantitative models that can provide deeper analysis, new insights and allow for finer sensitivity analysis. The purpose of this paper is to explore various aspects of quantification in manufacturing strategy-related issues. We review current approaches to quantitative modelling and study how quantitative models are being used and can be used for strategic decision-making in manufacturing. We create a framework and methodology for quantitative modelling for manufacturing strategy, based on market requirements, manufacturing capabilities, manufacturing actions within decision categories, and quantitative modelling approach. The framework methodology includes seven stages of quantification, for the purpose of measuring, linking, comparing, and modelling. The aim of the paper is to provide a structure that can aid in the modelling of strategic manufacturing decisions to improve the capabilities to meet market requirements.

    Emneord
    Manufacturing strategy; Operations; Quantitative modelling
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-14542 (URN)10.1016/j.ijpe.2005.09.004 (DOI)
    Tilgjengelig fra: 2007-05-25 Laget: 2007-05-25 Sist oppdatert: 2010-06-14
    2. Differentiating manufacturing focus
    Åpne denne publikasjonen i ny fane eller vindu >>Differentiating manufacturing focus
    2006 (engelsk)Inngår i: International Journal of Production Research, ISSN 0020-7543, Vol. 44, nr 18-19, s. 3863-3878Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    In order for a manufacturing firm to be competitive, by supporting the market requirements through the manufacturing function, manufacturing should focus on a narrow set of tasks. Focused manufacturing is concerned with the perspectives when designing a manufacturing facility, be it a factory, plant, or plant within a plant. Traditionally, focus has been on the product, the process, or the manufacturing task based on competitive priorities (order winners and qualifiers). So far, the literature implies that a certain facility should have only one focus. In this paper, we present a framework that differentiates focus with respect to different parts of the manufacturing value chain. The point around which focus needs to be differentiated is the customer order decoupling point. We associate alternative types of focus relative to the customer order decoupling point, separating the upstream and downstream parts, and create a framework for choosing focus and how to differentiate manufacturing focus.

    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-14543 (URN)10.1080/00207540600702290 (DOI)
    Tilgjengelig fra: 2007-05-25 Laget: 2007-05-25
    3. Competitive strategies and manufacturing focus: an empirical analysis
    Åpne denne publikasjonen i ny fane eller vindu >>Competitive strategies and manufacturing focus: an empirical analysis
    2007 (engelsk)Inngår i: International Journal of Production EconomicsArtikkel i tidsskrift (Fagfellevurdert) Submitted
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-14544 (URN)
    Tilgjengelig fra: 2007-05-25 Laget: 2007-05-25 Sist oppdatert: 2010-05-31
    4. Competitive capabilities: a contingency perspective
    Åpne denne publikasjonen i ny fane eller vindu >>Competitive capabilities: a contingency perspective
    2007 (engelsk)Inngår i: Journal of Operations Management, ISSN 0272-6963, E-ISSN 1873-1317Artikkel i tidsskrift (Annet vitenskapelig) Submitted
    Abstract [en]

    In this paper we present and test an alternative model for competitive capabilities.Traditionally, a cumulative model has been viewed as having one sequence of buildingoperations capabilities in a firm in support of market needs, including quality,delivery, cost efficiency and flexibility. Although appealing as a conceptual model,empirical testing has not been able to fully support the cumulative model. This paperacknowledges the need for differentiated approaches to managing capability indifferent operating environments. The competitive capability model that is presented istested empirically using data from the High Performance Manufacturing (HPM) study,including three industries and seven countries – a total of 211 plants. The results showthat there is empirical support for differentiating the competitive capabilities; firmsproducing to stock follow a path of quality, delivery and cost, whereas those producingto customer order exhibit a capability path in the order of quality, delivery andflexibility. Thus, while quality and delivery are common, cost and flexibility acts asdifferentiators contingent upon the manufacturing environment.

    Emneord
    Operations strategy; Empirical research; Competitive capabilities; Decoupling point
    Identifikatorer
    urn:nbn:se:liu:diva-53024 (URN)
    Tilgjengelig fra: 2010-01-14 Laget: 2010-01-14 Sist oppdatert: 2017-12-12
    5. Flexibility configurations: Empirical analysis of volume and product mix flexibility
    Åpne denne publikasjonen i ny fane eller vindu >>Flexibility configurations: Empirical analysis of volume and product mix flexibility
    2009 (engelsk)Inngår i: Omega: The International Journal of Management Science, ISSN 0305-0483, E-ISSN 1873-5274, Vol. 37, nr 4, s. 746-756Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    In this paper we address flexibility and investigate the relationship between volume and product mix flexibility. One view of flexibility is that of being a capability in itself: another view is that of flexibility as an enabler, providing the manufacturing system with properties on which other competitive capabilities are built. In this research, the latter view of flexibility is used, where flexibility acts as a second order competitive criterion. The aim is to differentiate between two dimensions of flexibility important to the manufacturing value chain, i.e., volume and product mix flexibility, and to investigate how different flexibility configurations are related to Various manufacturing practices. A clustering research approach is used to identify groups of companies based on flexibility configurations. The groups are then analyzed with respect to characteristics and impact on operational performance. For the empirical investigation, we use empirical data from the high performance manufacturing (HPM) study, including three industries and seven countries-a total of 211 plants. We find that flexibility configurations based on high or low levels of volume and mix flexibility combinations show significant differences both in terms of operational performance, and in terms of emphasis put into different flexibility source factors.

    sted, utgiver, år, opplag, sider
    Kidlington, Oxford, United Kingdom: Pergamon Press, 2009
    Emneord
    Empirical research, Flexible manufacturing, Operations management, Survey, Value chain
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-16407 (URN)10.1016/j.omega.2008.07.004 (DOI)000262063700002 ()
    Merknad

    Original Publication: Mattias Hallgren and Jan Olhager, Flexibility configurations: Empirical analysis of volume and product mix flexibility, 2009, OMEGA-INTERNATIONAL JOURNAL OF MANAGEMENT SCIENCE, (37), 4, 746-756. http://dx.doi.org/10.1016/j.omega.2008.07.004 Copyright: Elsevier Science B.V., Amsterdam. http://www.elsevier.com/

    Tilgjengelig fra: 2009-02-09 Laget: 2009-01-23 Sist oppdatert: 2017-12-14bibliografisk kontrollert
    6. Lean and agile manufacturing: external and internal drivers and performance outcomes
    Åpne denne publikasjonen i ny fane eller vindu >>Lean and agile manufacturing: external and internal drivers and performance outcomes
    2009 (engelsk)Inngår i: International Journal of Operations & Production Management, ISSN 0144-3577, E-ISSN 1758-6593, Vol. 29, nr 10, s. 976-999Artikkel i tidsskrift (Fagfellevurdert) Published
    Abstract [en]

    Purpose - Lean and agile manufacturing are two initiatives that are used by manufacturing plant managers to improve operations capabilities. The purpose of this paper is to investigate internal and external factors that drive the choice of lean and agile operations capabilities and their respective impact on operational performance. Design/methodology/approach - Lean and agile manufacturing are each conceptualized as a second-order factor and measured through a bundle of distinct practices. The competitive intensity of industry and the competitive strategy are modeled as potential external and internal drivers, respectively, and the impact on quality, delivery, cost, and flexibility performance is analyzed using structural equations modeling. The model is tested with data from the high performance manufacturing project comprising a total of 211 plants from three industries and seven countries. Findings - The results indicate that lean and agile manufacturing differ in terms of drivers and outcomes. The choice of a cost-leadership strategy fully mediates the impact of the competitive intensity of industry as a driver of lean manufacturing, while agile manufacturing is directly affected by both internal and external drivers, i.e. a differentiation strategy as well as the competitive intensity of industry. Agile manufacturing is found to be negatively associated with a cost-leadership strategy, emphasizing the difference between lean and agile manufacturing. The major differences in performance outcomes are related to cost and flexibility, such that lean manufacturing has a significant impact on cost performance (whereas agile manufacturing has not), and that agile manufacturing has a stronger relationship with volume as well as product mix flexibility than does lean manufacturing. Research limitations/implications - Cross-sectional data from three industries and seven countries are used, and it would be interesting to test this model for more industries and countries. Practical implications - The results provide insights into the factors that influence the choice of lean or agile manufacturing for improving operations, and the results that can be obtained. Originality/value - To the authors knowledge, this is the first large-scale empirical survey of leanness and agility simultaneously, using data from manufacturing firms in Europe, Asia, and North America. The model incorporates a wide perspective on factors related to lean and agile manufacturing, to be able to identify similarities and differences.

    sted, utgiver, år, opplag, sider
    Emerald Group Publishing Limited, 2009
    Emneord
    Lean production, Agile production, Operations management
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-51776 (URN)10.1108/01443570910993456 (DOI)000271206100001 ()
    Tilgjengelig fra: 2009-11-18 Laget: 2009-11-17 Sist oppdatert: 2017-12-12bibliografisk kontrollert
  • 138.
    Hallgren, Mattias
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi. Linköpings universitet, Tekniska högskolan.
    Olhager, Jan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi. Linköpings universitet, Tekniska högskolan.
    Flexibility configurations: Empirical analysis of volume and product mix flexibility2009Inngår i: Omega: The International Journal of Management Science, ISSN 0305-0483, E-ISSN 1873-5274, Vol. 37, nr 4, s. 746-756Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    In this paper we address flexibility and investigate the relationship between volume and product mix flexibility. One view of flexibility is that of being a capability in itself: another view is that of flexibility as an enabler, providing the manufacturing system with properties on which other competitive capabilities are built. In this research, the latter view of flexibility is used, where flexibility acts as a second order competitive criterion. The aim is to differentiate between two dimensions of flexibility important to the manufacturing value chain, i.e., volume and product mix flexibility, and to investigate how different flexibility configurations are related to Various manufacturing practices. A clustering research approach is used to identify groups of companies based on flexibility configurations. The groups are then analyzed with respect to characteristics and impact on operational performance. For the empirical investigation, we use empirical data from the high performance manufacturing (HPM) study, including three industries and seven countries-a total of 211 plants. We find that flexibility configurations based on high or low levels of volume and mix flexibility combinations show significant differences both in terms of operational performance, and in terms of emphasis put into different flexibility source factors.

  • 139.
    Hallgren, Mattias
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi. Linköpings universitet, Tekniska högskolan.
    Olhager, Jan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi. Linköpings universitet, Tekniska högskolan.
    Schroeder, Roger G.
    University of Minnesota, USA .
    A hybrid model of competitive capabilities2011Inngår i: International Journal of Operations & Production Management, ISSN 0144-3577, E-ISSN 1758-6593, Vol. 31, nr 5, s. 511-526Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Purpose – The purpose of this paper is to present and test a new model for competitive capabilities.Traditionally, a cumulative model has been viewed as having one sequence of building competitivecapabilities in a firm in support of market needs, including quality, delivery, cost efficiency andflexibility. Although appealing as a conceptual model, empirical testing has not been able to fullysupport the cumulative model. This paper acknowledges the need for a hybrid approach to managingcapability progression. It brings together the literature on trade-offs, cumulative capabilities, andorder winners and qualifiers.Design/methodology/approach – A new hybrid approach for modelling competitive capabilities istested empirically using data from the high performance manufacturing (HPM) study, round 3,including three industries and seven countries – a total of 211 plants.Findings – The hybrid model shows significantly better fit with the data from the sample than thecumulative models suggested by previous literature. Empirical support is found for the traditionalperception that a high level of quality is a prerequisite for a high level of delivery performance.However, cost efficiency and flexibility do not exhibit a cumulative pattern. Instead, the results showthat they are developed in parallel. The findings suggest that a balance between cost efficiency andflexibility is built upon high levels of quality and delivery performance.Research limitations/implications – Since we limit the empirical investigation to three industriesand seven countries, it would be interesting to extend the testing of this model to more industries andcountries. This research shows that combining perspectives and insights from different researchstreams – in this case, trade-off theory and the concepts of cumulative capabilities, and order winnersand qualifiers – can be fruitful.Practical implications – The results of this paper provides managers with guidelines concerningthe configuration of competitive capabilities. First, a qualifying level of quality needs to be attained,followed by a qualifying level of delivery. Then, a balance between potential order winners, i.e. costefficiency and flexibility, needs to be attained.Originality/value – This paper presents a new approach to modelling competitive capabilities thatsynthesises previous research streams and perspectives from cumulative capabilities, contestingcapabilities (trade-offs), and order winners and qualifiers.

  • 140.
    Hamilton, Jakob
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Jeresi, Mahmoud
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Geometry-Based Requirements: Support requirement owners in connecting and mediating requirements from SystemWeaver to CATIA V52018Independent thesis Advanced level (degree of Master (Two Years)), 20 poäng / 30 hpOppgave
    Abstract [en]

    Requirements of a Volvo car are stored in a requirements management system at Volvo Car Group (VCG). VCG recently implemented a new requirements management system, a system called SystemWeaver. Many different types of requirements are stored in the SystemWeaver software, where the requirements can only be described in text and pictures. However, some requirements are geometry-based, describing some type of shape or measurement in space that the car should fulfil. Geometry-based requirements are stored in Teamcenter and have two components, the requirement text and requirement geometry in the form of CAD-models. The models are used to illustrate the requirement in space. This master thesis examines the possibilities of connecting text-based requirements in SystemWeaver to requirement geometries. The technical aspects are studied as well as the organizational mechanisms of creating and changing a geometry-based requirement. To find a working solution, research relating to the issue gave input to the project. Furthermore, interviews were conducted at different departments at VCG to get insight in the working tasks of requirement management at the company. The project resulted in a concept of a new process, describing the actions of geometry-based requirement management and how requirement geometries should be connected to SystemWeaver. The new concept outlined the logical steps that are required to work with SystemWeaver and geometry-based requirements. The work has laid a foundation on which future studies can be conducted to further streamline management of geometry-based requirements at VCG. 

  • 141.
    Hasselhorn, Tilmann
    Linköpings universitet, Institutionen för beteendevetenskap, Centrum för studier av människa, teknik och organisation, CMTO. Linköpings universitet, Institutionen för konstruktions- och produktionsteknik, Industriell arbetsvetenskap. Linköpings universitet, Tekniska högskolan.
    Första linjens chefer: upplevt arbete i en industriell verksamhet2002Licentiatavhandling, monografi (Annet vitenskapelig)
    Abstract [sv]

    Arbetsledningens karaktär har förändrats varaktigt under det senare decenniet som följd av nya produktionsfilosofier. Med införandet av team- och processorienterade arbetsorganisationsformer har speciellt karaktären av arbetsledande befattningar närmast produktionsprocessen påverkats. Avhandlingen tar sin utgångspunkt i frågan hur arbetsledarna respektive första linjens chefer upplever sitt arbete i en sådan förändrad, industriell verksamhet. Syftet var att åstadkomma en bättre förståelse för hur dessa chefer upplever, handskas med och gestaltar sin förändrade befattning. Resultaten bygger på datamaterial från halvstandardiserade intervjuer med första linjens chefer tillhörande produktionsdelen av ett svenskt verkstadsindustriföretag. Första linjens chefers redogörelse av sin upplevelse kring chefsarbete återges i sammanfattad form i första resultatdelen. En vidaregående analys med ett rollteoretiskt perspektiv beskriver ett antal förekommande chefsdilemman. Dilemman visar sig ha sin grund i huvudsakligen två konflikter: intra-sändarekonflikter och person-rollkonflikter. De förstnämnda domineras av dubbla budskap som företaget ger upphov till. De senare handlar om chefernas och medarbetarnas motstridiga förväntningar på hur chefsrollen ska utövas.

  • 142.
    Helldal, Michael
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik.
    Tenne, Sofia
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik.
    Positiva miljöeffekter i kölvattnet av Lean produktion: Kan en integrering av miljöaspekter och Lean produktion bidra till att nå synergieffekter och minska risken för suboptimering?2009Independent thesis Advanced level (degree of Master (One Year)), 20 poäng / 30 hpOppgave
    Abstract [sv]

    Denna rapport är resultatet av ett examensarbete utfört vid Institutionen för industriell och ekonomisk utveckling vid Linköpings universitet på uppdrag av konsultbolaget Sustainia AB. Lean produktion, ofta benämnt Lean, har det senaste decenniet blivit en allt mer attraktiv produktionsfilosofi för att minska kostnader och öka kundnöjdhet genom förbättrad leveransservice och effektivare flöde. Ett flertal författare har påpekat att införandet av Lean direkt kan förbättra ett företags miljöprestanda, främst till följd av det minskade slöseri som Lean avser ge upphov till. Vidare finns studier som visar att vissa möjligheter till förbättringar och kostnadsbesparingar riskerar att gå oupptäckta om verksamheten ses ur ett strikt Lean-perspektiv. Med ett miljösynsätt finns dock chans att dessa blir upptäckta. Detta indikerar att såväl kostnads- som miljömässiga fördelar kan nås genom en integration av arbetet med Lean och miljöaspekter.

    Syftet med detta examensarbete har varit att undersöka hur ett företags arbete med Lean respektive miljöaspekter påverkar varandra för att ta reda på om och hur väl de båda arbetssätten skulle kunna fungera tillsammans. Om det visade sig att en integration av Lean och miljö vore möjlig och fördelaktig ur affärsmässig synvinkel skulle sedermera ett förslag tas fram på hur en sådan modell skulle kunna se ut. Arbetets syfte har uppfyllts genom en kombination av litteraturstudier och intervjuer. Fyra svenska företag som arbetar enligt Lean och även har ett uttalat aktivt miljöarbete intervjuades gällande sitt sätt att arbeta med Lean och miljöfrågor samt hur de såg på en eventuell integration av de två arbetssätten.

    Utifrån resultaten från litteratur- och intervjustudien kan konstateras att flera av grundtankarna inom såväl Lean som miljöarbete stöder varandra. Inom båda arbetssätten ses kontinuerliga förbättringar och eliminering av slöseri som viktiga inslag, och båda främjar en organisationskultur där personalen uppmuntras att lösa problem och förbättra företagets prestation. Vissa enskilda verktyg inom Lean riskerar emellertid att ha en negativ inverkan på företagets miljöprestanda, något som i många fall dock kan avhjälpas genom god planering.

    Till ett företags miljöarbete kan Lean bidra med ett proaktivt förhållningssätt och strukturerat arbetssätt och därmed få organisationen att arbeta mer förebyggande och långsiktigt med miljöfrågor. De intervjuade företagen ansåg att Lean generellt hade en positiv inverkan på deras miljöarbete, även om de inte hade gjort någon utvärdering av hur arbetet med Lean påverkat deras miljönyckeltal. De kvantitativa data som erhölls från litteraturstudien pekade på att arbete med Lean kan leda till en direkt minskning av företagets miljöpåverkan inom flera områden. Med utgångspunkt i dessa kvantitativa och kvalitativa data anser författarna således att det finns starka och tydliga tecken som visar på att Lean kan ha en positiv inverkan på miljörelaterade nyckeltal. Ett aktivt miljöarbete kan å sin sida bidra till arbetet med Lean genom att besparingsmöjligheter, som annars skulle riskerat att förbli oupptäckta, uppdagas.

    Studien visade vidare att det inte bara är möjligt att integrera arbete med Lean och miljö, utan att en sådan integration dessutom har potential att vara fördelaktigt ur såväl ett ekonomiskt som ett miljömässigt perspektiv. En integrering kan minska risken för suboptimeringar, och synergieffekter kan erhållas som innebär att större framgångar kan uppnås än vad som skulle ha varit möjligt om arbetet med Lean och miljö hade bedrivits isolerat. Med vetskapen om att en integration är möjlig och har potential att vara fördelaktig ur företagsekonomisk och miljömässig synvinkel utarbetade författarna en modell för hur Lean och miljöarbete kan bedrivas integrerat. I samråd med Sustainia AB bestämdes att denna modell skulle kallas Green Lean, vilket således åsyftar en miljöanpassad, ”grön” form av Lean.

  • 143.
    Hellman, Pasi
    et al.
    Department of Production, University of Vaasa, Vaasa, Finland.
    Liu, Yang
    Department of Production, University of Vaasa, Vaasa, Finland.
    Development of Quality Management Systems: How Have Disruptive Technological Innovations in Quality Management Affected Organizations?2013Inngår i: Quality Innovation Prosperity, ISSN 1335-1745, E-ISSN 1338-984X, Vol. 17, nr 1, s. 104-119Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    This research investigates the history of quality and development of quality management systems. History of quality is investigated from Hammurabi’s law all the way to today’s reigning quality initiatives including ISO, Six Sigma and Lean manufacturing. In the last chapters the current state of quality management is being examined. The foresight method is also opened up and examined. The Innovator’s dilemma concept, originally presented by Clayton Christensen, is used to analyse how quality management systems have been evolved in the last 100 years. Special emphasis is placed on the US manufacturing in the 1970s and 1980s. Based on the literature, the concept of Innovator’s dilemma and the fall of US manufacturing are merged. The result is a prime example that the Innovator’s Dilemma is a universal phenomenon. The industry leader is trying to maintain its position and do everything right but still it is destined to fail. The causes and effects are being discussed in later chapters.

  • 144.
    Hemphälä, Hillevi
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell arbetsvetenskap. Linköpings universitet, Tekniska högskolan.
    En god visuell arbetsmiljö: ögonbesvär, muskuloskeletala besvär och produktivitet hos brevbärare2008Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    This study appears to be one of few intervention studies with focus on eyestrain and lighting on non-computer workplaces. Previous studies have shown strong connections between eyestrain and musculoskeletal strain. The eyes “lead the body” and if the picture on the retina is unfocused the body adjusts the posture, trying to improve the image through changing the viewing distance. This can lead to an unnatural body posture which can contribute in the development of musculoskeletal disorders.

    A good visual environment with proper illuminance, good luminance contrast relationship, good uniformity value of the illuminance and no glare are the best conditions in order to function well at a visually demanding work. Sorting mail is a task that needs good visual ergonomics and can therefore be improved by a change in the visual environment.

    The overall purpose of this thesis is to investigate if a good visual environment have an impact on eyestrain, musculoskeletal strain, productivity, wellbeing, and work induced stress.

    This thesis is based on a literature review and a lighting intervention, with one part before the intervention and two follow-up parts, summer and winter. The results are based on objectively measurements; lighting, time studies, and optometric eye examinations, and two questionnaires. The first questionnaire concerned visual ergonomics and the second had a focus on wellbeing and experience of work related tasks.

    The postmen experienced the new lighting and labeling as improvement. A small decrease in the amount of eyestrain was present, and the younger postmen had a decrease of the musculoskeletal strain. The postmen with eyestrain got a small improvement of the sorting time. When the lighting was improved another factor that could cause strain appeared, the need for good correction in their glasses was identified as the main remaining factor that could cause the observed strain.

    Delarbeid
    1. Synergonomi vid postsortering
    Åpne denne publikasjonen i ny fane eller vindu >>Synergonomi vid postsortering
    2005 (engelsk)Inngår i: Proceedings of the 37th Annual Conference of the Nordic Ergonomics Society, NES, October, Oslo, Norway, 2005Konferansepaper, Publicerat paper (Annet vitenskapelig)
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-13079 (URN)
    Tilgjengelig fra: 2008-03-20 Laget: 2008-03-20
    2. Vision ergonomics when sorting the mail
    Åpne denne publikasjonen i ny fane eller vindu >>Vision ergonomics when sorting the mail
    2006 (engelsk)Inngår i: The 16th World Congress on Ergonomics, International Ergonomics Association, IEA, July, Maastricht, The Netherlands, 2006Konferansepaper, Publicerat paper (Fagfellevurdert)
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-13080 (URN)
    Tilgjengelig fra: 2008-03-20 Laget: 2008-03-20
    3. A lighting intervention for postmen – Effects on eyestrain, MSD, and productivity
    Åpne denne publikasjonen i ny fane eller vindu >>A lighting intervention for postmen – Effects on eyestrain, MSD, and productivity
    2008 (engelsk)Inngår i: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126Artikkel i tidsskrift (Fagfellevurdert) Submitted
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-13081 (URN)
    Tilgjengelig fra: 2008-03-20 Laget: 2008-03-20 Sist oppdatert: 2017-12-13
  • 145.
    Henriksson, Fredrik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Integrated Product and Production Research on Introducing Internet of Things in Swedish Wood Industry Products2018Inngår i: Procedia Manufacturing, E-ISSN 2351-9789, Vol. 25, s. 10-16Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    To enable transitioning the Swedish economy into a bioeconomy, Swedish wood industry need to increase added value and introduce new products to market by introducing new technology and improving the product and production development processes. Research in automotive industry have shown the need for integrating product and production development when introducing new technology in existing production systems, and have indicated a possibility of using specifically designed student case projects in order to generate qualitative data. In this paper, one student case project on product and production development in the Swedish wood industry, involving IoT wood products, is presented and evaluated.

  • 146.
    Henriksson, Fredrik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Introducing New Materials in the Automotive Industry: Managing the Complexity of Introducing New Materials in Existing Production Systems2017Licentiatavhandling, med artikler (Annet vitenskapelig)
    Abstract [en]

    Passenger vehicles are central to Western society, and contribute to a significant part of our greenhouse gas emissions. In order to reduce emissions, the automotive industry as a whole is working to reduce mass in passenger vehicles in order to reduce energy consumption. One way to reduce mass is to introduce lightweight materials in the body of the vehicle. This research aims to explore the relationship between product and production system when introducing new materials.

    Besides a theoretical review and an industry-centered technological mapping, four case studies have been conducted during the course of this licentiate thesis. Two case studies were conducted with engineering design students working as development teams, one case study with the author as the developer and finally one case study in an industrial environment at a product owning company with in-house production. The goal of the case studies has been to increase the collective knowledge of how product development decisions affect production development decisions, and vice versa, when developing passenger vehicles in new materials.

    In the following analysis of case study outcomes, a number of factors important for introducing new materials are discussed. The relationship between product and production is investigated, both in terms of how the production system affects the product and how the product affects the production system. The outcome from this analysis is a mapping of important factors for automotive industry companies to understand and identify when looking at introducing new materials in existing production systems. Finally, a suggestion for future research efforts is presented.

    Delarbeid
    1. An outlook on multi material body solutions in the automotive industry – possibilities and manufacturing challenges
    Åpne denne publikasjonen i ny fane eller vindu >>An outlook on multi material body solutions in the automotive industry – possibilities and manufacturing challenges
    2016 (engelsk)Inngår i: SAE Technical Paper Series, Detroit (MI), USA: Society of Automotive Engineers, 2016Konferansepaper, Publicerat paper (Fagfellevurdert)
    Abstract [en]

    In the automotive industry, mass reduction and lightweight design is a continuing trend that does not show signs of declining. When looking at where to reduce weight in a vehicle, the body is a preferential subsystem due to its large contribution to overall mass and the stability of body composition over a specific model range. The automotive industry of today moves toward a greater differentiation in materials that compose a car, which can be seen in the several different multi material vehicle bodies that have been introduced by manufacturers in recent years. But while mixing materials may contribute to a good compromise between weight reduction and vehicle cost, it also proposes a number of challenges that need to be addressed. Among other material factors, the different coefficients of thermal expansions might introduce new stresses during painting and curing. Joining processes and possible chemical reactions between materials also needs to be taken into account, the same with the question of whether to integrate or differentiate different functions in a system. If the manufacturing plant uses mixed model assembly lines, design of end effectors for gripping multiple different materials is another challenge not previously encountered in this context. In this paper, a number of production and manufacturing related challenges are discussed, and the authors highlight different areas where the requirements of design engineering tools needs to be evaluated for these new multi material concepts and design decisions in order for automotive manufacturers to ensure future market competitiveness.

    sted, utgiver, år, opplag, sider
    Detroit (MI), USA: Society of Automotive Engineers, 2016
    Emneord
    Multi material bodies, Production development, Product development
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-127319 (URN)10.4271/2016-01-1332 (DOI)
    Konferanse
    SAE 2016 World Congress and Exhibition
    Prosjekter
    Produktion2030 - Storskalig tillverkning av produkter i flera material
    Forskningsfinansiär
    VINNOVA
    Tilgjengelig fra: 2016-04-20 Laget: 2016-04-20 Sist oppdatert: 2017-11-08bibliografisk kontrollert
    2. On Material Substitution in Automotive BIWs – From Steel to Aluminum Body Sides
    Åpne denne publikasjonen i ny fane eller vindu >>On Material Substitution in Automotive BIWs – From Steel to Aluminum Body Sides
    2016 (engelsk)Inngår i: 26TH CIRP DESIGN CONFERENCE / [ed] Wang, Lihui; Kjellberg, Torsten, Elsevier, 2016, Vol. 50, s. 683-688Konferansepaper, Publicerat paper (Fagfellevurdert)
    Abstract [en]

    Weight reduction and material substitution are increasing trends in the automotive industry. In this project, the task of substituting the steel body side in the monocoque of a large SUV towards an aluminum body side was investigated through a design engineering approach adopting a breadth-first analysis method. One conclusion based on the analysis is that the choice of joining technology would become arbitrary due to the breadth-first approach. In this paper, the authors present their findings from the aforementioned case, including the challenges with switching between materials with fundamentally different properties when performing material substitution projects. The possibility of having taken a depth-first analysis approach, and the possible effects on the project result, is discussed.

    sted, utgiver, år, opplag, sider
    Elsevier, 2016
    Serie
    Procedia CIRP, ISSN 2212-8271 ; 50
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-130510 (URN)10.1016/j.procir.2016.05.028 (DOI)000387666600115 ()
    Konferanse
    26th CIRP Design Conference
    Prosjekter
    Produktion 2030 - Storskalig tillverkning av produkter i flera material
    Forskningsfinansiär
    VINNOVA
    Tilgjengelig fra: 2016-08-11 Laget: 2016-08-11 Sist oppdatert: 2017-11-08
    3. Including Student Case Projects in Integrated Product and Production Development Research – Methodology Description and Discussion
    Åpne denne publikasjonen i ny fane eller vindu >>Including Student Case Projects in Integrated Product and Production Development Research – Methodology Description and Discussion
    2016 (engelsk)Konferansepaper, Oral presentation only (Annet vitenskapelig)
    Abstract [en]

    Within integrated product and production development research, casestudies needto be performed for data gathering purposes. Today, there are two commonly used ways to perform this research; observingindustry projects orhaving the researchers perform the projects themselves. The first option can pose data access and IPRissues, and the second optioncomes with biasing risks. Another approach is to work with studentcaseprojects, givingstudents interesting projects and findinga solution to mediate both data gathering opportunity and biasing risks. This approach has been tested at Linköping University, with students performing projects in the Vinnovafunded Production 2030 –Large Scale Production in Mixed Materials project. Two larger student case projects have been performed on the topic of material substitution and mixed material solutions within the automotive industry.In this paper, the method used to include student projects is presented along with identified benefits and drawbacks. Including student case projects in research have shown to be beneficial in research on processes, projects and methodology, but needs to be complemented by data fromindustry projects and the researcher ́s own work within integrated product and production development in order to create a more reliable analysis with high level of detail.

    Emneord
    Case studies, Integrated product and production development, mixed material solutions
    HSV kategori
    Identifikatorer
    urn:nbn:se:liu:diva-142930 (URN)
    Konferanse
    7th Swedish Production Symposium, SPS, Lund, October 25-27, 2016
    Forskningsfinansiär
    VINNOVA
    Merknad

    Fulltexten i denna post har endast gjorts tillgänglig via DiVA.

    The full text of this entry has only been made available via DiVA.

    Tilgjengelig fra: 2017-11-13 Laget: 2017-11-13 Sist oppdatert: 2017-11-20
  • 147.
    Henriksson, Fredrik
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    An outlook on multi material body solutions in the automotive industry – possibilities and manufacturing challenges2016Inngår i: SAE Technical Paper Series, Detroit (MI), USA: Society of Automotive Engineers, 2016Konferansepaper (Fagfellevurdert)
    Abstract [en]

    In the automotive industry, mass reduction and lightweight design is a continuing trend that does not show signs of declining. When looking at where to reduce weight in a vehicle, the body is a preferential subsystem due to its large contribution to overall mass and the stability of body composition over a specific model range. The automotive industry of today moves toward a greater differentiation in materials that compose a car, which can be seen in the several different multi material vehicle bodies that have been introduced by manufacturers in recent years. But while mixing materials may contribute to a good compromise between weight reduction and vehicle cost, it also proposes a number of challenges that need to be addressed. Among other material factors, the different coefficients of thermal expansions might introduce new stresses during painting and curing. Joining processes and possible chemical reactions between materials also needs to be taken into account, the same with the question of whether to integrate or differentiate different functions in a system. If the manufacturing plant uses mixed model assembly lines, design of end effectors for gripping multiple different materials is another challenge not previously encountered in this context. In this paper, a number of production and manufacturing related challenges are discussed, and the authors highlight different areas where the requirements of design engineering tools needs to be evaluated for these new multi material concepts and design decisions in order for automotive manufacturers to ensure future market competitiveness.

  • 148.
    Henriksson, Fredrik
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Including Student Case Projects in Integrated Product and Production Development Research – Methodology Description and Discussion2016Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Within integrated product and production development research, casestudies needto be performed for data gathering purposes. Today, there are two commonly used ways to perform this research; observingindustry projects orhaving the researchers perform the projects themselves. The first option can pose data access and IPRissues, and the second optioncomes with biasing risks. Another approach is to work with studentcaseprojects, givingstudents interesting projects and findinga solution to mediate both data gathering opportunity and biasing risks. This approach has been tested at Linköping University, with students performing projects in the Vinnovafunded Production 2030 –Large Scale Production in Mixed Materials project. Two larger student case projects have been performed on the topic of material substitution and mixed material solutions within the automotive industry.In this paper, the method used to include student projects is presented along with identified benefits and drawbacks. Including student case projects in research have shown to be beneficial in research on processes, projects and methodology, but needs to be complemented by data fromindustry projects and the researcher ́s own work within integrated product and production development in order to create a more reliable analysis with high level of detail.

  • 149.
    Henriksson, Fredrik
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    On Material Substitution in Automotive BIWs – From Steel to Aluminum Body Sides2016Inngår i: 26TH CIRP DESIGN CONFERENCE / [ed] Wang, Lihui; Kjellberg, Torsten, Elsevier, 2016, Vol. 50, s. 683-688Konferansepaper (Fagfellevurdert)
    Abstract [en]

    Weight reduction and material substitution are increasing trends in the automotive industry. In this project, the task of substituting the steel body side in the monocoque of a large SUV towards an aluminum body side was investigated through a design engineering approach adopting a breadth-first analysis method. One conclusion based on the analysis is that the choice of joining technology would become arbitrary due to the breadth-first approach. In this paper, the authors present their findings from the aforementioned case, including the challenges with switching between materials with fundamentally different properties when performing material substitution projects. The possibility of having taken a depth-first analysis approach, and the possible effects on the project result, is discussed.

  • 150.
    Henriksson, Fredrik
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Johansen, Kerstin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Product development in the Swedish Automotive industry: Can design tools be viewed as decision support systems?2015Inngår i: / [ed] Anthony SF Chiu, International Foundation for Production Research (IFPR) , 2015Konferansepaper (Annet vitenskapelig)
    Abstract [en]

    Design engineers working in the automotive industry have to take many design decisions, based on numerous diverse criteria. This results in a high workload of complex decisions. One way to reduce decision complexity and improve decisions could be to improve design tools. Decision support systems (DSSs) have been used in a managerial context to improve decisions. In this article, the authors assess whether design tools generally can be viewed as DSSs. A combination of literature review, surveys and qualitative interviews with seven design engineers was used to assess whether current design tools function as decision supports in product development. Although the specific design context needs to be considered, this study’s results suggest that design tools can generally function as DSSs. In future work, the adaptability to different problem solving patterns needs further in-depth research in the form of individual studies for specific tools in specific contexts.

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