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  • 101.
    Elg, Mattias
    et al.
    Linköpings universitet, HELIX Vinn Excellence Centre. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Kvalitetsteknik. Linköpings universitet, Tekniska högskolan.
    Langstrand, Jostein
    Linköpings universitet, HELIX Vinn Excellence Centre. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Kvalitetsteknik. Linköpings universitet, Tekniska högskolan.
    Balanced Scorecard as Organizational Practice: A multi-perspective analysis2010Övrigt (Övrigt vetenskapligt)
    Abstract [en]

    Much academic attention has been directed towards management models, but there is limited research into the details of how these models are put to use in organizations. In this paper, we employ a multi-theoretical process perspective on the introduction of Balanced Scorecard in a Swedish healthcare organization. Through the application of actor-network theory, behavior setting theory and distributed cognition, we have identified a set of complementary observations and conclusions. First, we claim that a critical mass of actors is needed to support the change effort. We also emphasize the need for a problematization process in which critical voices are given room to influence the introduction. Further, we stress the importance of aligning the physical environment with organizational goals, and argue that well-designed feedback mechanisms may prevent undesired decoupling of managerial practice.

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    Balanced Scorecard as Organizational Practice: A multi-perspective analysis
  • 102.
    Elo, Kristofer
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsteknik. Linköpings universitet, Tekniska högskolan.
    Karlsson, Julia
    Lydebrandt, Kristian
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Monteringsteknik. Linköpings universitet, Tekniska högskolan.
    Automation of Plastic Recycling – A case study2009Ingår i: Proceedings of EcoDesign 2009, Sapporo, Japan, Springer, 2009, s. 935-940Konferensbidrag (Refereegranskat)
    Abstract [en]

    Plastic recycling is an increasingly important issue intoday’s society. The number of plastics and theirvariation with additives has increased lately, affecting inturn the possibilities for plastic material recycling.However, trends in e.g. Japan show a reduction in thenumber of plastics used in e.g. household appliances.This reduction has been put into force in order to easeplastic recycling for those kinds of products.In Sweden, more efforts are put on collecting plasticfor material recycling. The intention for doing this is tohave more plastic material recycled rather thanincinerated and energy recovered. This paper deals witha conceptual investigation and development of anautomatic plastic recycling plant in Sweden. In order toreach a recycling plant that fulfills required technical andeconomic specifications, a large investigation of existingtechniques was performed. This investigation revealedmany techniques described in research, but also whichtechniques that were used by recycling industry today.The results of these studies became a conceptual andpotential well-functioning material recycling plant forplastics which is fully automatic. However, the focus ofthis development has been to sort out and materialrecycle the most common plastics, namely polyetene(LDPE and HDPE), polypropylene (PP), polyethylene(PET), polyvinyl chloride (PVC) and polystyrene (PS)whereas the other plastics have been sorted out forenergy recovery. Having these delimitations, a goodrecycling process plant can be achieved.

  • 103.
    Elo, Kristofer
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Automatic Dismantling Challenges in the Structural Design of LCD TVs2014Ingår i: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 15, s. 251-256Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Many liquid crystal display television sets (LCD TVs) end up in the waste stream today. The combination of hazardous materials such as mercury and liquid crystal, and the labor-intensive disassembly of LCD TVs, make the recycling process interesting to automate. However, since there are so many manufacturers the variation of LCD TVs is high, making automation a challenge. Todays most common automatic process utilizes shredders, resulting in degradation of recycled material and possible decontamination of machine equipment. This paper aims to investigate the challenges related to the structural design of LCD TVs for an automatic dismantling process for the recycling of LCD TVs. The challenges identified during the empirical study were related to the mixture of materials, inhomogeneous materials, thin design, separation of the different components and finding a suitable dismantling sequence without unnecessary removal of components.

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  • 104.
    Elo, Kristofer
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsteknik. Linköpings universitet, Tekniska högskolan.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsteknik. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Monteringsteknik. Linköpings universitet, Tekniska högskolan.
    Evaporation of Mercury from CCFLs during Recycling of LCD Television Sets2013Ingår i: Proceedings of EcoDesign 2013 International Symposium, 2013Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    The element mercury is one of the most hazardous substances known. Still, it is common in the air, water, soil and products we use in our daily life. LCD TVs is one of these products. To prevent the mercury in the LCD TVs from polluting the environment, the LCD TVs are recycled. This is done through automatic shredding or manual disassembly where the mercury can spread in the work environment, the process equipment or to the recycled material. This is due to broken CCFLs in the LCD TVs which contain the mercury. The aim of this paper is to investigate, through a literature review and an empirical study, the amount of mercury released into the work environment due to broken CCFLs from LCD TVs. In the literature review there were found the amount of mercury other researchers has found in CCFLs from LCD TVs, and also where the mercury was found. In the empirical study, the amount of mercury in a LCD due to broken CCFLs were measured and validates the results from other researcher and states that the mercury is difficult to predict.

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    Evaporation of Mercury from CCFLs during Recycling of LCD Television Sets
  • 105.
    Elo, Kristofer
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Process concepts for semi-automatic dismantling of LCD televisions2014Ingår i: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 23, nr 2014, s. 270-275Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    There is a large variety of electrical and electronic equipment products, for example liquid crystal display television sets (LCD TVs), in the waste stream today. Many LCD TVs contain mercury, which is a challenge to treat at the recycling plants. Two current used processes to recycle LCD TVs are automated shredding and manual disassembly. This paper aims to present concepts for semi-automated dismantling processes for LCD TVs in order to achieve higher productivity and flexibility, and in turn increase the value of the recycled materials, improve the work environment for operators and remove mercury from the recycled materials. A literature review and two empirical studies were performed to be able to present a concept for dismantling direct illuminated LCD TVs. The process used a circular saw and/or a band saw to machine two cuts in LCD TVs to gain access to the mercury-containing cold cathode fluorescent lamps inside. This conceptual process is compared to the other processes found in the literature.

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  • 106.
    Elo, Kristofer
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsteknik. Linköpings universitet, Tekniska högskolan.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Monteringsteknik. Linköpings universitet, Tekniska högskolan.
    Requirements and needs of automatic material recycling of flat panel displays2010Ingår i: Proceedings of Going Green CARE INNOVATION 2010, 8th International Symposium, November 8-11, Vienna, Austria, paper 107 on CD., 2010, s. 107-107Konferensbidrag (Refereegranskat)
    Abstract [en]

    The amount of flat panel displays in the World is increasing and the day whenthe displays will start to end up in the waste stream in great number is getting closer. Themost common flat panel display, the liquid crystal display, contains liquid crystals, indiumand mercury. The capacity of the recycling plants is not dimensioned according to theamount of displays that needs to be recycled in the near future. To increase the capacity ofthe recycling plants and achieve a better work environment there is a possibility to automatethe recycling process in a greater extends comparing with today. The requirements andneeds of the automated processes are to handle; all incoming material, e.g. liquid crystaldisplays, plasma display panel, organic light emitted diode, other types of displays andother electronic waste, identify and separate the different incoming materials, disassemblethe material and separate the components and materials of interest.

  • 107.
    Elvnäs, Simon
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Vad arbetsledare ska göra och varför de inte gör det: En beskrivning av tillämpad beteendeanalys för utveckling av arbetsledares arbetssätt2010Självständigt arbete på avancerad nivå (magisterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Beteendevetenskapen har 80 års vetenskaplig bakrund, tillämpningen av dess metodik inom näringslivet har pågått i cirka 30 år och i Sverige har den knappt börjat. Kärnan av dess tillämpning utgår ifrån beteendeanalys som är ett vetenskapligt metodik som syftar till att förstå varför människor gör det de gör i olika situationer. Att tillämpa beteendeanalys inom individuell psykologisk behandling så som KBT (Kognitiv Beteendeterapi) har visat sig vara en både tids- och kostnadseffektiv såväl som framgångsrik metod. Forskning och tillämpningen av metodiken inom näringslivet för arbetsledning och organisationsutveckling är i det närmaste obefintlig i Sverige trots att den vunnit mark utomlands i många föregångsländer och stora företag.

    Den beteendevetenskapliga organisationslitteraturen och dess forskare hävdar att ledarskap utan kunskap om beteendevetenskapliga metoder skadar både produktivitet, personlig utveckling och trivsel på arbetet. Det finns en väl utvecklad och vetenskapligt underbyggd forskning, framgångsrika referensföretag samt en mängd vinster med arbetssättet och ändå fortsätter företag och dess chefer att gång på gång jaga kortsiktiga vinster och investera i utvecklingsförsök som inte leder till en konkret förändring i verksamheten. Företag tappar personal, lönsamhet och engagemang och försöker ännu mer och ännu hårdare med en redan dåligt fungerande strategi som många gånger är baserade på felaktiga grundantaganden och övertygelser om varför de anställda gör det de gör.

    I detta arbete redogörs, genom en litteraturstudie, vad metodiken går ut på samt att försök att förklara metodikens centrala begrepp utifrån författarnas synvinkel. Ett bekvämlighetsurval av 10 svenska företagsledare som på något sätt kommit i kontakt med metodiken har tillfrågats, genom en semistrukturerad intervju, om deras synvinkel på denna metodik. Enligt företagsledarna finns intresse och stora vinster av tillämpning men hinder finns också främst i form av tidsbrist och okunskap om metodiken och dess tillämpning.

    Företagen behöver konkret hjälp och handledning på plats för sina arbetsledare. De största skillnaderna mellan denna metodik och det mer traditionella ledarskapet ligger i grundantagandet om vad som styr människors beteende. Tillämpningen av metodiken sker tvärt emot vår övertygelse att koncentrera oss på det som sker innan beteendet och istället koncetrera oss på vad som sker direkt efteråt. Förespråkarna hävdar att insatsen kräver ett nytt agerande men effekten bli mer hållbar och gynnar såväl de anställda som företagets egna utveckling.

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    FULLTEXT01
  • 108.
    Engbåge, Niklas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Flodell, Jakob
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion.
    Effektivisering av layout i produktionshallen på ETP Transmission AB: Layoutoptimering2019Självständigt arbete på grundnivå (högskoleexamen), 10,5 poäng / 16 hpStudentuppsats (Examensarbete)
    Abstract [en]

    This bachelor thesis is made on behalf of ETP Transmission AB during spring2019 to develop and produce layouts that are optimized for future demands. The proposals of the layouts should consider aspects such as ergonomics, economics and efficiency.

    ETP:s products include casings and chucks. The production is located in Linköping, Sweden. In 2017 the company had 52 employees and the turnover was 110 million SEK. ETP:s vision for the production is to make it more efficient to be able to produce more. Therefore, they have decided to invest in the production hall by adding a lathe and three paternoster lifts. They also want to make space for two sanding machines. Because of the changes in the production hall, ETP needs a new layout to fulfill their new demands.

    The method “Systematic Layout Planning” has been used to develop different proposals of layouts. Together with theory from different types of productions has three different layout concepts created. These concepts have been analysed through an extensive SWOT analysis process. Based on ETP:s suggestion, only two concepts were focused on. The result includes two layouts, both of them are fulfilling ETP:s demands.

    The report describes the ideology “Lean”, with focus on the 5S tool. 5S is a tool that helps keep the workplace organized and maximize efficiency and effectiveness. The ideology Lean was used in the development of the concepts.

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    Effektivisering av layout i produktionshallen på ETP Transmission AB
  • 109.
    Engkvist, Inga-Lill
    et al.
    Linköpings universitet, Institutionen för medicin och hälsa, Avdelningen för fysioterapi. Linköpings universitet, Medicinska fakulteten. KTH Royal Institute Technology, Sweden.
    Eklund, Jörgen
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Logistik- och kvalitetsutveckling. Linköpings universitet, Tekniska fakulteten. KTH Royal Institute Technology, Sweden.
    Krook, Joakim
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska fakulteten.
    Björkman, Mats
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Perspectives on recycling centres and future developments2016Ingår i: Applied Ergonomics, ISSN 0003-6870, E-ISSN 1872-9126, Vol. 57, s. 17-27Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The overall aim of this paper is to draw combined, all-embracing conclusions based on a long-term multidisciplinary research programme on recycling centres in Sweden, focussing on working conditions, environment and system performance. A second aim is to give recommendations for their development of new and existing recycling centres and to discuss implications for the future design and organisation. Several opportunities for improvement of recycling centres were identified, such as design, layout, ease with which users could sort their waste, the work environment, conflicting needs and goals within the industry, and industrialisation. Combining all results from the research, which consisted of different disciplinary aspects, made it possible to analyse and elucidate their interrelations. Waste sorting quality was recognized as the most prominent improvement field in the recycling centre system. The research identified the importance of involving stakeholders with different perspectives when planning a recycling centre in order to get functionality and high performance. Practical proposals of how to plan and build recycling centres are given in a detailed checklist. (C) 2016 Elsevier Ltd. All rights reserved.

  • 110.
    Englund, Martin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell arbetsvetenskap.
    Röststyrning av aggregatet på en engreppsskördare: En Wizard of Oz-studie2009Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Syftet med denna studie var att utreda hur röststyrning kan användas för kontroll av aggregatet på en engreppsskördare.

     

    För att studera röststyrning genomfördes en så kallad Wizard of Oz-studie. Metoden går ut på att en människa ersätter en funktion i ett system som ännu inte finns eller är färdigutvecklad. I studien var det röstigenkänningen och inmatningen av korrekt respons som utfördes av en människa, trollkarlen. Rollen som trollkarl utfördes av en före detta skördarförare som numera arbetar som forskare på Skogforsk.

     

    Studien genomfördes i Skogforsks skogsmaskinsimulator. I den kan en försöksperson på ett verklighetstroget sätt arbeta med en engreppsskördare. Som försökspersoner användes fem professionella förare.

     

    Innan en förare provade röststyrningen fick han köra simulatorn med konventionell styrning för att vänja sig vid hur maskinen kändes att köra i den simulerade miljön. Därefter fick föraren använda sig av röststyrning. Försökspersonerna som var omedvetna om trollkarlens existens fick endast instruktion om att slutavverka ett bestånd genom att kontrollera aggregatet med rösten. De fick inga förslag på kommandon eller uttryck att använda utan fick själva utforska systemet och använda det som de ville. Kranen kontrollerade de som vanligt med spakarna.

     

    Under studien observerades försökspersonernas agerande av försöksledaren och efteråt genomfördes en intervju om upplevelsen av röststyrningen.

     

    Alla förarna lärde sig snabbt att använda systemet och använde sig av samma princip. En knapptryckning ersattes med ett kommando. Förarna använde sig till en början av uttryck de var bekanta med sedan tidigare. De rationaliserade medvetet uttrycken de använde till att bli korta och nästan alltid bara innehålla ett ord.

     

    Överlag tyckte försökspersonerna att röststyrningen var en positiv upplevelse och tyckte att det fungerade bra men förutsåg att det skulle bli problematiskt att använda vid svårarbetad skog som kräver mycket manuell inblandning i apteringen.

     

    Röststyrningen verkar gynna användning av automatiska sekvenser.

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  • 111.
    Engström, Marcus
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi.
    Gembäck, Johan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Produktionsekonomi.
    Lagerdimensionering vid bearbetningsproduktionen hos Volvo Powertrain i Skövde2009Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Volvo Powertrain tillverkar motorer och drivlinor till AB Volvos samtliga dotterbolag förutom Volvo Aero. Vid anläggningen i Skövde tillverkas motorer och delar till motorer och växellådor och vid anläggningen finns alla tre nödvändiga produktionsområden; gjuteri, bearbetning och montering. När rådande lågkonjunktur slog till stod bearbetningen med väldigt höga lagernivåer vilka företaget snabbt tvingades sänka då det blev huvudfokus från koncernledningen att minska det bundna kapitalet. Utan egentlig analys sattes nya gränsnivåer för lagren inom samtliga avdelningar på bearbetning och målet med examensarbetet har varit att ta fram en metod för att dimensionera säkerhetslagret på optimal nivå med bibehållen hög leveranssäkerhet. Därigenom skulle företagets lagernivåer kunna styrkas med hjälp av en teoretisk grund.

    Som utgångspunkt har en lagernivådimensionering med servicenivåkonceptet SERV2 och där alla artiklar tillåts ha differentierade servicenivåer använts. Utifrån Volvo Powertrains förutsättningar har ett optimeringsproblem formulerats. Det visar sig vid närmare studie av detta problem att det är ett ickelinjärt heltalsproblem, vilket försvårar lösningsgången avsevärt. För att komma runt dessa beräkningsmässiga problem approximerades ett av bivillkoren för att ta fram en lösningsheuristik. Dock upptäcktes efter ett antal försök att denna inte uppfyllde samtliga bivillkor alla gånger varför det beslutades att låta heuristikens lösning fungera som startlösning till en sökmetod vid letandet efter lokalt optimum.

    I rapporten beskrivs ingående vilka parametrar som behöver mätas och hur för att alla avdelningar ska använda samma mätmetod vid framtagande av nödvändiga indata. Metoden har implementerats i Excel där användaren får mata in värden på dessa parametrar vilka sedan används i de nödvändiga beräkningarna. De data som sedan presenteras som resultat är vilka batchstorlekar som ska produceras, vilken säkerhetslagernivå som ska gälla, vid vilken nivå en ny beställning ska genomföras samt uppnådd leveranssäkerhet.

    Utöver denna del presenteras även ett nytt sätt att sköta lagerstyrningen i de fall där det finns en flaskhals tidigt i produktionsflödet och som därmed bestämmer produktionstakten i resten av flödet. Eftersom detta skapar en sugstyrning genom flödet där mellanlager är onödiga blir produktionen mer känslig för störningar, vilket leder till att tidigare dolda problem inom produktionen kommer upp till ytan.

    Resultaten av genomförda simuleringar visar att metoden innebär minskade lagernivåer samtidigt som önskad leveranssäkerhet upprätthålls. Genom att implementera metoden kommer bearbetningen vid Volvo Powertrain i Skövde att få en metod att stödja sina beslut på vilken optimerar lagernivåerna samtidigt som en hög leveranssäkerhet garanteras.

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    FULLTEXT01
  • 112.
    Eriksson, Frida
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Andersson, Märta
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    Interface Development for Semi-Autonomous Trucks: Visual and Auditory Feedback2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Vehicles are becoming increasingly autonomous, as automotive industries are investing in innovative technology. Therefore the technology becomes more available and affordable, making it possible for Toyota Material Handling Europe (TMHE) to introduce automated features in their trucks. Vehicles that have a forward collision warning system, and thus are partly autonomous, are involved in less accidents than those without. In manufacturing industries there is currently a problem with truck collisions and an automated solution might be a suitable way to prevent these. When implementing an automation device, human machine interaction and user-friendliness are aspects to keep in mind during the development.

    The thesis concerns how autonomous features can assist the truck driver, and how to provide the driver with intuitive feedback. The purpose was to ensure the drivers’ and surrounding personnel’s safety as well as increase the productivity. Research was performed regarding in what situation an assisting device is needed and how to communicate information in an intuitive manner to help the driver in this situation. A conceptual interface was developed that allows communication between the driver and a future all-knowing system, that tracks all objects and personnel in a warehouse.

    The drivers have had a central role in the process. The observations were performed in the TMHE warehouse to identify situations. The most perilous and frequent situation was when drivers need to focus both in the fork and drive wheel directions simultaneously. This either puts the surroundings or the driver in danger. A conceptual interface was developed to help the driver in this situation. This resulted in a concept implementable in both current and future trucks, to harmonise the solution and ensure a safe warehouse environment. A lo-fi prototype was constructed and evaluated iteratively with drivers to ensure the quality and usability of the concept.

    The resulting feedback solution consists of sounds from speakers mounted in the headrest and a display interface with warning symbols. The sounds are directional to notify the driver if the danger is to the left or right behind his back. If the danger is only semi-close, the driver receives a warning, but if it is very close, the truck is stopped autonomously. The symbols appear on the display simultaneously as the sounds are heard, to provide further feedback. Additionally, an Autonomous Positioning feature has been developed, that consists of symbols and buttons on the display interface, as well as an alert sound from the display to indicate the system’s activation and deactivation. Safety is enhanced since neither personnel nor trucks are in risk of collision when implementing the concept. As the concept helps the driver position the truck effortlessly towards the pallet the productivity is also improved. 

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    fulltext
  • 113.
    Eriksson, Gustav
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Engberg, Anton
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Automating the CAD to Virtual Reality Pipeline for Assembly Simulation2020Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Virtual reality is emerging as a valuable tool in the manufacturing industry, as it allows engineers to place themselves in a virtual environment in which they can inspect and evaluate their 3D designs, providing a sense of scale not available through a 2D screen. Siemens Industrial Turbomachinery AB currently uses physical prototypes to assess whether their designs work from an assembly perspective, which can be expensive and time consuming to make and are often downscaled. Therefore, an interest in exploring the possibility of using virtual reality as a tool for simulating and evaluating assembly sequences has emerged, as well as training operators on said sequences, which lays the foundation for this thesis work.

    The thesis explores the possibility of using virtual reality to simulate assembly sequences using imported CAD models. Emphasis is put on automating the CAD to virtual reality pipeline, as well as how arbitrary CAD models can be presented in virtual reality and how assembly evaluation and training of said CAD models can be simulated in VR. An application is developed in Unreal Engine to explore the possibilities of using the program for virtual reality assembly simulation, as well as identifying potential problem areas. A solution to each of the problems are proposed, and these solutions together make up the application. The application is evaluated with end users to identify areas of improvement.

    The general conclusions that can be drawn from the results are that there are differences in how CAD programs and Unreal Engine handle and make use of 3D geometry which can cause issues, and that the number of parts and the size of these parts are the two most prominent parameters that can cause problems when importing, handling and using arbitrary CAD models in Unreal Engine.

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  • 114.
    Eriksson, Linda
    et al.
    Linköpings universitet, Institutionen för produktionsekonomi.
    Gustafsson, Mikael
    Linköpings universitet, Institutionen för produktionsekonomi.
    Lappning eller kuggslipning: Av kronhjul och pinjonger på Scanias transmissionsavdelning2006Självständigt arbete på grundnivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats
    Abstract [sv]

    Detta examensarbete är utfört på transmissionsavdelningen DX på Scania i Södertälje. Syftet med arbetet är att avgöra vilken av metoderna lappning eller kuggslipning som lämpar sig bäst för hårdbearbetning av kronhjul och pinjonger, det vill säga de ingående komponenterna i centralväxeln på Scanias lastbilar och bussar. Utvärderingen av metoderna görs ur ett helhetsperspektiv där hänsyn tas till konstruktion, produktion, logistik och ekonomi.

    Bakgrunden till att Scania vill ha denna fråga utredd är bland annat att lapprocessen medför vissa problem. I lappningen bearbetar kronhjulet och pinjongen varandra vilket medför att produktionsflödena för delarna går ihop i resursen. Det orsakar effektivitetsförluster och gör flödet svårt att planera. Med kuggslipning bearbetas kronhjul och pinjong i separata kuggslipningsmaskiner vilket medför att planeringen kan ske helt separat för kronhjul och pinjong. Den andra begränsningen som Scania ser med lappning är att endast ytterst lite material kan avverkas med metoden. Kuggslipen kan avverka fem gånger så mycket material mot vad som är möjligt med lappning.

    Även andra problem identifieras med lappning. Exempelvis de att metoden inte kan garantera stabil kvalitet samt att automatisering av hårdbearbetningen inte är möjligt med lappning. Kuggslipning garanterar däremot jämn kvalitet och skapar förutsättningar för automatisering. Förutom att flera problem med dagens produktionsprocess kan lösas genom kuggslipning framkommer även ytterligare fördelar med metoden. Med kuggslipning kan mer komplexa former slipas än med lappning vilket skapar möjligheter vid designprocessen. Flankformen på kuggen kan då modifieras för att åstadkomma starkare och tystare växlar.

    Det finns även risker förknippade med kuggslipning. De som identifieras i rapporten är dels risken för bränningar, vilket innebär ytskador orsakade av hög värmeutveckling mellan slipskiva och arbetstycke. En annan risk härrör till den slipmån som avverkas i slipen. Eftersom mer material avverkas vid kuggslipning än vid lappning kan det eventuellt komma att krävas en längre tid i härdugnen före hårdbearbetningen för att kompensera för den ythårdhet och det härddjup som slipas bort.

    Utöver möjligheter och risker i och med en övergång från lappning till kuggslipning identifieras även andra förändringar som ett metodbyte innebär, bland annat med avseende på produktionsutrustning. Här framkommer att kuggslipning kan medföra kortare cykeltider i kuggfräsningen vid mjukbearbetningen samtidigt som cykeltiden blir längre för kronhjulen i svarvningen vid hårdbearbetningen.

    Den slutsats som dras med hänsyn till syftet är att Scania bör övergå till kuggslipning av hela sitt växelprogram. De främsta argumenten för det är dels den potential som skapas ur planeringssynpunkt i och med att produktionsflödena av kronhjul och pinjong separeras, dels den ökade prestanda och jämna kvalitet som kan uppnås med kuggslipning.

  • 115.
    Eriksson, Linda
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Simme, Lina
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    The Application of Futures Studies in Innovation Processes: Scenario methods as a tool to facilitate flexibility and enable future resilient products2020Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Companies are pressured by dynamic markets and the increase of innovation speed, technology change and shortening of product life cycles. They need to attend to customer demands and ever-changing environmental conditions, policies and regulations set by governments and institutions in order to stay relevant on the market and be allowed to operate. Innovation has therefore become a must and the innovation processes are a central part of companies’ operations. Futures studies is presented as a systematic way of studying the future that can contribute to a better understanding of the needed direction of innovations. The aim of the study is to investigate how futures studies can be embodied in the innovation process of manufacturing companies in the industry of rail and road vehicles.

    The structure of an innovation process within the industry of rail and road vehicles is summarized to consist of three different phases: the fuzzy-front-end, the development and the maintenance. The innovation process is further divided by the components of the product and during the entire process there are decision points to evaluate the projects. The organizational aspects which are considered to have the most influence on the innovation process concern the company environment and internal knowledge sharing. Futures studies are moderately performed at different stages of the innovation process and levels of the organization, mainly at corporate level and in the fuzzy-front-end. The people involved in these activities are solely employees from the company in question and the main issue found regarding the activities of futures studies is that the results of the foresight are not communicated properly across the company. Two ways in which futures studies can be embodied in the innovation process are identified to create more high-quality ideas and to tune the product during the process according to the future market, with a third way ensuring alignment with corporate level. 

    A recommendation is presented consisting of a scenario workshop which enables for futures studies to be embodied in the innovation process of manufacturing companies. Activities and pointers for prior, during and after the workshop are presented. The results of the workshop will further be embodied in the innovation process in three different ways, in the beginning, alongside and as a basis for the corporate strategy.

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  • 116.
    Ersson, Carolina
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska högskolan. Linköpings universitet, Biogas Research Center.
    Ammenberg, Jonas
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska högskolan. Linköpings universitet, Biogas Research Center.
    Eklund, Mats
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska högskolan. Linköpings universitet, Biogas Research Center.
    Connectedness and its dynamics in the Swedish biofuels for transport industry2015Ingår i: Progress in Industrial Ecology, An International Journal, ISSN 1476-8917, E-ISSN 1478-8764, Vol. 9, nr 3, s. 269-295Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Connectedness through cooperation with other sectors regarding feedstock, energy, products and by-products is important for environmental performance of industrial production. The aim of this study is to provide a better understanding of the level of connectedness in the Swedish biofuels for transport industry, involving producers of ethanol, biogas and biodiesel. In interviews, the CEOs of four important companies provided information about current strategies, historic and planned development. The production systems are dynamic and have changed significantly over time, including material and energy exchanges between traditionally separate industries. Interesting development was noted where revised business strategies have led to changed cooperation structures and thus altered material and energy flows. Fuel and raw material prices are very influential and all of the respondents said that political decisions to a large extent affect their competitiveness and emphasised the importance of clear long-term institutional conditions, ironically very much in contrast to the current situation within EU and Sweden.

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  • 117. Beställ onlineKöp publikationen >>
    Eslami, Mohammad H.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Projekt, innovationer och entreprenörskap. Linköpings universitet, Tekniska fakulteten.
    Knowledge integration with customers in collaborative product development project2017Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    Driven by rapid technological developments, greater customer expectations, and increased product complexity,product development processes increasingly rely on the integration of dispersed specialist knowledge.Consequently, many industrial firms are changing the way they approach product development. Productdevelopment increasingly relies on knowledge integration across firm boundaries. Customers are one of the mostindispensable sources of knowledge, and their knowledge needs to be integrated during product development.However, little is known about the processes and mechanisms used to integrate customer knowledge in productdevelopment.Therefore, firms must devise processes and mechanisms that support knowledge integration withcustomers. This thesis aims to investigate knowledge integration with customers in collaborative productdevelopment.

    The work described in this thesis combines a case study with a survey approach. More specifically, five casestudies were conducted at three industrial manufacturing firms. Data were collected in 46 interviews, along withinformal discussions, workshops, and secondary material. The case studies revealed the role of knowledgeintegration, knowledge integration mechanisms, and the importance of contextual factors related to the customer’stechnical capability, and the locus of initiative for the product development project. A cross-sectional survey wasperformed in order to ascertain the role of knowledge integration and its effect on innovation performance and theeffect of firms and customers’ technical capability and locus of initiative on knowledge integration withcustomers. The survey study generated 216 responses from firms operating in the Swedish manufacturingindustry.

    This thesis consists of a compiled summary and five appended papers. The results in these provide the basis formodelling knowledge integration with customers. The findings confirm that integrating knowledge withcustomers in product development is associated with better innovation performance. Further, the results point tothe dynamic characteristics of knowledge integration in product development processes. More specifically, firmstend to apply different combinations of mechanisms in different phases, depending on the intended content of theknowledge contribution of the customer and the requirements of each phase in the development process. Inaddition, the degree of technical capability, internal integration capability, and locus of initiative are importantfactors influencing knowledge integration processes. This thesis sheds new light on collaborative productdevelopment with customers by demonstrating that knowledge, and particularly the integration of knowledgeacross firm boundaries, is a central property of product development. The study focuses on industrial andmanufacturing firms, complementing current perspectives on the role of customers in other sectors. In thisparticular sector, complexity and system-wide implications need to be resolved together with customers throughknowledge integration activities. An important implication of the thesis is that firms need to devise mechanismsfor knowledge integration with customers, and be prepared to redevise these as the firm progresses through theproduct development phases.

    Delarbeten
    1. Knowledge integration with customers in collaborative product development projects
    Öppna denna publikation i ny flik eller fönster >>Knowledge integration with customers in collaborative product development projects
    2016 (Engelska)Ingår i: Journal of business & industrial marketing, ISSN 0885-8624, E-ISSN 2052-1189, Vol. 31, nr 7, s. 889-900Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    Purpose This paper addresses the need for managerial and organizational approaches to knowledge integration with customer in collaborative product development projects. The purpose is to identify the roles of customers in terms of the customerᅵs knowledge contribution and timing of customer collaboration in the product development process. Design/methodology/approach This study is based on a multi-case study approach, comprising four product development projects from two large international suppliers. The cases were selected following the theoretical replication logic. Data consist of interviews, workshops, and secondary information. For each of the cases, a within case analysis was performed followed by a cross-case analysis. Findings The study shows that the customerᅵs knowledge contribution is aligned with the specific requirements of each phase of the product development. Three specific customer roles are identified and connected to the customerᅵs knowledge contribution and the timing of customer collaboration. The technical capability of the customer and the locus of initiative of the product development project are affecting the prerequisites for knowledge integration with customers. Research limitations/implications The study is performed from the perspective of supplier firms. We have not been able to capture the perspective of the customer in detail. As it is expected that both customers and suppliers benefit from a systematic knowledge exchange, future studies could examine knowledge contributions in both directions. Practical implications The findings can be used to devise effective approaches for collaborative product development with customers related to the customerᅵs knowledge contribution and the timing of customer collaboration and provide guidance to firms seeking to benefit from knowledge residing at customers. Originality/value This is one of the first studies to focus on the integration of customersᅵ knowledge in product development processes. This paper contributes to the customerᅵsupplier collaboration literature by presenting further insight into customersᅵ knowledge contributions, the timing of customer collaboration in product development processes and the prerequisites for knowledge integration with customers.

    Ort, förlag, år, upplaga, sidor
    AMER SOC MECHANICAL ENGINEERS, 2016
    Nationell ämneskategori
    Nationalekonomi Ekonomi och näringsliv
    Identifikatorer
    urn:nbn:se:liu:diva-130858 (URN)10.1108/JBIM-05-2014-0099 (DOI)000393884400006 ()
    Anmärkning

    Funding agencies: European Community [644938]

    Tillgänglig från: 2016-08-29 Skapad: 2016-08-29 Senast uppdaterad: 2020-06-05Bibliografiskt granskad
    2. Internal integration in complex collaborative product development projects
    Öppna denna publikation i ny flik eller fönster >>Internal integration in complex collaborative product development projects
    2016 (Engelska)Ingår i: International Journal of Innovation Management, ISSN 1363-9196, E-ISSN 1757-5877, Vol. 20, nr 1, s. 1-28, artikel-id 1650008Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    While the importance of internal integration for effective inter-firm collaboration with suppliers is widely acknowledged, it is presently unclear how it is achieved in complex collaborative product development projects. This paper aims to address this gap in extant knowledge by investigating the internal integration approaches and exploring related project management challenges. Specifically, three internal integration approaches are found, namely integration based on multidirectional, frequent interaction; integration based on delimited, problem-solving; and based on unidirectional, information-oriented interaction. The study findings suggest that internal integration approaches are related to the degree of uncertainty in the subsystems of the suppliers, rather than the overall product system. Consequently, in complex product development projects involving many internal functions and several different suppliers, the specific supplier tasks, rather than the overall project structure and aims, determine the mode of internal integration required. This complexity creates important challenges for organisation, and requires flexibility in internal integration approaches.

    Ort, förlag, år, upplaga, sidor
    Imperial College Press, 2016
    Nyckelord
    Internal integration, supplier involvement, task uncertainty, collaborative projects, subsystem, case study
    Nationell ämneskategori
    Företagsekonomi
    Identifikatorer
    urn:nbn:se:liu:diva-114889 (URN)10.1142/S1363919616500080 (DOI)000387132300008 ()2-s2.0-84959565960 (Scopus ID)
    Anmärkning

    The previous status of this article was Manuscript.

    Tillgänglig från: 2015-03-05 Skapad: 2015-03-05 Senast uppdaterad: 2017-12-04Bibliografiskt granskad
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  • 118.
    Falconi, Valentina
    et al.
    Politecnico di Milano.
    Sundin, Erik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska fakulteten.
    Colledani, Marcello
    Politecnico di Milano.
    Copani, Giacomo
    Institute of Industrial Technologies and Automation, CNR, Italy.
    Key success factors for implementing Upgrading Remanufacturing2017Ingår i: Proceedings of International Conference on Remanufacturing (ICoR-17), 2017, s. 33-46Konferensbidrag (Refereegranskat)
    Abstract [en]

    Increasing volume of waste in Europe, reduced availability of critical primary resources and new emerging trends towards “green” products push European manufacturers towards the implementation of ‘circular economy’. Product upgrading, i.e. the process of providing new functionalities to products through collection, disassembly/substitution and remanufacturing, could represent an effective solution to support the transition to circular economy. However, economic and environmental sustainability, legislation boundaries, industrial benefits and social impact of design for upgradability and upgrading remanufacturing are still debated in many sectors, and companies still perceive high risks in this transition.

     

    The aim of the paper is to clarify the key success factors for companies that have the willingness to include upgrading remanufacturing in their businesses. An emphasis is placed on how the application of new service-oriented business models for product upgrade and design for remanufacturing can support this implementation and bring high value-added to circular economy businesses.

     

    The methodology used to reach the aim of the paper was to map existing business approaches through a literature review focused on the existing upgrading strategies. Next, a study of real existing case studies of product upgrading was developed. Within this step, the identification of common success factors and a favourable scenario for the implementation of upgrading remanufacturing was conducted.

  • 119.
    Falk, Conny
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Blomkvist, Andreas
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Flexibla fixturer i bearbetande maskiner2008Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats
    Abstract [sv]

    Detta examensarbete har utförts vid Linköpings Universitet och Saab Aerostructures DPS i Linköping och behandlar flexibla fixturer i bearbetande maskiner. Arbetet bygger på forskningsprojektet Koordinatstyrd fixering som under en längre tid bedrivits av Linköpings Universitet tillsammans med ett antal företag.

    Examensarbetet behandlar Saab Aerostructures DPS fåstyckstillverkning där stor variation på detaljer och geometrier förekommer. Idag används ofta specialtillverkade fixturer för att hålla och lokalisera detaljerna. För att effektivisera produktionen och minska den totala fixturkostnaden per detalj kan mer flexibla fixeringsmetoder införas.

    I examensarbetet har nya flexibla fixeringsmetoder utvärderats och lagt grunden för framtagningen av tre stycken koncept. Koncepten är framtagna genom att relevant litteratur genomsökts samt genom studier på Saab Aerostructures DPS. Koncepten har sedan genomgått en urvalsprocess baserad på företagets behov och förutsättningar, vilket ger en bra grund för fortsatt utveckling av koncepten. Det koncept som anses vara bäst lämpat för Saab Aerostructures DPS bygger på en justerbar fönsterfixtur som medger att detaljer kan bearbetas i ett steg. Ett annat koncept som presenteras i rapporten är inriktad mot mer svårfixerade detaljer. Detta använder sig av en magnetchuck och justerbara element och har en mycket hög automationsgrad. Det tredje koncept som utvecklats är inte en traditionell fixturlösning men kan underlätta fastspänning av svårfixerade detaljer. Konceptet bygger på att extra material limmas på arbetsstycket för att underlätta fasthållningen av både obearbetade och halvbearbetade arbetsstycken.

    Fixturkoncepten använder sig av bearbetningsmaskinens styrsystem för att lokalisera detaljens exakta position i fixturen. Metoden för uppmätningen som används i detta arbete är "probning" vilket innebär att maskinens spindel är utrustad med en prob och mäter upp ett antal förprogrammerade punkter för att lokalisera detaljen.

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  • 120.
    Fallenius, Lotta
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Systematiskt arbetsmiljöarbete och behovet av utbildning inom H&M2007Självständigt arbete på avancerad nivå (magisterexamen), 20 poäng / 30 hpStudentuppsats
    Abstract [en]

    The purpose of this study was to make a survey of a larger company in Sweden to analyze if it complied to the stipulated Systematic Work Environment Management rules in Sweden. The company chosen was Hennes & Mauritz. The key question was to see if the company was examining and judging the risks, developing handling plans and if they were making yearly follow ups so that problems could be attended to. Further, I also wanted to examine if there was lack of competence within different departments as well as give some substantiate proposals on educations in Systematic Work Environment Management. The method used to investigate this was interviews and observations on how the Systematic Work Environment Management was handled in the company. The interview study included ten different directors of stores. The observation was made during two weeks at the headquarter following the daily work concerning the Systematic Work Environment Management from management´s point of view. The result of the study and the observation showed that in general H&M is working very well with the Systematic Work Environment Management at the store level. The local managers considered that they had sufficient knowledge but they were lacking continuous education and updates in the area. Specifically, the results showed that there is some lack of knowledge in the field of responsibility for work environment and that the local management doesn’t get the yearly education according to top management´s intention. A short suggestion on a yearly educational plan in Systematic Work Environment Management has been added to the report based on the results in the survey. A reasonable time for this education is one day per year to update the responsible local management in the area of Systematic Work Environment Management.

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  • 121.
    Farid, Amro M.
    et al.
    Masdar Institute of Science & Technology, Masdar City, Abu Dhabi, UAE.
    Ribeiro, Luis
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    An Axiomatic Design of a Multi-Agent Reconfigurable Manufacturing System Architecture2014Ingår i: Proceedings of ICAD2014 The Eighth International Conference on Axiomatic Design Campus de Caparica – September 24-26, 2014 / [ed] António M. Gonçalves-Coelho, Miguel Cavique and António Mourão, 2014, s. 51-58Konferensbidrag (Refereegranskat)
    Abstract [en]

    In recent years, the fields of reconfigurable manufacturing systems, holonic manufacturing systems, and multi-agent systems have made technological advances to support the ready reconfiguration of automated manufacturing systems.  While these technological advances have demonstrated robust operation and been qualitatively successful in achieving reconfigurability, their ultimate industrial adoption remains limited.  Amongst the barriers to adoption has been the relative absence of formal and quantitative multi-agent system design methodologies based upon reconfigurability measurement.  Hence, it is not clear 1.) the degree to which these designs have achieved their intended level of reconfigurability 2.) which systems are indeed quantitatively more reconfigurable and 3.) how these designs may overcome their design limitations to achieve greater reconfigurability in subsequent design iterations.  To our knowledge, this paper is the first multi-agent system reference architecture for reconfigurable manufacturing systems driven by a quantitative and formal design approach.  It is rooted in an established engineering design methodology called axiomatic design for large flexible engineering systems and draws upon design principles distilled from prior works on reconfigurability measurement.  The resulting architecture is written in terms of the mathematical description used in reconfigurability measurement which straightforwardly allows instantiation for system-specific application.

  • 122.
    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 analysis2008Ingår i: Operations Management Research, ISSN 1936-9735, E-ISSN 1936-9743, Vol. 1, nr 2, s. 141-149Artikel i tidskrift (Refereegranskat)
    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.

  • 123.
    Fernegård, Hans
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik.
    Automatisk plastlisthanterare2005Självständigt arbete på grundnivå (yrkesexamen), 10 poäng / 15 hpStudentuppsats
    Abstract [sv]

    Idag transporteras mycket gods på lastpallar eftersom det är praktisk och går snabbt att lasta. Den stora nackdelen med lastpallarna är att de väger mycket, är skrymmande och kostar mycket pengar. Därför har IKEA utvecklat plastlister som ska ersätta europapallen vid vissa transsporter. I det här examensarbetet beskrivs hur en plastlisthanterare konstrueras från kravspecifikation till färdig maskin. Plastlisthanterarens uppgift är att applicera plastlister under gods automatiskt. För att förenkla konstruktionsarbetet delades plastlisthanteraren upp i olika moduler.

    Examensarbetet har utförts vid Linköpings Tekniska Högskola, Institutionen för konstruktions- och produktionsteknik, och vid TEXO Application i Älmhult. TEXO Application startades 2001 av Bo Lidbom i syfte att hitta nya marknadsområden för TEXO Holding.

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  • 124.
    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-Floor2014Ingår i: Proceedings2014 12th IEEE International Conference on Industrial Informatics (INDIN), Porto Alegre, RS, Brazil 27-30 July, 2014, IEEE conference proceedings, 2014, s. 404-410Konferensbidrag (Refereegranskat)
    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.

  • 125.
    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 emergence2013Ingår i: ProceedingsIECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society,, IEEE , 2013, s. 7434-7439Konferensbidrag (Refereegranskat)
    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.

  • 126.
    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 Manufacturing2014Ingår 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. 139-148Kapitel i bok, del av antologi (Refereegranskat)
    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.

  • 127.
    Filipovic, Edin
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Analys och förbättring av materialförsörjning och lagerstyrning2011Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    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.

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  • 128.
    Forslund, Helena
    et al.
    Department of Accounting and Logistics, Linnaeus University, Växjö, Sweden.
    Björklund, Maria
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Logistik- och kvalitetsutveckling. Linköpings universitet, Tekniska fakulteten. Department of Accounting and Logistics, Linnaeus University, Växjö, Sweden.
    Lindblad, Fredrik
    Department of Accounting and Logistics, Linnaeus University, Växjö, Sweden; Business Department, Municipality of Växjö, Växjö, Sweden.
    Challenges in Closed Loop Supply Chains for Window Glass2021Ingår i: Proceedings from the 33th Nofoma conference, 2021Konferensbidrag (Refereegranskat)
    Abstract [en]

    Purpose 

    Even if glass is 100% recyclable, only 1% of window glass is currently handled in closed loop supply chains (CLSC) in Sweden, causing unnecessary environmental impact and indicating the existence of challenges. The purpose of this article is to increase the knowledge on challenges for applying closed loop supply chains (CLSC) for window glass. 

    Design/methodology/approach 

    Based upon a literature review, a first framework of challenges in different types of CLSC for window glass is developed. The challenges are complemented, elaborated and validated in two workshops with glass experts and construction stakeholders respectively, followed by interviews with experts on glass recycling. 

    Findings 

    Four different types of CLSC are identified. Many window glass CLSC design challenges in material and information flows are identified; the lack of large-scale actors, lack of general and specific knowledge, lack of business models, uncertain product quality and lack of promotion for window glass CLSC. The literature focuses more on operations and control challenges, as compared to our empirical findings. 

    Research limitations/implications 

    The developed framework structures and exemplifies challenges, which implies expanded CLSC knowledge in a specific setting. Both the model and the identified CLSC types are contributions to the CLSC literature. A research agenda is also presented. 

    Practical limitations/implications 

    Practitioners can learn from and mitigate the challenges. The research agenda indicates and assists in how. This can lead to a higher recycling rate of window glass. 

    Originality/value 

    Very limited research on CLSC for the recycling of window glass is identified, thus the study demonstrates originality.

  • 129.
    Fredriksson, Anna
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap, Kommunikations- och transportsystem. Linköpings universitet, Tekniska fakulteten.
    Jenny, Bäckstrand
    Jönköping University, Jönköping, Sweden.
    The role of supplier information availability for construction supply chain performance2022Ingår i: Production planning & control (Print), ISSN 0953-7287, E-ISSN 1366-5871, Vol. 33, nr 9-10, s. 863-874Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The lack of coordination of the construction supply chain (CSC) creates a chain of problems. The purpose of this paper is to contribute to knowledge about coordination within CSCs and how the lack thereof can impact their supply chain performance. Coordination encompasses several different mechanisms, whereof focus here have been information sharing with the unit of analysis suppliers’ information availability. Four suppliers active within the CSC, delivering to several different projects have been studied. These represent two different delivery patterns, continuous and intermittent deliveries. Based on the analysis of their information availability are two propositions made; 1) due to the loose couplings and the lack of understanding among main contractors of the value of information sharing, suppliers with continuous supply have an information advantage due to their presence on site, 2) suppliers can enhance their information availability, by increasing their service offering to customers.

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  • 130.
    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 Network2014Ingår 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. 285-306Kapitel i bok, del av antologi (Övrigt vetenskapligt)
  • 131.
    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 performanceIngår i: Production planning & control (Print), ISSN 0953-7287, E-ISSN 1366-5871Artikel i tidskrift (Refereegranskat)
    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.  

  • 132.
    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 Saab2016Ingår i: International Journal of Technology Transfer and Commercialisation, ISSN 1470-6075, E-ISSN 1741-5284, Vol. 14, nr 2, s. 132-149Artikel i tidskrift (Refereegranskat)
    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.

  • 133.
    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 production2019Ingår i: Journal of Global Operations and Strategic Sourcing, ISSN 2398-5364, E-ISSN 2398-5372, Vol. 12, nr 1, s. 151-171Artikel i tidskrift (Refereegranskat)
    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.

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  • 134.
    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 transfer2015Ingår i: Proceedings of EurOMA 2015, Neuchatel, Schweiz, 2015Konferensbidrag (Refereegranskat)
    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.

  • 135.
    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 level2014Ingår i: Strategic Outsourcing, ISSN 1753-8297, E-ISSN 1753-8300, Vol. 7, nr 2, s. 173-194Artikel i tidskrift (Refereegranskat)
    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.

  • 136.
    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 20052007Självständigt arbete på grundnivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats
    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.

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  • 137.
    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 Assembly2018Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    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.

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  • 138.
    Gabela, Asmir
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell Produktion. Linköpings universitet, Tekniska högskolan.
    Automatiserad monteringscell för tillverkning av adapterringar i kompositmaterial2013Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    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.

  • 139.
    Gauthereau, Vincent
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik. Linköpings universitet, Tekniska högskolan.
    Work Practice, Safety and Heedfulness: Studies of Organizational Reliability in Hospitals and Nuclear Power Plants2003Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    The study of safety in complex systems has focused on different issues over the past decades. This focus was often linked to the conclusions of previous accidents' / incidents' analyses. When accidents were attributed to technical causes, safety research focused on technical developments. When they were later attributed to 'human errors', safety research focused on this 'component'. And when, since the mid-eighties accidents have been attributed to 'organizational factors ', safety research has focused on these very same 'organizational factors '.

    The present thesis argues for a 'practice view' over safety to be taken. This view is mainly drawn from the field of research on High Reliability Organizations (HRO). HRO theorists' point of view on safety is that we can operate complex systems safely despite the fact that we have made them so complex that they are prone to 'normal accidents'. Humans involved in the operation of our systems actually create safety. Safety is formed through the adaptation of work practice to local conditions, and this adaptation is part of safe operation. Safety is not only a substantial quality of our socio-technical systems: the discursive dimension of safety actually seems to be a central component of safety creation. However, the adaptive ability of HRO can sometimes become their downfall. Adaptation, which is the backbone of safety, can sometimes be a drawback as well. Consequently, the practice view of safety, proposed in the present work, argues that we need to further comprehend how workpractice evolves over time, and more specifically what are the inherent characteristics of work practice that create this evolution.

    Empirical studies from health-care and nuclear power generation highlight different details about organizational reliability. For instance, one study of planning at a nuclear power plant draws our attention to the different roles of planning in the organization. Another study, within heath-care, underlines the evolution of work practice in connection with a 'minor' technological innovation.

    Finally, since understanding safety as a social practice entails an important rethinking of the roles of research in the construction of safety in complex systems, the dissertation ends with a discussion around these roles.

  • 140.
    Gideskog, Moamia
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Wide, Agnes
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Gemensamt Gränssnitt För Obemannade Enheter: En explorativ studie om framtida armburna gränssnitt inom militären för avsutten spaning i högrisksituationer för markförband2023Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Den snabba utvecklingen av autonomi och fjärrstyrning för obemannade enheter har lett till ett behov inom militären att utforska samspelet mellan användare och olika obemannade enheter, för att kartlägga behov för framtida gränssnitt. Det finns ett tydligt behov av alternativa gränssnitt till de handhållna styrdon som används i dagsläget, då dessa har visat sig ha begränsningar gällande situationsmedvetenhet och kognitiv förmåga hos operatören - något som är särskilt viktigt i högrisksituationer. Det finns vidare belägg för att ett armburet styrdon har potential att möta dessa behov hos framtida gränssnitt. Denna studie undersöker därför möjliga utformningar för ett armburet gränssnitt, och utreder hur väl konceptuella utformningar passar det specifika användningsområdet avsutten spaning i högrisksituation för markförband.

    Genomgående är fokus att genom en iterativt och användarcentrerad studie kartlägga och precisera behov samt generera konceptuella prototyper utifrån detta. Inledningsvis görs en litteraturstudie, vars resultat sammanställs i ett antal designprinciper för utformning av gränssnitt för obemannade fordon inom militära sammanhang. Principerna används vidare i idé- och konceptgenereringen samt vid framtagandet av lofi-prototyper. Lofi-prototyperna som visualiserar olika koncept för armburna gränssnitt utvärderas därefter i ett användartest med fokusdiskussioner. Detta är den första av två iterationer i användarstudien. Vidare utvecklas ett slutgiltigt helhetskoncept, vilket utvärderas i det andra användartestet. Fokus i studien har vid det här laget riktat in sig specifikt mot användningsområdet avsutten spaning i högrisksituationer för markförband, och utvärderar genom storytelling hur väl ett armburet gränssnitt passar användningsområdet.

    Resultaten från det första användartestet visar att ett armburet gränssnitt bör utformas som ett komplement till ett huvudstyrdon, samt att det är viktigt att det utformas utifrån soldatnas utrustning och miljö genom att vara litet, lätt och tåligt. Vidare visar resultatet att gränssnittet bör fokusera på mottagandet av information framför att skicka information, och att det bör utformas i syfte att ge användaren snabba, kortfattade notiser om viktig information som enkelt läses av på armen utan att soldaten behöver avbryta sina arbetsuppgifter eller lägga ned sitt vapen. Fysiska knappar, ljusdisciplin samt vibrationer som återkoppling är andra aspekter som resultatet visar är intressanta att undersöka vidare.

    Resultatet från första iterationen används för att utveckla ett slutgiltigt slutkoncept till det andra användartestet, vilken gestaltas i en prototyp i lera som visualiserar storleken på gränssnittet, likt en smartklocka, och ett antal fysiska knappar. Genom storytelling där deltagarna får ha på sig prototypen på armen och leva sig in i ett realistiskt scenario utvärderas hur väl denna typ av gränssnitt passar användaren och användningsområdet. Resultatet från det andra användartestet visar att ett litet, smidigt gränssnitt på armen som ger snabb, kortfattad information är fördelaktigt i högrisksituationer och spaningssituationer där man behöver gömma sig eller agera dolt. Gränssnittet behöver därmed inte kunna ge detaljerad information och ha avancerad interaktion, utan bör istället fungera i syfte att på ett tyst och snabbt sätt ge en varning genom exempelvis en vibration eller en symbol på skärmen. Således kan användaren få snabba, direkta alert-notiser som signalerar nivån av fara – vilket är efterfrågat i just högrisksituationer – innan man genom exempelvis radiokommunikation kan få mer detaljerad information om faran. Ett annat viktigt resultat från användarstudien är att gränssnittet inte enbart bör fokusera på information från och interaktion med obemannade enheter, utan även interaktion med människor. Det kan exempelvis vara genom att få information från en plutonchef, och kunna bekräfta mottagandet av informationen och eventuellt även kunna svara med korta, förutbestämda textmeddelanden. Detta tillsammans med resultatet om att gränssnittet bör fokusera på mottagande av information gör att studiens fokus ändras från det initiala: interaktion med obemannade enheter, till att istället fokusera på mottagande av information från andra soldater, chefer samt obemannade system.

    Slutsatser som dras är att gränssnittet bör vara utformat som ett litet, smidigt kompletterande gränssnitt på armen, som ger användaren snabba, direkta notiser med kortfattad information som exempelvis signalerar fara, för att det ska passa användningsområdet. Vidare dras slutsatsen att mängden funktioner som är autonoma i systemet påverkar både utformningen och situationsmedvetenhet, och att detta är ett komplext och till viss del motsägande område att undersöka vidare. Framtida studier anses således kunna beröra områden såsom hur mycket autonomi som är eftersträvansvärt samt hur haptisk återkoppling kan användas i högrisksituationer.

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    fulltext
  • 141.
    Gomolka, Beth
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik.
    Service Offering Uncertainty Analysis Tool2009Självständigt arbete på avancerad nivå (masterexamen), 30 poäng / 45 hpStudentuppsats (Examensarbete)
    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.

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    FULLTEXT01
  • 142.
    Gopinath, Varun
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska fakulteten.
    On Safe Collaborative Assembly With Large Industrial Robots2019Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    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.

    Delarbeten
    1. Design Criteria for a Conceptual End-effector for Physical Human-Robot Production Cell
    Öppna denna publikation i ny flik eller fönster >>Design Criteria for a Conceptual End-effector for Physical Human-Robot Production Cell
    2014 (Engelska)Ingår i: Proceedings of The 6th International Swedish Production Symposium 2014, Gothenburg: Chalmers Conferences , 2014, s. 1-7Konferensbidrag, Publicerat paper (Refereegranskat)
    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.

    Ort, förlag, år, upplaga, sidor
    Gothenburg: Chalmers Conferences, 2014
    Nyckelord
    Human-Robot Collaboration, Mixed-model assembly Line, Flexible Manufacturing.
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-123649 (URN)9789198097412 (ISBN)
    Konferens
    The 6th Swedish Production Symposium, Clarion Hotel Post September 16-18, Gothenburg, Sweden
    Projekt
    Collaborative Team of Man and Machine ToMM
    Forskningsfinansiär
    Vinnova
    Tillgänglig från: 2016-01-04 Skapad: 2016-01-04 Senast uppdaterad: 2019-11-20Bibliografiskt granskad
    2. Risk Assessment Process for Collaborative Assembly - A Job Safety Analysis Approach
    Öppna denna publikation i ny flik eller fönster >>Risk Assessment Process for Collaborative Assembly - A Job Safety Analysis Approach
    2016 (Engelska)Ingår i: 6TH CIRP CONFERENCE ON ASSEMBLY TECHNOLOGIES AND SYSTEMS (CATS), ELSEVIER SCIENCE BV , 2016, Vol. 44, s. 199-203Konferensbidrag, Publicerat paper (Refereegranskat)
    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.

    Ort, förlag, år, upplaga, sidor
    ELSEVIER SCIENCE BV, 2016
    Serie
    Procedia CIRP, ISSN 2212-8271
    Nyckelord
    Human Robot Collaboration; Risk Assessment; Safety Standards; Collaborative Assembly
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-129505 (URN)10.1016/j.procir.2016.02.334 (DOI)000376432200033 ()
    Konferens
    6th CIRP Conference on Assembly Technologies and Systems (CATS)
    Tillgänglig från: 2016-06-20 Skapad: 2016-06-20 Senast uppdaterad: 2019-11-20
    3. Safe Assembly Cell Layout through Risk Assessment: An Application with Hand Guided Industrial Robot
    Öppna denna publikation i ny flik eller fönster >>Safe Assembly Cell Layout through Risk Assessment: An Application with Hand Guided Industrial Robot
    2017 (Engelska)Ingår 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. 430-435Konferensbidrag, Publicerat paper (Refereegranskat)
    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.

    Ort, förlag, år, upplaga, sidor
    Elsevier, 2017
    Serie
    Procedia CIRP
    Nyckelord
    Human Robot Collaboration, Safety Standards, Collaborative Assembly, Hand-Guided Robot
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-142319 (URN)10.1016/j.procir.2017.03.160 (DOI)000418465500073 ()2-s2.0-85028677171 (Scopus ID)
    Konferens
    Manufacturing Systems 4.0 – Proceedings of the 50th CIRP Conference on Manufacturing Systems
    Forskningsfinansiär
    VINNOVA
    Anmärkning

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

    Tillgänglig från: 2017-10-25 Skapad: 2017-10-25 Senast uppdaterad: 2019-11-20Bibliografiskt granskad
    4. Risk Assessment for Collaborative Operation: A Case Study on Hand-Guided Industrial Robots
    Öppna denna publikation i ny flik eller fönster >>Risk Assessment for Collaborative Operation: A Case Study on Hand-Guided Industrial Robots
    2018 (Engelska)Ingår i: Risk Assessment / [ed] Valentina Svalova, London/Rijeka: InTech, 2018, s. 167-187Kapitel i bok, del av antologi (Refereegranskat)
    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.

    Ort, förlag, år, upplaga, sidor
    London/Rijeka: InTech, 2018
    Nyckelord
    Hand-guided robots, industrial system safety, collaborative operations, human-robot collaboration, risk assessment, hazards
    Nationell ämneskategori
    Maskinteknik
    Identifikatorer
    urn:nbn:se:liu:diva-145504 (URN)10.5772/intechopen.70607 (DOI)9789535137986 (ISBN)9789535140634 (ISBN)9789535137993 (ISBN)
    Tillgänglig från: 2018-03-02 Skapad: 2018-03-02 Senast uppdaterad: 2019-11-20Bibliografiskt granskad
    5. Demonstrators to support research in Industrial safety - A Methodology
    Öppna denna publikation i ny flik eller fönster >>Demonstrators to support research in Industrial safety - A Methodology
    2018 (Engelska)Ingår i: Procedia Manufacturing, E-ISSN 2351-9789, Vol. 17, s. 246-253Artikel i tidskrift (Refereegranskat) 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.

    Ort, förlag, år, upplaga, sidor
    ELSEVIER SCIENCE BV, 2018
    Nyckelord
    Collaborative robots; Industrial Safety; University-Industry Collaboration; Risk Assessment
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    Identifikatorer
    urn:nbn:se:liu:diva-158894 (URN)10.1016/j.promfg.2018.10.043 (DOI)000471035200031 ()
    Konferens
    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
    Anmärkning

    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.

    Tillgänglig från: 2019-07-16 Skapad: 2019-07-16 Senast uppdaterad: 2019-11-20
    6. Understanding situational and mode awareness for safe human‑robot collaboration: case studies on assembly applications
    Öppna denna publikation i ny flik eller fönster >>Understanding situational and mode awareness for safe human‑robot collaboration: case studies on assembly applications
    2019 (Engelska)Ingår i: Production Engineering, ISSN 0944-6524, E-ISSN 1863-7353, Vol. 13, nr 1, s. 1-9Artikel i tidskrift (Refereegranskat) 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

    Ort, förlag, år, upplaga, sidor
    Springer Berlin/Heidelberg, 2019
    Nyckelord
    Situational awareness, Mode awareness, Human-robot collaboration (HRC), Industrial safety
    Nationell ämneskategori
    Produktionsteknik, arbetsvetenskap och ergonomi
    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
    Tillgänglig från: 2019-09-17 Skapad: 2019-09-17 Senast uppdaterad: 2020-03-24Bibliografiskt granskad
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    On Safe Collaborative Assembly With Large Industrial Robots
    Ladda ner (png)
    presentationsbild
  • 143.
    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 Approach2016Ingår i: 6TH CIRP CONFERENCE ON ASSEMBLY TECHNOLOGIES AND SYSTEMS (CATS), ELSEVIER SCIENCE BV , 2016, Vol. 44, s. 199-203Konferensbidrag (Refereegranskat)
    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.

    Ladda ner fulltext (pdf)
    fulltext
  • 144.
    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 applications2019Ingår i: Production Engineering, ISSN 0944-6524, E-ISSN 1863-7353, Vol. 13, nr 1, s. 1-9Artikel i tidskrift (Refereegranskat)
    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

    Ladda ner fulltext (pdf)
    Understanding situational and mode awareness for safe human‑robot collaboration: case studies on assembly applications
  • 145.
    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 Methodology2018Ingår i: Procedia Manufacturing, E-ISSN 2351-9789, Vol. 17, s. 246-253Artikel i tidskrift (Refereegranskat)
    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.

    Ladda ner fulltext (pdf)
    Demonstrators to support research in Industrial safety - A Methodology
  • 146.
    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.
    Gustafsson, Åke
    Volvo Car Corporation, Göteborg, Sweden.
    Axelsson, Stefan
    Volvo Car Corporation, Göteborg, Sweden.
    Safe Collaborative Assembly on a Continuously Moving Line with Large Industrial Robots2021Ingår i: Robotics and Computer-Integrated Manufacturing, ISSN 0736-5845, E-ISSN 1879-2537, Robotics and Computer-Integrated Manufacturing, ISSN 0736-5845, Vol. 67, artikel-id 102048Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Robot safety standards defines Collaborative Operation as a state in which purposely designed robots work in direct cooperation with a human within a defined workspace. That is, an operator and an industrial robot complete assembly tasks at the collaborative workspace. A prerequisite to ensuring safety during all phases of operation is an understanding of the nature of hazards pertinent to collaborative systems. An automotive assembly station, where plastic panels are assembled on a continuously moving line, formed the basis for research operations meant to understand safety issues when a large industrial robot aids an operator in assembly tasks. This led to the development of a laboratory demonstrator whose design and functioning will be presented in this article. Additionally, the hazards identified during risk assessment along with measures to mitigate the associated risks will be presented in order to highlight the nature of hazards pertinent to collaborative systems.

    Ladda ner fulltext (pdf)
    fulltext
  • 147.
    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 Study2018Ingår 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. 985-992Konferensbidrag (Refereegranskat)
    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.

  • 148.
    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 Cell2014Ingår i: Proceedings of The 6th International Swedish Production Symposium 2014, Gothenburg: Chalmers Conferences , 2014, s. 1-7Konferensbidrag (Refereegranskat)
    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.

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    Design Criteria for a Conceptual End-effector for Physical Human-Robot Production Cell
  • 149.
    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 Robot2017Ingår 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. 430-435Konferensbidrag (Refereegranskat)
    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.

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    fulltext
  • 150.
    Govers, Emma
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Kreativa Produkter: En jämförelse mellan teori och praktik2008Självständigt arbete på avancerad nivå (magisterexamen), 20 poäng / 30 hpStudentuppsats
    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.

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    FULLTEXT01
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