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  • 1901.
    Zhang, Kai
    et al.
    Jinan Univ, Peoples R China.
    Qu, Ting
    Jinan Univ, Peoples R China.
    Zhou, Dajian
    Guangdong Univ Technol, Peoples R China.
    Jiang, Hongfei
    Jinan Univ, Peoples R China.
    Lin, Yuanxin
    Jinan Univ, Peoples R China.
    Li, Peize
    Jinan Univ, Peoples R China; Xian Univ Sci and Technol, Peoples R China.
    Guo, Hongfei
    Jinan Univ, Peoples R China.
    Liu, Yang
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska fakulteten. Jinan Univ, Peoples R China.
    Li, Congdong
    Jinan Univ, Peoples R China.
    Huang, George Q.
    Jinan Univ, Peoples R China; Univ Hong Kong, Peoples R China.
    Digital twin-based opti-state control method for a synchronized production Check toroperation system2020Ingår i: Robotics and Computer-Integrated Manufacturing, ISSN 0736-5845, E-ISSN 1879-2537, Vol. 63, artikel-id 101892Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The intelligent manufacturing strategy and customer demand have mutually promoted each other. Also, the production mode is shifting towards customized production, and more rental resources or services are introduced to the production system, therefore, the systems are becoming more complex. Compared with traditional production systems, such systems have some new features, this work calls this type of system as a synchronized production operation system (SPOS). Under such circumstances, production systems are influenced by more frequent uncertainties, and the planning-based production decision and control approach is no longer applicable. The opti-state control (OsC) method is proposed to help SPOS keep in an optimal state when uncertainties affect the system. Besides, a digital twin-based control framework (DTCF) is designed for getting the full element information needed for decision making. Based on the comprehensive information of the production system obtained by the DTCF, the OsC method is introduced to the virtual control layer to formulate the optimal target guiding the path of the system in real time through the dynamic matching mechanism (qualitative perspective). Then multi-stage synchronized control with analysis target cascading (ATC) method is used to get the local optimal state decisions (quantitative perspective). From both qualitative and quantitative aspects to ensure the system is under an optimal target path for optimal operation procedure. At last, a case study in a large-size paint making company in China is used to validate the effectiveness of the approach.

  • 1902.
    Zhang, Yingfeng
    et al.
    Northwestern Polytech Univ, Peoples R China.
    Liu, Sichao
    Northwestern Polytech Univ, Peoples R China; KTH Royal Inst Technol, Sweden.
    Liu, Yang
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska fakulteten. Univ Vaasa, Finland.
    Yang, Haidong
    Guangdong Univ Technol, Peoples R China.
    Li, Miao
    Northwestern Polytech Univ, Peoples R China.
    Huisingh, Donald
    Univ Tennessee, TN USA.
    Wang, Lihui
    KTH Royal Inst Technol, Sweden.
    The Internet of Things enabled real-time scheduling for remanufacturing of automobile engines2018Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 185, s. 562-575Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Typical challenges that managers of remanufacturing face are composed of the lack of timely, accurate, and consistent information of remanufacturing resources. Therefore, it is difficult to implement real-time production scheduling for the shop floor. To address this problem, the authors applied the concept of the Internet of Things to the remanufacturing of automobile engines to form an Internet of Manufacturing Things environment. Under the Internet of Manufacturing Things, an identification technology for disassembled engine parts was designed, and the real-time status of the remanufacturable resources can be monitored. Based on the captured remanufacturing information, a real-time production scheduling method was developed, and a mathematical model was developed to achieve cost reduction, dynamic management of remanufacturable resources, and energy consumption decrease. To obtain an optimal solution, a Pareto-based optimization method was used. Finally, a case study was performed to analyze the effectivity of the proposed method. The results showed that the remanufacturing cost and energy consumption were reduced by 34% and 34% respectively, and the worker load rate was more balanced. These improvements can contribute to more sustainable development and greener production within the remanufacturing industry, especially for remanufacturing of automobile engines. (C) 2018 Elsevier Ltd. All rights reserved.

  • 1903.
    Zhang, Yingfeng
    et al.
    Northwestern Polytech University, Peoples R China.
    Ren, Shan
    Northwestern Polytech University, Peoples R China.
    Liu, Yang
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Tekniska fakulteten. University of Vaasa, Finland.
    Sakao, Tomohiko
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska fakulteten.
    Huisingh, Donald
    University of Tennessee, TN USA.
    A framework for Big Data driven product lifecycle management2017Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 159, s. 229-240Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Optimization of the process of product lifecycle management is an increasingly important objective for manufacturing enterprises to improve their sustainable competitive advantage. Originally, this approach was developed to integrate the business processes of an organization and more effectively manage and utilize the data generated during lifecycle studies. With emerging technologies, product embedded information devices such as radio frequency identification tags and smart sensors are widely used to improve the efficiency of enterprises routine management on an operational level. Manufacturing enterprises need a more advanced analysis approach to develop a solution on a strategic level from using such lifecycle Big Data. However, the application of Big Data in lifecycle faces several challenges, such as the lack of reliable data and valuable knowledge that can be employed to support the optimized decision-making of product lifecycle management. In this paper, a framework for Big Data driven product lifecycle management was proposed to address these challenges. Within the proposed framework, the availability and accessibility of data and knowledge related to lifecycle can be achieved. A case study was presented to demonstrate the proof-of-concept of the proposed framework. The results showed that the proposed framework was feasible to be adopted in industry, and can provide an overall solution for optimizing the decision-making processes in different phases of the whole lifecycle. The key findings and insights from the case study were summarized as managerial implications, which can guide manufacturers to ensure improvements in energy saving and fault diagnosis related decisions in the whole lifecycle. (C) 2017 Elsevier Ltd. All rights reserved.

  • 1904.
    Zhang, Yingfeng
    et al.
    Northwestern Polytech University, Peoples R China.
    Wang, Jin
    Northwestern Polytech University, Peoples R China.
    Liu, Yang
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling. Linköpings universitet, Tekniska fakulteten. University of Vaasa, Finland.
    Game theory based real-time multi-objective flexible job shop scheduling considering environmental impact2017Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 167, s. 665-679Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Production scheduling greatly contributes to optimising the allocation of processes, reducing resource and energy consumption, lowering production costs and alleviating environmental pollution. It is an effective way to progress towards green manufacturing. With the extensive use of the Internet of Things in the manufacturing shop floor, a huge amount of real-time data is created. A typical challenge is how to achieve the real-time data-driven optimisation for the manufacturing shop floor to improve energy efficiency and production efficiency. To address this problem, a dynamic game theory based two-layer scheduling method was developed to reduce makespan, the total workload of machines and energy consumption to achieve real-time multi-objective flexible job shop scheduling. To obtain an optimal solution, a sub-game perfect Nash equilibrium solution was designed. Then, a case study was employed to analyse the performance of the proposed method. The results showed that the makespan, the total workload of machines and energy consumption were reduced by 4.5%, 8.75%, and 9.3% respectively. These improvements can contribute to sustainable development and cleaner production of manufacturing industry. (C) 2017 Elsevier Ltd. All rights reserved.

  • 1905.
    Zhang, Yingfeng
    et al.
    Northwestern Polytech University, Peoples R China; Northwestern Polytech University, Peoples R China.
    Zhang, Geng
    Northwestern Polytech University, Peoples R China.
    Qu, Ting
    Jinan University, Peoples R China.
    Liu, Yang
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Jinan University, Peoples R China; University of Vaasa, Finland.
    Zhong, Ray Y.
    University of Auckland, New Zealand.
    Analytical target cascading for optimal configuration of cloud manufacturing services2017Ingår i: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 151, s. 330-343Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Combining with advanced technologies (e.g., cloud computing, Internet of Things, and service-oriented technology), cloud manufacturing was proposed and gained wide attention. By managing a huge amount of distributed and idle manufacturing resources to meet various manufacturing requirements, cloud manufacturing provides sustainable means for promoting cleaner production. Manufacturing service configuration plays an important role in implementing cloud manufacturing. Most research adopted central optimization methods to get optimal service configuration results. However, these all-in-one methods with an individual decision model can hardly maintain the autonomous decision rights of different service providers. Consequently, service providers may lose their flexibility to achieve private decision objectives, which is unfavorable for keeping the sustainable competitive advantages of enterprises. In this paper, a decentralized decision mechanism named analytical target cascading is introduced to solve the manufacturing service configuration problem. An analytical target cascading model for the manufacturing service configuration problem is proposed based on the hierarchical structure of cloud manufacturing system. Elements in the proposed model are formulated and solved in a loose coupling and distributed manner. The situation when alternative service providers owned autonomous decision rights to configure their respective upstream manufacturing stages is also considered. A case study is employed to verify the effectiveness of analytical target cascading in solving the manufacturing service configuration problem. It shows that analytical target cascading can not only obtain the same manufacturing service configuration results as central optimization method but also maintain the autonomous decision rights of different service providers. (C) 2017 Elsevier Ltd. All rights reserved.

  • 1906.
    Zhou, Yang
    et al.
    Chinese University of Hong Kong, Peoples R China.
    Wang, Feng
    Linköpings universitet, Institutionen för fysik, kemi och biologi, Biomolekylär och Organisk Elektronik. Linköpings universitet, Tekniska fakulteten.
    Cao, Yu
    Nanjing Technical University, Peoples R China.
    Wang, Jian-Pu
    Nanjing Technical University, Peoples R China.
    Fang, Hong-Hua
    Zernike Institute Adv Mat, Netherlands.
    Antonietta Loi, Maria
    Zernike Institute Adv Mat, Netherlands.
    Zhao, Ni
    Chinese University of Hong Kong, Peoples R China.
    Wong, Ching-Ping
    Chinese University of Hong Kong, Peoples R China.
    Benzylamine-Treated Wide-Bandgap Perovskite with High Thermal-Photostability and Photovoltaic Performance2017Ingår i: ADVANCED ENERGY MATERIALS, ISSN 1614-6832, Vol. 7, nr 22, artikel-id 1701048Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Mixed iodide-bromide organolead perovskites with a bandgap of 1.70-1.80 eV have great potential to boost the efficiency of current silicon solar cells by forming a perovskite-silicon tandem structure. Yet, the stability of the perovskites under various application conditions, and in particular combined light and heat stress, is not well studied. Here, FA(0.15)Cs(0.85)Pb(I0.73Br0.27)(3), with an optical bandgap of approximate to 1.72 eV, is used as a model system to investigate the thermal-photostability of wide-bandgap mixed halide perovskites. It is found that the concerted effect of heat and light can induce both phase segregation and decomposition in a pristine perovskite film. On the other hand, through a postdeposition film treatment with benzylamine (BA) molecules, the highly defective regions (e.g., film surface and grain boundaries) of the film can be well passivated, thus preventing the progression of decomposition or phase segregation in the film. Besides the stability improvement, the BA-modified perovskite solar cells also exhibit excellent photovoltaic performance, with the champion device reaching a power conversion efficiency of 18.1%, a stabilized power output efficiency of 17.1% and an open-circuit voltage (V-oc) of 1.24 V.

  • 1907.
    Zhuang, Shengnan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Mekanik. Linköpings universitet, Tekniska högskolan.
    Gearbox housing topology optimization with respect to gear misalignment2012Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Structural topology optimization methods have existing and been improving theoretically since 1980s; however, in industry, with respect to the certain conditions, proper modification is always desired. This study develops a specific method to utilize topology optimization for gearbox housing design. Gearbox housing maintains the position of the shafts to ensure the precision of gear engagement in all operational states (Naunheimer, et al., 2010). The current housing design processing used in Vicura AB, a Swedish powertrain company, is able to achieve stiff optimal housing material distribution, but difficult to fulfil gear misalignment requirement. This work overcomes the above shortages to develop a new methodology for gearbox housing topology optimization concerning the gear misalignment as well. The paper is starting with an introduction of the previous method and its defects, followed by a discussion of three possible improvements. Only one of them is feasible and two main difficulties need to be resolved to make it applicable. One of the difficulties is finding a linear assumption of the non-linear components and the other is deriving an approach for topology optimization involving both external forces and non-zero prescribed displacements. The corresponding solutions are described subsequently in detail both theoretically and practically. Then the results by implementing the new method and also the comparison with the results getting from the old method are presented. Finally, a validation of the new method is discussed and the conclusions and comments are given.

    Ladda ner fulltext (pdf)
    Master thesis
  • 1908.
    Åhsberg, Tobias
    et al.
    Linköpings universitet, Institutionen för teknik och naturvetenskap.
    Ledin, Jonatan
    Linköpings universitet, Institutionen för teknik och naturvetenskap.
    Övergång till Europastandard inom geoteknik2010Självständigt arbete på grundnivå (högskoleexamen), 10,5 poäng / 16 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Den första januari 2011 blir den Svenska övergången till Eurocode inom Geoteknik mer definitiv i samband med att Boverket antar det nya regelverket. Geotekniska handläggare och fält-/labtekniker får i och med övergången ett nytt ramverk för rapportering och redovisning att arbeta efter. Den nya standarden kommer leda till en förbättrad kvalité på arbetet då kraven på redovisningens innehåll samt tillgänglighet ökar. Den kommer även befrämja den fria marknaden, både nationellt och internationellt. Det rapporteringssystem som i dagsläget används kommer ersättas av ett nytt som innefattar fem olika dokumenttyper. Dessa dokumenttyper är:

    1. Underlagsrapport
    2. Försöksrapport
    3. Markteknisk undersökningsrapport
    4. Projekterings PM
    5. Förfrågningsunderlag.

    Innehållet i de nya rapporttyperna knyter i många avseenden an till innehållet i de som används idag. Den nya rapporteringsmodellen ställer dock ur ett dokumenteringsperspektiv högre krav på handläggare och tekniker. Modellen kommer provocera fram en mer detaljerad och innehållsrik kommunikation mellan fält, laboratorium och kontor. Tanken är att personer som inte varit inblandade i ett projekts tidigare skeden skall kunna ta till sig alla förutsättningar med hjälp av de nya dokumenten. Mer ansvar kommer läggas på lab-/fälttekniker vad avser kvalitet och dokumentation i projektens undersökningsfas. För att man från fält och lab. skall kunna ta fram rätt underlag till fortsatt projektering måste handläggare tydligare precisera vilken typ av information, utöver den traditionella, som måste finnas med i resultatredovisningen. För att övergången inte i för stor utsträckning skall påverka handläggningstid och projekteringskostnad måste företagen anpassa sin verksamhet efter de nya spelregler som Eurocode medför.

    Ladda ner fulltext (pdf)
    FULLTEXT02
  • 1909.
    Åklint, Peter
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Övergripande kvalitets och kapabilitets granskning av produktionsprocessen – en implementering av SPS.: Overall Quality and Capability Study of the Production Process – an Implement of SPC.2007Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats
    Abstract [en]

    Quality was earlier only an issue for the company’s quality departments but today is the entire organization involved in quality- and improvements work. With the customers in focus, both external and internal, quality and improvement work should be integrated in the daily activities. The management shall state goals and visions together with a policy. Through participation the correct requirements for a successful work are created.

    With SPC, statistics process control, there is an opportunity to perceive variations in the process and with the correct tools make it stable. Examples of tools that can be used are the seven QC – tools and the PDCA – cycles, which are presented more detailed in the report.

    By using SPC and the information given by it, a measure of the process capability within fixed tolerances on the produced parts can be achieved.

    The analysis in this report has been made in order to verify the capability and variations in the measuring system used within a selected production sector.

    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 1910.
    Åman, Robin
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik.
    Design of an End Effector for Drilling in Automated Processes2006Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats
    Abstract [en]

    In an attempt to solve a problem concerning drilling, a project was started at the universities in Linköping and Lund. As a part of the project this thesis aims to help solve the drilling problem. The goal of this thesis is to design an end effector that will help avoid slipping when drilling. The methods used were taken from David G. Ullman’s book The Mechanical Design Process. Members involved in the project were interviewed to get an understanding of the task. With that done the concept generation phase began, resulting in several concepts. With the use of evaluation methods, such as feasibility judgment and Go/No-Go screening, a final concept emerged. All of the parts and details of the concept were designed with respect for the customers’ requirements and demands.

    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 1911.
    Öberg, Sofia
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Mekanisk värmeteori och strömningslära. Linköpings universitet, Tekniska högskolan.
    Metod för beräkning av andelen fossilt kol i avfallsbränsle2013Självständigt arbete på grundnivå (kandidatexamen), 10,5 poäng / 16 hpStudentuppsats (Examensarbete)
    Abstract [sv]

    Från år 2013 innefattas även avfallsförbränningsanläggningar i Sverige av EU:s handelssystem för utsläppsrätter, EU ETS. Handelssystem innefattar enbart de utsläpp av koldioxid som skapats vid förbränning av fossila bränslen. Hushållsavfallet samt industriavfallet, som är anläggningarnas bränsle, består av en blandning av biogena och fossila bränslen. Denna lagändring ställer nya krav på mätnoggrannheten samt redovisningen av fossilandelen av koldioxidutsläppen. I dagsläget finns ett antal metoder för att genomföra dessa mätningar men gemensamt för metoderna är den höga kostnaden som härrör mätningarna. Detta arbete är utfört på uppdrag av Tekniska verken i Linköping vilket äger och driver avfallsförbränningsanläggningar varför dessa har ett stort intresse av resultatet.

    Syftet med detta arbete är att utreda om en ny beräkningsmetod kan tillämpas samt om denna är tillförlitlig för bestämning av fossilt kol i utsläppen.

    Vid arbetets start erhölls ett värmevärdessamband. Denna ekvation skulle ligga till grund för beräkningen av andelen fossilt samt biogent bränsle i avfallet. Beräkningsmetoden skulle baseras på anläggningens befintliga driftdata.

    För att angripa problemet granskades tidigare litteratur i ämnet för att få vägledning om vilka mätparametrar samt vilka ekvationer som skulle krävas. För att göra beräkningen krävs kännedom om bränslets värmevärde samt det biogena samt fossila bränslets värmevärde. Beräkningsmetoden har med anledning av detta valts att delas in sex olika områden med tillhörande ekvationer, vilket redovisas nedan.

    • Massbalans/avfallets sammansättning
    • Värmevärdesberäkning
    • Vattenbalans/fukt i bränsle
    • Askhalt
    • Effektsamband
    • Rökgasflöde

    Beräkningsmetoden som publiceras i detta arbete kan teoretiskt fungera, men för ett tillförlitligt resultat krävs djupare studier i respektive område.

    Beräkningsmetoden kräver många mätsignaler vilket bidrar till att den totala osäkerheten i metoden blir stor. En liten förändring i mätsignalerna ger stor inverkan på metodens slutliga resultat, andelen fossilt kol i avfallet. Detta medför att metoden kräver tillförlitlig mätdata med små osäkerheter för att ge ett korrekt svar.

    Innan implementering av beräkningsmetoden sker bör metoden verifieras mot en annan känd metod, exempelvis 14C – analys.

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    Metod för beräkning av andelen fossilt kol i avfallsbränsle
  • 1912.
    Ödkvist, Magnus
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik.
    Konceptstudie av kombinerad nödgenerator-trädgårdsredskap: Concept Study of a Combined Emergency Generator-Garden tool2005Studentarbete andra terminStudentuppsats
    Abstract [sv]

    Tyngdpunkten i arbetet ligger på konceptutveckling av en produktidé som docent Bengt Magnuson fick under våren 2005 i samband med stormen Gudrun. Med en strömförsörjande basenhet kan man dels klara sig genom ett strömavbrott och dels kan produkten få andra användningsområden genom att moduler med olika egenskaper, som t.ex. gräsklippare eller snöslunga, kan fästas på basenheten.

    Enligt produktidén skall basenheten vid allmänt strömavbrott kunna producera tillräcklig effekt för kyl, frys, TV och några glödlampor. I dagligt bruk skall basenheten kunna användas som t.ex. en gräsklippare genom att en modul med denna funktion är påmonterad. Med fler användningsområden skall idén förhoppningsvis locka dem, som inte har ett reservaggregat, att köpa denna produkt.

    Arbetet avgränsades såtillvida att generatoraggregatets konstruktion inte tas upp, då sådana system finns. Befintliga el-generatorer får stå som mall för basenhetens egenskaper angående mått, vikt och effekt. Någon kundundersökning ingår inte heller, eftersom föreliggande arbete får ses som framtagning av ett underlag för en sådan.

    Under utvecklingen togs det fram fem konceptidéer som jämfördes med varandra för att man slutligen skulle komma fram till en lösning. Denna lösning jämfördes med alternativa lös-ningar, vilka togs fram under den kritiska granskningen av produktidén.

    Det resultat som framkom var att produkten inte skulle få gensvar hos kunder med tanke på att den antagna vikten skulle anses alltför hög. Även om vikten kunde reduceras genom att generatorenheten görs lättare, var två alternativa lösningar bättre. Den ena innebär att en el-generator placeras på en modifierad gräsklippare med en extra utgående axel. Den andra inne-bär att sortimentet i ett befintligt system utökas med en generator, där samma motor kan flyttas mellan olika produkter.

    Slutsatsen är att man inte skall fortsätta att utveckla produktidén utan inrikta sig på en av de alternativa lösningarna och genomföra en kundundersökning av denna. Behovet av en extra elförsörjningsmöjlighet finns trott allt hos många människor utanför storstäderna.

    Ladda ner fulltext (pdf)
    FULLTEXT01
  • 1913.
    Ödling, Mattias
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska fakulteten.
    How Provider Value is Perceived in regards to Integrated Product Service Offerings and why: A case study2015Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    As companies grow larger and become more international, it is likely that it comes to a point where it would be cheaper to produce on site, or at least have distribution centers, rather than having a centralized production that requires long range shipping. As this occurs, there is a wide range of challenges that the company must face, however these challenges are by now well documented and while not to be underestimated and called “easy” it is nothing new as a wide range of companies have done it before. One aspect that however is less known is the influence that external differences has, in other words factors that would produce a differing result even with the exact same internal setup, on the perceived aspects (referred to as Values in this work) from the providers point of view. In particular what is interesting is the perceived positive impacts above expectations that is gained from having external differences. To be able to better understand and quantify this impact the term “Provider Value” has been created and is being researched towards understanding what Values exist and how they are being affected.Provider Value (PV) is a cutting edge concept within eco-design research that this work is based on and in particular ProVa – Provider Value Evaluation for Integrated Product Service Offerings (Matschewsky et al. 2015) is the latest step to date towards creating the tools needed to increase the utilization, and reap the benefits, of PVs. Another interesting and relevant aspect to PV is how Product/Service System (PSS) could be an essential part in paving a new way of avoiding increased environmental impact while having economic growth. This is done by adding services on top of already existing products (Sakao et al. 2009).To find out more about what kind of external factors that might be behind the differences a case study was conducted, interviewing employees at two companies within one concern in Sweden and Japan. The results of this work indicates that if the company want its PVs to remain the same the main obstacle is external economic differences. In this particular study it is also clear that differences in business model and company structure has a big impact. With all the discussion regarding environment it was on a surprisingly low level of interest at both companies and what mattered was that the products cleared the minimum requirements, nothing more, as “any additional return is hard to estimate”. If PV keeps growing and tools are made to assist, this could not only help simplify the transitioning to other countries and help utilizing existing Values from the start, it could also increase the utilization in general, in particularly in regards to the Environment.

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  • 1914.
    Öfverstedt, Tomas
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Östberg, Johan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion.
    Alternative Cooling and Mounting Concepts for Transition Duct in Industrial Gas Turbines at Siemens Industrial Turbomachinery AB2011Självständigt arbete på avancerad nivå (magisterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Gas turbine development is constantly moving forward and for higher efficiency hotter turbine inlet temperature is required. Because of that, one of the largest design problems is to find efficient ways to cool the hot parts in the gas turbine. This master thesis at Linköping University has been written at Siemens Industrial Turbomachinery AB in Finspång. The task was to develop and evaluate new alternative cooling and mounting concepts for a transition duct in Siemens latest gas turbine, SGT-750. Transition duct is a hot part and have the task to guide the hot gas from the combustion chamber to the turbine inlet in a gas turbine.

    The transition duct of today is cooled by a relative large amount of compressor air which needs to be reduced in case of a power upgrade. The current mounting solution requires three combustion chambers to be removed for one transition duct maintenance, which is time consuming.

    A literature study and a market research including patent searches was made to get an overview of solutions used today. Concept was then generated from function/means tree together with morphology matrixes. This was divided in two branches, one for cooling and one for mounting and sealing. The concepts were evaluated with Go-/no go screening, datum method and weighted objectives method. Further development and combination of the concepts led to different concept suggestions which will ease and shorten the maintenance and reduce the cooling air consumption with kept material temperature.

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  • 1915.
    Öhrblad, Henrik
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Berglund, Henrik
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Component Meshing Methodology2008Självständigt arbete på avancerad nivå (magisterexamen), 20 poäng / 30 hpStudentuppsats
    Abstract [en]

    In order to achieve results that are reliable when using the finite element method one has to use an acceptable element mesh with respect to the shape and size of the elements. As a help to produce an acceptable mesh there are quality criteria that must be fulfilled in most pre-processors.

    One objective with this thesis is to perform a sensitivity study that can be used as a basis for a Mesh guideline for chassis parts which is requested from engineers at Volvo 3P. The software used in the sensitivity study is ANSA as pre-processor, Nastran as solver and Metapost as post-processor.

    In the first part of the sensitivity study three different models are used for studying quality criteria such as aspect ratio, skewness, mid point alignment, mid point deviation and element size. Solid elements of second order, which are used in the three models, can be generated in two ways, which constitutes another part of the sensitivity study. They may either be generated from the beginning or can be converted from first order elements. This means geometrically that if second order elements where generated from the beginning the element mesh would follow the shape of the component in a better way compared to the other method.

    Recently a pre- and post-processing program called SimLab was introduced on the market. Since SimLab supports geometry import from several CAD-systems without loss of feature information, the automatic element mesh generation is supposed to be better as the mesh generator has access to more information concerning the geometry. An evaluation of SimLab is the second major objective of the thesis. More specifically, the evaluation concerns the possibility of using the software at Volvo 3P.

    Results show a surprising insensitivity regarding the criteria and that the method of generating second order elements from the beginning is to be preferred. SimLab is a new program with big potential and the conclusion is that it is possible to use it at Volvo 3P.

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    FULLTEXT01
  • 1916.
    Öhrn, Viktor
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Sjöblom, Mikael
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling.
    Underhållskoncept: tillståndsbaserat underhåll på smörj- och hydrauloljesystem2008Självständigt arbete på grundnivå (kandidatexamen), 10 poäng / 15 hpStudentuppsats
    Abstract [sv]

    Sammanfattning

    Denna rapport beskriver vårt tio veckor långa examensarbete som är den avslutande delen i vår maskiningenjörsutbildning. Arbetet har utförts vid serviceavdelning på Siemens Industrial Turbomachinery AB (Siemens). Siemens som ligger i Finspång tillverkar, säljer och servar ång - och gasturbinanläggningar över hela världen.

    Syftet med arbetet är att hjälpa Siemens att utveckla sina serviceprogram för två av de kringsystem som ingår i en ångturbinanläggning, dessa är smörj- och hydrauloljesystem.

    Arbetet är avgränsat till två av Siemens serviceprodukter, No Stop Check (NSC) och Säkerhetsinspektion (SI). Även vissa delar av de större revisionerna har undersökts.

    I arbetet har olika underhållsfilosofier undersökts och utvärderats. Fokus har riktats mot att undersöka möjligheter att utföra underhållsåtgärder med turbinanläggningen i drift. I och med den höga kapacitet dagens ångturbinanläggningar har blir de ekonomiska förlusterna enormt stora vid ett eventuellt produktionsbortfall.

    Under arbetets gång har många diskussioner och intervjuer ägt rum. Information har också inhämtats genom dokument, böcker och Internet. En så kallad Failure Mode and Effect Criticality Analysis (FMECA) har också legat till grund för arbetet när metoder och åtgärder för underhållet diskuterats.

    Siemens nuvarande underhåll är till stor del erfarenhets- och tidsbaserat. Vi har försökt att applicera ett mer tillståndsbaserat underhåll och därför har mycket tid ägnats åt att hitta metoder att tillståndskontrollera utrustningen med.

    Arbetet har genererat ett flertal olika rekommendationer på underhållsaktiviteter som är tillståndsbaserade och anpassade för Siemens turbinanläggningar. Tanken är att dessa förslag ska användas i det fortsatta underhållsarbetet och dessutom väcka idéer till fortsatt utveckling av tillståndsbaserat underhåll.

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  • 1917.
    Öhrwall Rönnbäck, Anna
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell marknadsföring och industriell ekonomi. Linköpings universitet, Tekniska högskolan.
    Collaborative Innovation for Entering Emerging Markets2010Ingår i: Proceedings of the 3rd ISPIM Innovation Symposium: Managing the Art of Innovation: Turning Concepts into Reality / [ed] Huizingh K.R.E., Conn S., Torkkeli M. and Bitrain I., ISPIM , 2010Konferensbidrag (Refereegranskat)
    Abstract [en]

    The aim of this paper is to investigate collaborative innovation in business networks for small environmental technology companies entering an emerging market (EM). Export of environmental technology solutions to emerging economies involves high investment opportunities and high growth potential, but also high risk. For example, large-scale demonstrator equipment proving the function of the environmental technology solution might be needed, which usually requires cooperation between several companies and supporting actors. Results from empirical studies presented in this paper confirm the difficulties to export environmental technology solutions to EMs for small and medium-sized enterprises (SMEs). Collaboration in business networks appears to be an efficient means to take on larger assignments, and business models built on principles of product service systems (PSS) where the technology can be integrated, and functionality is of main focus. A preliminary business development process model for small firms’ environmental technology export to EMs is developed and presented.

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  • 1918. Beställ onlineKöp publikationen >>
    Öhrwall Rönnbäck, Anna
    Linköpings universitet, Ekonomiska institutionen. Linköpings universitet, Filosofiska fakulteten.
    Interorganizational IT Support for Collaborative Product Development2002Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    As product complexity increases and markets become more global, companies tend to collaborate with customers, suppliers and partners in business process activities previously carried out within a single firm. This is observed notably also in product development. Product development is an information and communication intense activity, and collaborative product development requires efficient communication between the participating firms, both during an ongoing project and afterwards when the product is in service. When more than one firm is involved, questions linked to business aspects regarding what information to share and how to communicate the information between the firms become important. With changing partners and competing supply chains this is a delicate management issue.

    The objective of this dissertation is to assess characteristics of communication in collaborative product development, in order to identify requirements for supporting IT tools.

    Empirically, the research was conducted in two parts. Part I was conducted in the aircraft industry, where a systems integrator firm’s relationship to its major suppliers was investigated. In Part II, collaborative product development between a buyer and several suppliers organized in networks was investigated. These studies were complemented with studies of IS/IT development and implementation projects. Theoretically, it is based on the literature on product development, supply chain management, and IT support for business relationships.

    Concerning the buyer-supplier dyad it was found that there was not one collaborative product development process in common between the firms, but rather coordination between the firms’ processes. Concerning the relationship between buyer and supplier network, it was found that one of the suppliers represents the network in a dyadic buyer-supplier relationship. Within the supplier network, the firms conducted interorganizational integrated product development, which means that the functions were represented by several firms. This implied that management practices must respect the special characteristic of small and medium-sized firms in collaboration.

    The investigation of information and communication in collaborative product development in dyads and networks led to a list of requirements on IOIS. The findings were concluded in a matrix that presents characteristics of product development in general, product development in dyads, and product development in supplier networks, and a mapping of the requirements on IOIS.

    Since the business relationship is the major difference between product development in-house and collaborative product development, it was considered appropriate to take a supply chain view on the requirements for an IOIS. It was found that support is needed both for the procurement and the product development process. Moreover, it was found that project management support can significantly improve the efficiency of the development process. Improvements of the effectiveness regard support for the product life cycle, and for the long-term relationship between the parties.

    It was concluded that an IOIS for collaborative product development should be based on standard technology and support standard formats, in order to make it possible for a firm to simultaneously manage its own systems and proprietary information, and exchange information with partners when needed. 

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  • 1919.
    Öhrwall Rönnbäck, Anna
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell marknadsföring och industriell ekonomi. Linköpings universitet, Tekniska högskolan.
    Janhager, Jenny
    Royal Institute of Technology, Stockholm.
    Abdullah, M Ailieen
    Royal Institute of Technology, Stockholm.
    Enhancing the prospects for entering emerging markets via business networks2010Ingår i: Proceedings of the XXI ISPIM Conference / [ed] Ian Bitran, ISPIM , 2010Konferensbidrag (Övrigt vetenskapligt)
    Abstract [en]

    Multiple factors affect a company’s ability to enter a foreign market. Despite the challenges faced by SMEs, it is suggested that emerging markets (EM) possess high investment potential, thus should seriously be considered as new markets for Swedish environmental technology companies. Researchers within the field of internationalization activities suggest that psychic distance and experiential learning heavily affect market selection. This paper is based upon a case study of four companies that unite in a joint venture with the purpose of developing and constructing a complete plant in an EM based on a radical technology innovation. Of importance to the network partners is the knowledge shared between them for the purpose of successful commercialization, and also knowledge that enhances the prospects for companies to consider EM for their business.

  • 1920.
    Öhrwall Rönnbäck, Anna
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell marknadsföring och industriell ekonomi. Linköpings universitet, Tekniska högskolan.
    Risberg, Per
    Saab Combitech.
    Att leda högteknologiska innovationsföretag: Erfarenheter från Combitech 1977-19972009Bok (Övrig (populärvetenskap, debatt, mm))
    Abstract [sv]

    Per Risberg skapade Combitech-gruppen och var dess koncernchef i 20 år. Genom detta hade han en unik erfarenhet av att starta och driva fram tillväxt av teknikbaserade nya företag. Ur SAAB-koncernens huvudsakligen militära verksamhet, med en både bred och djup teknikbas, initierade Per nya kompetensområden och byggde upp en grupp mindre, applikationsfokuserade, självständiga men helägda bolag, som tillsammans bildade Combitech-gruppen. Gruppen utvecklades framgångsrikt under Pers ledarskap, och bidrog till ökat värdeskapande och ökad tillväxt.

    I VINNOVAs arbete är tillväxt i mindre företag ett viktigt fokus. För VINNOVA-anställda som arbetar med teknikbaserade nya företag är det mycket värdefullt att ta del av Pers erfarenheter från Combitech-tiden. Det blev därför mycket uppskattat när Per lovade att berätta om sina erfarenheter inom ramen för en serie om sju heldagsseminarier för VINNOVAs anställda.

    I denna seminarieserie, som löpte under åren 2007-2008, delade Per, på ett öppet, utförligt och

    personligt sätt, med sig av sina kunskaper och erfarenheter. Hans insikter grundar sig på upplevelser av både med- och motgång, och lockade åhörarna till både eftertänksamhet och många goda skratt.

    Pers berättelse är nu dokumenterad i denna sammanfattande skrift, förtjänstfullt nedtecknad av Tekn dr. Anna Öhrwall Rönnbäck. Berättelsen utgår från ett antal konkreta fallbeskrivningar som underbygger hans slutsatser och reflektioner, organiserade under ett antal teman.

    Vi vill hävda att Per hade en unik erfarenhet av att bygga upp ny teknikbaserad affärsverksamhet samt att han utvecklade ett spännande framgångskoncept med Combitech-gruppen. Att på detta sätt få möjlighet att ta del av och dokumentera dessa erfarenheter har stort värde. Vi känner stor och djup tacksamhet till Per för att han på ett engagerat och pedagogiskt sätt delade med sig av sina kunskaper. 

    VINNOVA hoppas och tror att du som läsare kan få inspiration och vägledning kring vilka faktorer som är avgörande för att ett teknikbaserat nytt företag skall lyckas. Det är också vår förhoppning att innehållet ska stimulera till diskussion och bidra till att ge såväl VINNOVAs medarbetare som VINNOVAs bidragsmottagare, samt övriga läsare, en ökad kännedom kring, och förståelse för frågeställningar som är väsentliga i vårt gemensamma arbete med att främja och skapa hållbar tillväxt.

  • 1921.
    Ölund, Fredrik
    Linköpings universitet, Institutionen för konstruktions- och produktionsteknik.
    San Pedro S.A.: Taking the first step to a safer work environment2006Självständigt arbete på avancerad nivå (magisterexamen), 20 poäng / 30 hpStudentuppsats
    Abstract [en]

    As a part of improving the production, the Bolivian door manufacturer San Pedro S.A. needs to develop their level of industrial safety. Today their safety level is considered to be almost non-existing. Together with CADEFOR, San Pedro wishes for a handbook that show them how to work with industrial safety, how to implement it and were to begin.

    Much needs to be done at San Pedro and the task has been to show both them and CADEFOR which parts San Pedro need to focus on to increase the overall safety.

    It is considered important that they chose to start with the most crucial areas but the aim is that they will, during a period of time, attend to all problem areas mentioned.

    The first thing San Pedro needs to do is to form an aim for the safety work. This means setting up a policy and routines for the ongoing work.

    Secondly they should start working with improving the fire security, informing the personal about the risks they are exposed to. Further they should educate attendants in first aid, use the protection on the machines available and create a better luminosity environment.

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  • 1922.
    Ölvander, Johan
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska högskolan.
    Feng, X.
    ABB Corporate Research, Västerås, Sweden.
    Holmgren, B.
    ABB Corporate Research, Västerås, Sweden.
    Optimal kinematics design of an industrial robot family in 2008 Proceedings of the ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, DETC 2008, vol 1, issue PART B, pp 777-7872009Ingår i: ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference: Volume 1: 34th Design Automation Conference, Parts A and B, The American Society of Mechanical Engineers (ASME) , 2009, Vol. 1, nr PART B, s. 777-787Konferensbidrag (Refereegranskat)
    Abstract [en]

    Product family design is a well recognized method to address the demands of mass customization. A potential drawback of product families is that the performance of individual members are reduced due to the constraints added by the common platform, i.e. parts and components need to be shared by other family members. This paper presents a formal mathematical framework where the product family design problem is stated as an optimization problem and where optimization is used to find an optimal product family. The object of study is kinematics design of a family of industrial robots. The robot is a serial manipulator where different robots share arms from a common platform. The objective is to show the trade-off between the size of the common platform and the kinematics performance of the robot.

  • 1923.
    Ölvander, Johan
    et al.
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska högskolan.
    Tarkian, Mehdi
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska högskolan.
    Feng, Xiaolong
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Maskinkonstruktion. Linköpings universitet, Tekniska högskolan.
    Multi-objective Optimization of a family of Industrial Robots2011Ingår i: Multi-objective Evolutionary Optimisation for Product Design and Manufacturing / [ed] Wang L., Ng A. H.C., Deb K., Springer Verlag , 2011, s. 189-217Kapitel i bok, del av antologi (Refereegranskat)
    Abstract [en]

    With the increasing complexity and dynamism in today’s product design and manufacturing, more optimal, robust and practical approaches and systems are needed to support product design and manufacturing activities. Multi-objective Evolutionary Optimisation for Product Design and Manufacturing presents a focused collection of quality chapters on state-of-the-art research efforts in multi-objective evolutionary optimisation, as well as their practical applications to integrated product design and manufacturing. Multi-objective Evolutionary Optimisation for Product Design and Manufacturing consists of two major sections. The first presents a broad-based review of the key areas of research in multi-objective evolutionary optimisation. The second gives in-depth treatments of selected methodologies and systems in intelligent design and integrated manufacturing. Recent developments and innovations in multi-objective evolutionary optimisation make Multi-objective Evolutionary Optimisation for Product Design and Manufacturing a useful text for a broad readership, from academic researchers to practicing engineers.

  • 1924.
    Österberg, Ouliana
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Industriell miljöteknik. Linköpings universitet, Tekniska högskolan.
    Kartläggning av en fastighets miljöpåverkan: Livscykelanalys av flerfamiljsfastigheten "Teodoliten"2012Självständigt arbete på avancerad nivå (masterexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
    Abstract [en]

    Today's climate and environmental issues have now been up for discussion for quite long. Various environmental measures have been taken, but it is not always certain that those measures actually are for the better because of the complexity of our environment. Therefore, studies of whole life cycles are very important even if they are time and resource intensive.

    Real estate accounts for 15% of global carbon emissions, but also affects our environment in many other aspects. In Sweden this number is even higher. About 30 % of its carbon dioxide emissions originates from building sector and changes are therefore of great importance. ByggVesta is a real estate company that wants to be at the forefront when it comes to eco-smart construction and wanted to know how well they are doing. It was therefore desired to conduct this LCA that reviewed their (by February 2012) newest completed property "Teodoliten" in Farsta, Stockholm.

    This life cycle assessment was a screening LCA i.e. it was carried out very superficially in order to identify the biggest polluters. All results were related to the functional unit of 1m2 floor area and year. It was found that the maintenance phase was the most pollutant one because of use of electricity and water. Here it can be mentioned that the electricity consumption is of Swedish electricity mix-type, which is much cleaner than many of the European mixes. It is therefore possible that the results may have been different if Teodoliten had been placed at another location.

    Among all the materials in the property, it was found that concrete elements were the worst pollutants. This report has, however, showed that the longer expected life time, the better this concrete frame is in comparison to wooden frame. If the property will be standing for 100 years, it will emit 95 % of the carbon dioxide- eqv. compared to a wooden frame that stands for only 60 years (the amount that is feasible for a wooden framed house). Although the climate aspect is the most focused one, the other environmental aspects show more clearly the benefits of concrete in long time perspective.

    ByggVesta has also been criticized for their shipments of concrete over the Baltic Sea. However, it has been shown that the transport with a cargo ship corresponds to only 23km by truck. Transport itself is therefore not considered to be a major subject for criticism. Latvian concrete production is of greater interest since the manufacturing process there might differ a lot from Swedish production and have other impact on environment. This issue could not be considered within the scope of this work.

    Shortly, this analysis shows that concrete frames and transportation with cargo ship is preferable if a building like Teodoliten is considered, with its geographical location and if its lifetime will last for 100 years as ByggVesta predicts. However, to be fully sure of the accuracy of these results it might be good to conduct a full comparative LCA on construction materials.

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  • 1925. Beställ onlineKöp publikationen >>
    Östlin, Johan
    Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, Monteringsteknik. Linköpings universitet, Tekniska högskolan.
    On Remanufacturing Systems: Analysing and Managing Material Flows and Remanufacturing Processes2008Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    The aim of remanufacturing is to retrieve a product’s inherent value when the product no longer fulfils the user’s desired needs. By taking advantage of this inherent value through different product recovery alternatives, there is a potential for both economically and environmental advantageous recovery of products.

    Remanufacturing is a complex business due to the high degree of uncertainty in the production process, mainly caused by two factors: the quantity and the quality of returned products. These factors have implications both on the external processes, e.g. coordinating input of returned products with the demand for remanufactured products, as well as the internal processes that coordinates the operations within the factory walls. This additional complexity needs to be considered when organising the remanufacturing system.

    The objective of this dissertation is to explore how remanufacturing companies can become more competitive through analysing and managing material flows and remanufacturing processes.

    The first issue discussed in this dissertation is the drivers that make companies interested in remanufacturing products in the first place. The conclusion is that the general drivers are profit, company policy and the environmental drivers. In a general sense, the profit motivation is the most prevalent business driver, but still there are situations where this motivation is secondary to policy and environmental drivers. Secondly, the need to balance the supply of returned products with the demand for remanufactured products shows that the possible remanufacturing volumes for a product are dependent on the shape of the supply and demand distributions. By using a product life cycle perspective, the supply and demand situations can be foreseen and support is given on possible strategies in these different supply and demand situations. Thirdly, how used products are gathered from customers is categorised by seven different customer relationship types. These types all have different effects on the remanufacturing system, and the characteristics of these relationships are disused in detail.

    When considering the remanufacturing process within the factory walls, a generic remanufacturing process was developed that divides the remanufacturing process into five different phases; pre-disassembly, disassembly, reprocessing, reassembly and the post-assembly phase. These different phases are separated by three different key decision points in the process that also have a major impact on the material planning of the process. For the remanufacturing material planning and production planning, the possibility to apply lean principles can be difficult. One foundation for implementing lean principles in new production is the existence of standardised processes that are stable and predictable. In the remanufacturing system, the possibilities to realise a predictable process is limited by the “normal” variations in quantity and the quality of the returned cores. Even though lean principles can be problematic to implement in the remanufacturing environment, this dissertation proposes a number of solutions that can be used to make the remanufacturing process leaner.

    Delarbeten
    1. Business drivers for remanufacturing
    Öppna denna publikation i ny flik eller fönster >>Business drivers for remanufacturing
    2008 (Engelska)Ingår i: Proceedings of CIRP Life Cycle Engineering Seminar , 15th edition, Sidney, Australia, 2008, s. 581-586Konferensbidrag, Publicerat paper (Övrigt vetenskapligt)
    Abstract [en]

    In this paper the aim is to explore what drives companies to get involved in the remanufacturing operations. In the previous research there have been numerous case studies that partly have addresses the issue of why a company is getting involved in remanufacturing. A main conclusion from this study is that the motives for remanufacturing a product are very case-dependent e.g. in what industry sector the company have business in and what product type being remanufactured. In this study it is found that there are mainly three general business drivers for remanufacturing. These are: profit, company policy and the environmental drivers. For remanufacturing to be successful, these drivers are crucial, although it does not propose that all of theses drivers have to be present for a successful remanufacturing system. When combining the profit, policy and environmental factors there is a great potential for a win-win-win situation, meaning that the customer gets a quality product at a lower price, the manufacturer reduces their manufacturing costs and the environment gains from a lower environmental impact.

    Nationell ämneskategori
    Samhällsvetenskap
    Identifikatorer
    urn:nbn:se:liu:diva-13320 (URN)1877040673 (ISBN)
    Konferens
    15th CIRP International Conference on Life Cycle Engineering
    Tillgänglig från: 2008-05-27 Skapad: 2008-05-27 Senast uppdaterad: 2016-04-12
    2. Product life-cycle implications for remanufacturing strategies
    Öppna denna publikation i ny flik eller fönster >>Product life-cycle implications for remanufacturing strategies
    2009 (Engelska)Ingår i: Journal of Cleaner Production, ISSN 0959-6526, Vol. 17, nr 11, s. 999-1009Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    For remanufacturing to be successful, there is a need to gain information on future market needs of remanufactured products, and match this to information on the magnitude of return flows. One of the major issues impacting remanufacturing is in the difficulty of obtaining used products (cores) that are suitable for remanufacturing. The timing and quantity of product returns is dependent on the type of product. Factors such as the mean product lifetime, rate of technical innovation, and failure rate of components all influence the return rate of products from end-of-use and end-of-life. The balance between product returns and demand for remanufactured products is a function of many variables, where the rate of technological innovation and the expected life of a product are the major influencing characteristics. The main contribution of this paper is the support that is provided in different supply and demand situations. By using a product life-cycle perspective, the supply and demand situations can be foreseen, and support given regarding possible strategies in these situations.

    Nyckelord
    Remanufacturing; Component cannibalization; Product life-cycle; Remanufacturing strategies
    Nationell ämneskategori
    Samhällsvetenskap
    Identifikatorer
    urn:nbn:se:liu:diva-13321 (URN)10.1016/j.jclepro.2009.02.021 (DOI)
    Anmärkning

    Original Publication: Johan Östlin, Erik Sundin and Mats Björkman, Product Lifecycle Implications for Remanufacturing Strategies, 2009, Journal of Cleaner Production, (17), 11, 999-1009. http://dx.doi.org/10.1016/j.jclepro.2009.02.021 Copyright: Elsevier Science B.V., Amsterdam. http://www.elsevier.com/

    Tillgänglig från: 2009-06-12 Skapad: 2009-03-09 Senast uppdaterad: 2016-04-12Bibliografiskt granskad
    3. Importance of Closed Loop Supply Chain Relationships for Product Remanufacturing
    Öppna denna publikation i ny flik eller fönster >>Importance of Closed Loop Supply Chain Relationships for Product Remanufacturing
    2008 (Engelska)Ingår i: International Journal of Production Economics, ISSN 0925-5273, E-ISSN 1873-7579, Vol. 115, nr 2, s. 336-348Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    Remanufacturing is an industrial process where used products are restored (remanufactured) to useful life. In comparison to manufacturing, remanufacturing has some general characteristics that complicate the supply chain and production system. For example, a company must collect the used products from the customers, and thus the timing and quality of the used products are usually unknown. Remanufacturing companies are dependent on customers to return used products (cores). In this paper, seven different types of closed-loop relationships for gathering cores for remanufacturing have been identified. The relationships identified are ownership-based, service-contract, direct-order, deposit-based, credit-based, buy-back and voluntary-based relationships. Building theory around these different types of relationships, several disadvantages and advantages are described in the paper. By exploring these relationships, a better understanding can be gained about the management of the closed-loop supply chain and remanufacturing.

    Nyckelord
    Product recovery, Reverse logistics, Relationship marketing
    Nationell ämneskategori
    Samhällsvetenskap
    Identifikatorer
    urn:nbn:se:liu:diva-13322 (URN)10.1016/j.ijpe.2008.02.020 (DOI)
    Anmärkning
    Original Publication: Johan Östlin, Erik Sundin and Mats Björkman, Importance of Closed Loop Supply Chain Relationships for Product Remanufacturing, 2008, International Journal of Production Economics, (115), 2, 336-348. http://dx.doi.org/10.1016/j.ijpe.2008.02.020 Copyright: Elsevier Science B.V., Amsterdam. http://www.elsevier.com/ Tillgänglig från: 2009-06-14 Skapad: 2009-03-09 Senast uppdaterad: 2017-12-13Bibliografiskt granskad
    4. Material and Process Complexity: Implications for Remanufacturing
    Öppna denna publikation i ny flik eller fönster >>Material and Process Complexity: Implications for Remanufacturing
    2005 (Engelska)Ingår i: Proceedings of EcoDesign-05, 4th International Symposium on Environmentally Conscious Design and Inverse Manufacturing, Tokyo, Japan, 12-14 December, 2005, s. 154-161Konferensbidrag, Publicerat paper (Övrigt vetenskapligt)
    Abstract [en]

    Remanufacturing is a complex business. Many different factors and decisions affect the performance of a remanufacturing process. In this paper, four different remanufacturing cases are analyzed in how they manage these complexities. Based on the generic remanufacturing process, remanufacturing can be divided into the five phases of pre-disassembly, disassembly, reprocessing, reassembly and post-assembly. In each of these phases, a discussion is made regarding the specific factors and decisions that influence the order and purpose of the individual operations.

    Serie
    Nyckelord
    assembling, manufacturing processes, recycling, disassembly, generic remanufacturing process, process complexity, reassembly, reprocessing
    Nationell ämneskategori
    Teknik och teknologier
    Identifikatorer
    urn:nbn:se:liu:diva-13323 (URN)10.1109/ECODIM.2005.1619192 (DOI)
    Tillgänglig från: 2008-05-27 Skapad: 2008-05-27 Senast uppdaterad: 2009-06-09
    5. Lean Remanufacturing: a Study Regarding Material Flow
    Öppna denna publikation i ny flik eller fönster >>Lean Remanufacturing: a Study Regarding Material Flow
    2008 (Engelska)Artikel i tidskrift (Refereegranskat) Submitted
    Nationell ämneskategori
    Teknik och teknologier
    Identifikatorer
    urn:nbn:se:liu:diva-13324 (URN)
    Tillgänglig från: 2008-05-27 Skapad: 2008-05-27 Senast uppdaterad: 2016-04-12
    6. Lean Production Principles in Remanufacturing: A Case Study at a Toner Cartridge Remanufacturer
    Öppna denna publikation i ny flik eller fönster >>Lean Production Principles in Remanufacturing: A Case Study at a Toner Cartridge Remanufacturer
    2007 (Engelska)Ingår i: Proceedings of IEEE International Symposium on Electronics and the Environment, IEEE , 2007, s. 216-221Konferensbidrag, Publicerat paper (Övrigt vetenskapligt)
    Abstract [en]

    Scandi-Toner AB works with remanufacturing of toner cartridges; both color cartridges and black cartridges The company Scandi-Toner and the remanufacturing industry in general do, compared to ordinary manufacturing, have some specific characteristics that might limit the possibilities to apply lean production principles, due to the high degree of uncertainty in the production process. These uncertainties are mainly caused by two factors: the quantity and quality of returned cores. Overall, these characteristics make the remanufacturing material flow harder to control. Hence the purpose of this paper is to analyze if lean productions principles for material flow can be applied in a remanufacturing environment, and especially at the Swedish remanufacturer Scandi-Toner AB. The analysis shows that lean production principles can be applied in remanufacturing environments, with some constraints. For the case company the study showed that for example the workshop layout could be improved significantly according to lean production principles. The one major conclusion that can be drawn from this analysis are that the inherent characteristics of variable processing times and uncertainty in materials recovered have the major negative impact for implementing a lean production process. Vice versa, given an accurate supply of parts for reassembly, all the appropriate principles of a lean production material flow can be implemented in the phases of reassembly and testing.

    Ort, förlag, år, upplaga, sidor
    IEEE, 2007
    Serie
    IEEE International Symposium on Electronics and the Environment, ISSN 1095-2020
    Nyckelord
    Lean Productlon, Value stream mapping, Rapid Plant Assesment, Remanufacturing
    Nationell ämneskategori
    Samhällsvetenskap
    Identifikatorer
    urn:nbn:se:liu:diva-13325 (URN)10.1109/ISEE.2007.369397 (DOI)000248562400042 ()1-4244-0861-X (ISBN)
    Konferens
    15th International Symposium on Electronics and the Environment (ISEE) , May 7-10, Orlando, USA
    Tillgänglig från: 2008-05-27 Skapad: 2008-05-27 Senast uppdaterad: 2012-08-23
    7. Material handling in the remanufacturing industry: a case study of a diesel engine remanufacturing process
    Öppna denna publikation i ny flik eller fönster >>Material handling in the remanufacturing industry: a case study of a diesel engine remanufacturing process
    2005 (Engelska)Ingår i: Proceedings of CIRP Life Cycle Engineering Seminar, 12th edition, April 3-5, Laboratorie 3S, Grenoble France, 2005Konferensbidrag, Publicerat paper (Övrigt vetenskapligt)
    Nationell ämneskategori
    Teknik och teknologier
    Identifikatorer
    urn:nbn:se:liu:diva-13326 (URN)
    Tillgänglig från: 2008-05-27 Skapad: 2008-05-27 Senast uppdaterad: 2009-06-09
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