| 1. |
- Bengt, Halling, 1959-
(författare)
-
Lean Implementation : the significance of people and dualism
- 2013
-
Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Lean, with its origins at the Toyota Motor Company, is a concept that is known to increase effectiveness in manufacturing. The Lean concept is now argued to be relevant not only in manufacturing but in service and health-care delivery as well. The reported results of Lean implementation efforts are divided. There are reports that most of the Lean implementation efforts are not reaching the goal; on the other hand, there are reports of promising results. The divided results from Lean implementation efforts show how important it is to research and identify factors that are barriers to successful implementation of Lean. This thesis aims to contribute knowledge about barriers to Lean implementation by collecting empirical findings from manufacturing and health care and structuring the perceived barriers and difficulties to Lean implementation. My first study aimed to compare similarities and divergences in barriers to Lean described by key informants in manufacturing and health care. The data was collected via semi-structured interviews. Findings showed that the perceived difficulties and barriers are much the same in manufacturing and health care. The second study was a case study at a manufacturing firm, researching how the views on Lean of the managers implementing Lean influence its implementation. Data was collected via semi-structured interviews with 20 individuals and covered all hierarchical management levels in the company. Findings showed that managers' views on Lean influence the implementation but also that learning during the implementation process can alter managers' views of Lean. The third study aimed to research how management of Lean is described in the literature. This was done through a literature review. The findings showed that Lean management is a matter of dualism, consisting of two complementary systems of action, management and leadership, which are related to the two basic principles of Lean, continuous improvement and respect for the people.
|
|
| 2. |
- Chavez, Zuhara, et al.
(författare)
-
Digital Tools and Information Needs Assessment for Efficient Deviation Handling in SMEs
- 2020
-
Ingår i: Advances in Transdisciplinary Engineering at SPS2020. - : IOS Press BV. - 9781614994398 ; , s. 24-35
-
Konferensbidrag (refereegranskat)abstract
- In a time of change focusing on the application of technology, there is a high risk of underestimating the compliance of internal needs and adaption to context. The research study employs a qualitative approach using the case study methodology. The source of data comes from five different manufacturing companies categorized as Small to Medium Size Enterprises (SMEs). A multidisciplinary team performed semi-structured interviews and fieldwork at each site, along with regular online meetings with the partners. The study employs five dimensions of the information quality perspective to assess information utilized to support deviation handling and connects the information quality deficiencies to the digital tools' impact. The empirical findings indicate the need for the companies to perform a requirement analysis of information needs before the adoption of digital systems or digital tools, to assess their current state in terms of data and information. The paper discusses the impact digital tools may have on deviation management in SMEs and under which circumstances digital tools could improve deviation management. Lastly, this paper intends to shed light on the utilization of digital technologies for disturbance handling on the production shop floor. © 2020 The authors
|
|
| 3. |
|
|
| 4. |
- Engström, Tomas, 1950, et al.
(författare)
-
Inter-Relation Between Product Variant Codification and Assembly Work for Flexible Manufacturing in Autonomous Group
- 1995
-
Ingår i: Journal of Materials Processing Technology. ; 52, s. 133 - 140
-
Tidskriftsartikel (refereegranskat)abstract
- The most socio-technically advanced assembly system designs inventible requires reformed/reconfigured information systems dealing with product data (which in turn defines the product architecture and product variation). In fact, no any such (real-life) plant or assembly system would work as anticipated otherwise. And this publication is to some extent describing some selected aspects of this (very) dilemma (changing information systems are usually not something considered than designing assembly systems) (thus are totally new plants – and in turn totally new information systems – most often the real practical change to create something unorthodox) (however, which scientist will gain such opportunities, this is really rare, i.e. the projection of the Volvo Uddevalla plant was thus an exception and the trust given by the industry – by Volvo Uddevalla project organisation – was appreciated by some of the authors).
|
|
| 5. |
- Engström, Tomas, et al.
(författare)
-
Process Oriented Ergonomics - The Ergonomics of the Future? A Case Study of Integrated Ergonomics at an Engine Assembly Plant
- 2000
-
Ingår i: Proceedings of the IEA 2000/HFES 2000 Congress. ; 5, s. 5-331
-
Konferensbidrag (refereegranskat)abstract
- Ergonomics are, in most cases, focusing on the human being when evaluating assembly system designs. This results in the human performance being expressed isolated from the technical environment. On the other hand, technicians are prone to concentrate on the hardware. These conditions underline the need to pursue a more integrated evaluation and design procedure in order to avoid the drawbacks of these traditional approaches. In this paper, the authors propose an alternative approach, i.e. process oriented ergonomics, which might be a constructive way of tackling some of the more complex aspects of the man-machine interaction in industrial environments such as assembly of engines.
|
|
| 6. |
|
|
| 7. |
- Hanson, Robin, 1981, et al.
(författare)
-
Assembly station design: A quantitative comparison of the effects of kitting and continuous supply
- 2012
-
Ingår i: Journal of Manufacturing Technology Management. - : Emerald. - 1741-038X. ; 23:3, s. 315-327
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose – The purpose of this paper is to determine how kitting, compared to continuous supply, affects the time spent by the assembler fetching parts in manual assembly. Design/methodology/approach – The paper is based on an experimental setup at the Saab Automobile assembly plant in Trollhättan, Sweden. Experienced assemblers were studied as they performed the same assembly operations in ten different configurations. Each configuration consisted of a different arrangement in terms of how parts were presented. The use of kits to present parts was compared to parts presentation through continuous supply, where each part number was presented in a separate container. Findings – The time for fetching parts is significantly shorter when parts are presented through kitting instead of through continuous supply. Furthermore, the shorter fetching time is not just related to a shorter distance between assembly object and parts presentation, which can often be achieved through kitting. The reduction of time spent searching for parts is also considerable. Practical implications – The results of the paper provide valuable input in the design of assembly and materials supply systems, as they enable a better understanding of the relative performance of the materials feeding principles of kitting and continuous supply. Originality/value – Previous studies of kitting and its impact on assembly are mostly conceptual or qualitative, whereas quantitative studies are scarce. The current paper provides a substantial contribution by quantifying the effects that kitting, compared to continuous supply, has on the time spent fetching parts.
|
|
| 8. |
|
|
| 9. |
|
|
| 10. |
- Renström, Jonas
(författare)
-
Senior Managers and Lean- The importance of becoming a practitioner
- 2014
-
Licentiatavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Considered to be one of the most influential paradigms in manufacturing, Lean has developed and expanded beyond the shop floor and manufacturing environment of the auto industry. Lean is considered to be applicable throughout organizations and other industries besides manufacturing. Interest in both research and implementation of the Lean concept, heavily influenced by Toyota Motor Company, is said to continue to increase despite the fact that the concept is said to be both ambiguous and difficult to implement. Two main traditions of Lean are said to exist: “toolboxLean” and “Lean thinking.” The particular translation of the concept that is accepted will influence management’s approach in implementing a Lean way of working. The Toyota Motor Company, where Lean originates, is described as a learning organization. Therefore, a management approach and leader behavior supporting organizational learning would be required to successfully implement an enterprise system inspired by both the Toyota Production System and Lean. This thesis approaches the Lean concept through an organizational learning perspective, thereby highlighting the importance of knowledge of organizational learning in a Lean development effort. Difficulties regarding Lean implementations have been shown to often occur due to the overlooked but crucial differences in approach in management. There is, however a stated gap in the literature on Lean production regarding management. The purpose of this thesis is to explore senior management’s ability to implement and sustain a Lean-based enterprise system. Three studies are included in the thesis. The first study focuses on how the view on Lean among managers implementing Lean affects its implementation. The study was performed as a case study and conducted at a larger, international manufacturing company. The study covered management levels from shop floor manager to the president of the company. Findings show that all management levels had a similar view of Lean and that this influenced the implementation. The first study further showed that the view on Lean may develop and change during an implementation, revealing unforeseen managerial and organizational challenges and obstacles.The second study focused on how management of Lean is described in the existing literature. The results revealed a dualistic complementarity between leadership and management, which can be seen as reflected in the two foundational Toyota principles of continuous improvement and respect for people. This duality can also be found in descriptions of prerequisites for organizational learning where the ability to combine transactional and transformational leadership is considered a success factor. The third study focused on implications for senior management and aimed to research senior managers’ ability to support a Lean implementation process. The study is based on interviews with eight senior managers. The study revealed four main managerial obstacles to Lean implementation. Lack of initial competence evaluation and ensuing competence development for senior management was found to be a central obstacle to Lean implementation. Main conclusions in the thesis are that initial understanding of the aims of a Lean implementation, and the ensuing implications for the organization is central in order to be able to support the development. Additionally, initial senior management competence development is indicated to be vital in order to ensure the ability to understand the organizational and managerial implications brought on by a Lean implementation. Leading with action is indicated as providing an opportunity for senior management competence development.
|
|
| 11. |
- Afey Ali Zaidi, Zyed, et al.
(författare)
-
Waveform and Numerology to Support 5G Services and Requirements
- 2016
-
Ingår i: IEEE Communications Magazine. - : IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. - 0163-6804 .- 1558-1896. ; 54:11, s. 90-98
-
Tidskriftsartikel (refereegranskat)abstract
- The standardization of the next generation 5G radio access technology has just started in 3GPP with the ambition of making it commercially available by 2020. There are a number of features that are unique for 5G radio access compared to the previous generations such as a wide range of carrier frequencies and deployment options, diverse use cases with very different user requirements, small-size base stations, self-backhaul, massive MIMO, and large channel bandwidths. In this article, we propose a flexible physical layer for the NR to meet the 5G requirements. A symmetric physical layer design with OFDM is proposed for all link types, including uplink, downlink, device-to-device, and backhaul. A scalable OFDM waveform is proposed to handle the wide range of carrier frequencies and deployments.
|
|
| 12. |
- Ahlsén, Bertil, et al.
(författare)
-
Ombyggnad Torslanda
- 1990
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report for the company in question (the Volvo Automobile Company and the Volvo Torslanda plant) which is financed by the company and partly also by a research foundation. It is a matter of a work that in this particular case were carried out during nine years in a number of experimental workshops located outside the Chalmers University of Technology. These workshops were financed by the Volvo Automobile and Truck companies. This achievement, as the final contribution to the Swedish automotive industry after having already treated this research field/problem area for more than two decades before this particular period if time (involving several junior and senior research competencies, as well as industrial and governmental foundings).
|
|
| 13. |
|
|
| 14. |
- Blomquist, Bo, 1958, et al.
(författare)
-
Assembly Systems and Work in the Swedish Automotive Industry
- 2013
-
Ingår i: Nordic Lights. Work, Management, and Welfare in Scandinavia. - 1 85972 106 0 ; , s. 225-254
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- See web-link given på Chalmers Public Library (CPL). This is an edited chapter in a book (editor was Åke Sandberg from the Swedish Institute for work Life Research Stockholm (Arbetslivsinstitutet in Swedish). This publication enlightens the authors' research and development work regarding alternatives to line assembly. Comprising e.g. explaining of the different (real-life) assembly systems utilized in Sweden all through the passing years. In a more overarching way, it criticizes the way the insights and experiences gained by such (more or less socio-technically advanced assembly system designs practised (a vast of misunderstandings and rumours are obviously at hand today. To some extent is thereby this actually a refined summarization of some of our earlier scientific contributions (see some of the other publications registered in Chalmers Public Library CPL).
|
|
| 15. |
- Blomquist, Bo, 1958, et al.
(författare)
-
Utvärdering av Volvo Lastvagnars monteringsfabrik för hyttillverkning i Umeå
- 2005
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report (“avnämarrapport” in Swedish) for the company in question which is financed by the company (through the Swedish Metall Workers Union, Metall) and partly also by a research foundation. It is a matter of combined data collection (collections of company data, interviews, questionnaire surveys, video-registration, etc.). In this case, was e.g. two so-called total surveys of all blue-collar employees dealing with assembly work. The problem area (or research question) was focused on a conversion back to assembly line work. Before was an early sort of, less sociotechnically advanced, parallel workgroups practiced) not the far more sociotechnically advanced alternatives to assembly line work that was at hand at the defunct Volvo Automobile AB:s plant located in Uddevalla or the so-called assembly docks located in the Volvo Truck AB:s plant in Tuve (i.e. the sole two real-life assembly system of this very calibre). This was actually wage owner consultant initiative performed with Logistic and Transportation as the sole base (no private consulting). It was a matter of combined data collection (collections of company data, interviews, questionnaire surveys, video-registration, etc. among other this thereby prospection many of our scientific methods developed during several decades. For example, involving two so-called total surveys of all blue-collar employees dealing with assembly work. The authors and their other colleagues were thus, in many respects, using a wide repertoire of scientific methods.
|
|
| 16. |
- Browne, Michael, et al.
(författare)
-
MIND THE GAP: THE INTERFACE BETWEEN AUTONOMOUS VEHICLES AND THE LOGISTICS SYSTEM
- 2020
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Purpose Using autonomous vehicles in goods transport has potential benefits. However, the transition to a future autonomous (and electric) freight system needs to take account of the interface between the vehicle and other parts of the logistics system in order to exploit potential benefits and overcome challenges related to the absence of a driver. The purpose of the research is to identify the prerequisites for achieving automated loading, unloading, related information handling and in-plant transport at these interfaces. Research Approach Cases studies consider senders and receivers of various products as well as organisations that have a role including real estate companies that develop warehouses and terminals. The case studies consider vehicle and handling equipment technology alongside the processes that may need to change if the efficiency gains of an autonomous vehicle are to be realised. Research questions are addressed at the logistics system level. The cases studies combine questions about logistics process and technology alongside those concerned with underlying business models. Findings and Originality Results presented are at the half way stage of a two-year project and will be based on the initial series of interviews for four case studies. Findings so far include: (1) lack of development in this topic compared with interest in autonomous and automated transport (2) importance of organisational ssues in the logistics chain e.g. contractual relationships (3) importance of taking a broad view of the companies that need to be involved (4) product type and characteristics are important but other factors may have more influence on the scope to develop initiatives in this area. Research Impact The research provides insights into the complexity of the interfaces in autonomous and automated transport and logistics systems. The empirical findings enrich the discussion of this field. Combining insights from logistics, technology, materials handling and business has demonstrated the benefits of an interdisciplinary approach. Practical Impact Autonomous transport systems may bring many commercial benefits. However, the scale of these benefits will be significantly diminished if questions about the interface points in the logistics system are not addressed. The outputs of the research will provide important insights for managers addressing these challenges.
|
|
| 17. |
- Brynzér, Henrik, et al.
(författare)
-
A Methodology for Design and Evaluation of Picking Systems
- 1993
-
Ingår i: Management and New Production Systems, Proceedings of the 4th International Production Management Conference, London, April 1993. ; , s. 139-152
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)
|
|
| 18. |
- Brynzér, Henrik, et al.
(författare)
-
A methodology for evaluation of order picking systems as a base for system design and managerial decisions
- 1994
-
Ingår i: International Journal of Operations and Production Management. - 1758-6593 .- 0144-3577. ; 14:3, s. 126-139
-
Tidskriftsartikel (refereegranskat)abstract
- Presents a methodology useful when analysing the efficiency of order picking systems. The main feature of the analysis is the ability to compare different system designs. The methodology has earlier been applied mainly to assembly production systems, and has in these cases proved to be an effective management tool in discussions concerning the choice of production system.
|
|
| 19. |
|
|
| 20. |
|
|
| 21. |
- Calzavara, Martina, et al.
(författare)
-
Picking from pallet and picking from boxes: a time and ergonomic study
- 2017
-
Ingår i: IFAC-PapersOnLine. - : Elsevier BV. - 2405-8963. ; 50:1, s. 6888-6893
-
Konferensbidrag (refereegranskat)abstract
- The paper aims at studying different storing configurations and presentation strategies for the parts in a manual assembly system. Based on an experiment, the paper gives insight into how both picking time and ergonomic effort relate to the storing configuration, considering whether parts are stored on pallets or in smaller boxes, and considering whether or not the containers are tilted towards the picker.
|
|
| 22. |
- Christmansson, M, et al.
(författare)
-
A case study of a principally new way of materials kitting - an evaluation of time consumption and physical workload
- 2002
-
Ingår i: International Journal of Industrial Ergonomics. - : Elsevier. - 0169-8141. ; 30:1, s. 49-65
-
Tidskriftsartikel (refereegranskat)abstract
- This article presents a materials kitting case study, using an alternative method for materials killing: the traditional picker-to-material principle was replaced with a material-to-picker approach. The Study was made in a materials supply workshop of an automobile plant shortly after this kitting process had been introduced. The materials kitting was video recorded and the material pickers' physical exposure was assessed using ambulatory equipment to make an integrated registration of muscular activity, work postures and movements. The material pickers assessed work situations perceived as physically stressful. The materials kitting showed improved productivity as compared with other kitting methods. The study indicated that the work situation offered pickers low levels of physical exposure. The picking work was rather light but involved great repetitiveness in arm movements. The material pickers experienced the work as repetitive and having some physically stressful work situations. The integrated analyses showed: (1) that exposure in picking operations was similar to, but could be distinguished from, other work activities and (2) that picking from one type of storage package, Euro pallets, resulted in higher exposure than picking from plastic containers. More studies are needed on the implications of exposure levels in materials picking.
|
|
| 23. |
- Christmansson, Marita, et al.
(författare)
-
A case study of a principally new way of materials kitting—an evaluation of time consumption and physical workload
- 2002
-
Ingår i: International Journal of Industrial Ergonomics. - : Elsevier. - 0169-8141 .- 1872-8219. ; 30:1, s. 49-65
-
Tidskriftsartikel (refereegranskat)abstract
- This article presents a materials kitting case study, using an alternative method for materials kitting: the traditional picker-to-material principle was replaced with a material-to-picker approach. The study was made in a materials supply workshop of an automobile plant shortly after this kitting process had been introduced. The materials kitting was video recorded and the material pickers’ physical exposure was assessed using ambulatory equipment to make an integrated registration of muscular activity, work postures and movements. The material pickers assessed work situations perceived as physically stressful. The materials kitting showed improved productivity as compared with other kitting methods. The study indicated that the work situation offered pickers low levels of physical exposure. The picking work was rather light but involved great repetitiveness in arm movements. The material pickers experienced the work as repetitive and having some physically stressful work situations. The integrated analyses showed: (1) that exposure in picking operations was similar to, but could be distinguished from, other work activities and (2) that picking from one type of storage package, Euro pallets, resulted in higher exposure than picking from plastic containers. More studies are needed on the implications of exposure levels in materials picking.
|
|
| 24. |
- Danhäll, D, et al.
(författare)
-
Naturligt grupperat arbete vid Volvo Lastvagnar – Delrapport 1
- 1989
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report for the company in question (the Volvo Truck Company) which is financed by the company and partly also by a research foundation. It is a matter of a work that in this particular case were carried out during nine years in a number of experimental workshops located outside the Chalmers University of Technology. These workshops were financed by the Volvo Automobile and Truck companies. This achievement, as the final contribution to the Swedish automotive industry after having already treated this research field/problem area for more than two decades before this particular period if time (involving several junior and senior research competencies, as well as industrial and governmental foundings). Specifically, this publication explains how the authors dealt with the product architecture and product variation of the automotive products disassembled, which proved to necessary to be carried out in one of the experimental workshops (several complete automobiles and one heavy truck chassis were disassembled combined with having product data accessible in form of paper print-outs as well as by appropriate computer connections to the two Volvo companies etc.). That is, by using a special sort of “design analysis by means of axonometric hand-drawn illustrations” (see a conference contribution from 1992 that also is registered and available as o PDF-document at Chalmers Public Library (CPL) (a self-developed method found out together with a junior research competency from the School of Architecture at Chalmers).
|
|
| 25. |
- Danhäll, D, et al.
(författare)
-
Naturligt grupperat arbete vid Volvo Lastvagnar – Delrapport 2
- 1989
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report for the company in question (the Volvo Truck Company) which is financed by the company and partly also by a research foundation. It is a matter of a work that in this particular case were carried out during nine years in a number of experimental workshops located outside the Chalmers University of Technology. These workshops were financed by the Volvo Automobile and Truck companies. This achievement, as the final contribution to the Swedish automotive industry after having already treated this research field/problem area for more than two decades before this particular period if time (involving several junior and senior research competencies, as well as industrial and governmental foundings). Specifically (and as stated for the previous report), this publication explains how the authors dealt with the product architecture and product variation of the automotive products disassembled, which proved to necessary to be carried out in one of the experimental workshops (several complete automobiles and one heavy truck chassis were disassembled combined with having product data accessible in form of paper print-outs as well as by appropriate computer connections to the two Volvo companies etc.). That is, by using a special sort of “design analysis by means of axonometric hand-drawn illustrations” (see a conference contribution from 1992 that also is registered and available as o PDF-document at Chalmers Public Library (CPL) (a self-developed method found out together with a junior research competency from the School of Architecture at Chalmers).
|
|
| 26. |
- Danhäll, D, et al.
(författare)
-
Naturligt grupperat arbete vid Volvo Lastvagnar – Slutrapport
- 1990
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report for the company in question (the Volvo Truck Company) which is financed by the company and partly also by a research foundation. It is a matter of a work that in this particular case were carried out during nine years in a number of experimental workshops located outside the Chalmers University of Technology. These workshops were financed by the Volvo Automobile and Truck companies. This achievement, as the final contribution to the Swedish automotive industry after having already treated this research field/problem area for more than two decades before this particular period if time (involving several junior and senior research competencies, as well as industrial and governmental foundings). A comment: As was the praxis during this (early) period of time at Chalmers University of Technology, as well as probably at some other universities. This means that frequent and vast academic publication by means of e.g. conference papers and refereed contributions to scientific journals was almost unheard of. At least so for some of the applied science disciplines. However, today are the situation indeed very different (i.e. earlier was the publication in many respects focused on trying to satisfy the executive administrator the research foundation in question etc.). To be more precise, this early praxis was definitively the case for the research and development work carried out at the Department of Transportation (a broadly applied science discipline), which was characterized by more practical strives to e.g. engineer research results. Rather than relying on truer scientific efforts in a narrower sense. Functional satisfaction (i.e. something engineered work as planned instead verification/falsification of a hypothesis) was judged as being a primary aim of this research and development work. Therefore are (in the context of the publications registered in Chalmers Public Library CPL) the author making distinctions between consumer reports, on one hand. And, one the other hand, reports and preprints (manuscripts), while instead the academically orientated publications are various sort of scientific contributions presented at conferences or published in scientific journals (actually it is somewhat more complex, but further explanations are omitted here). The consumer reports were aimed at a various external organization with who the authors cooperated, and these are in many cases not available in PDF format to be easily read by logging in at CPL. This particular approach has judged as being fair/relevant fair in order to mirror of work conducted by the author or authors during the passing decades. Besides, the competencies at Chalmers Library, who actually have been very helpful, have not managed to provide appropriate answers to the various questions implied being at hand just above (this despite trying to get hold of such answers, hence this very comment).
|
|
| 27. |
- Davies, Roy, et al.
(författare)
-
Work and Work Place Design Using Empirical Shop Floor Information and Virtual Reality Techniques
- 1997
-
Ingår i: IEA'97 "From Experience to Innovation". ; 2, s. 25-27
-
Konferensbidrag (refereegranskat)abstract
- Work place design based on traditional ergonomic science has, to a large extent, been delimited by information collected from studies of individual human beings. This research approach has not been proven to influence industry shop floor work to an extent corresponding to what could be expected from research efforts (Winkel and Westgaard, 1995). Thus the practitioners are left to decide about the detailed work place design, neglecting scientific knowledge. The accelerating development within technical as well as social sciences, combined with the industrial development of production systems has, in fact, blurred the vision and method arsenal available for those interested in fitting the production system to the man. However, new prospects have, at the same time, been made available through expanding personal computer and Virtual Reality (VR) techniques implying untraditional analysis procedures for work and work place design as will be illustrated in this paper. The aim of this paper is to illuminate the feasibility of such a prospect using personal computer-,. video- and VR-techniques to amalgamate empirical shop floor information especially collected for design purposes with computer models of work. Two case studies, denoted case I and case II, will be shortly described from which an integration will be discussed.
|
|
| 28. |
- Edberg, K. U., et al.
(författare)
-
Materialfasader och förpackningar vid manuell montering i japansk och svensk fordonsindustri
- 2005
-
Ingår i: Kvalitet och effektivitet i hela försörjningskedjan, Proceedings of PLANs forsknings- och tillämpningskonferens 2005, Borås, Ekwall, D., ed., Högskolan i Borås and PLAN Föreningen för produktionslogistik. ; , s. 73-94
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Utformningen av materialexponeringen i manuella monteringssystem med valet av förpackningar och materialfasader är viktigt för resursförbrukningen. Denna fallstudie visar på en jämförelse mellan svensk och japansk praxis när det gäller materialhantering på arbetsstationer. Den japanska praxisen innebär generellt mindre förpackningar som är komponent- och montörsanpassade, vilka är placerade i materialfasader som är annorlunda utformade jämfört med svensk industri idag. Fokus har varit att studera effekterna på resursförbrukningen genom en förändring av förpackningarnas utformning och materialexponering. De studerade faktorerna har enbart varit materialhanteringsrelaterade inom arbetsstationen; materialfasadernas längd- och ytbehov, montörers gångavstånd, tidsförbrukning för materialhantering och fysisk belastning i anslutning till plock ur materialförpackningar. Vi kan konstatera att vår studie visar på stora effektiviseringspotentialer för den svenska industrin genom en annorlunda och japaninspirerad utformning av materialhanteringen inom manuella produktions-system.
|
|
| 29. |
- Ekendahl, Mats, et al.
(författare)
-
Indelning av bilar i monteringsvarianter och dess påverkan på material- och monteringsverksamheten i Volvo Uddevallafabriken
- 1989
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report for the company in question (the Volvo Automobile Company) which is financed by the company and partly also by a research foundation. It is a matter of a work that in this particular case were carried out during nine years in a number of experimental workshops located outside the Chalmers University of Technology. These workshops were financed by the Volvo Automobile and Truck companies. This achievement, as the final contribution to the Swedish automotive industry after having already treated this research field/problem area for more than two decades before this particular period if time (involving several junior and senior research competencies, as well as industrial and governmental foundings). Specifically, this publication explains in one particular perspective how the authors dealt with the product architecture and product variation of the automotive products disassembled, which proved to necessary to be carried out in one of the experimental workshops (FOOTNOTE 1). Namely how the product variation and product variant were handled (FOOTNOTE 2). However, even if much of our work was introduced for full-scale production purposes was the product planning system practised in the Volvo Uddevalla plant never reformed (even if far-reaching efforts were considered before the closing down). The original planning system was one of the reasons for not being able to reap the potential of this assembly plant (i.e. the time-saving of some 2 – 4 hours in comparison to the Volvo Torslanda plant was not possible to accumulate due to the use of traditional codification of product variants suited for assembly line work) (see some of the other publications registered in Chalmers Public Library CPL). FOOTNOTE 1: See a conference contribution from 1992 that also is registered and available as a PDF-document at Chalmers Public Library (CPL) (a self-developed method found out together with a junior research competency from the School of Architecture at Chalmers). FOOTNOTE 2: See a conference contribution from 1990 denoted “Material Flow Analysis, Sociotechnology and Naturally Grouped…..” that also is registered and available as o PDF-document at Chalmers Public Library (CPL) (a self-developed method found out together with a junior research competency from the School of Architecture at Chalmers). This publication reports on an alternative system for planning of product variant long before the Volvo Uddevalla plant was closed down.
|
|
| 30. |
|
|
| 31. |
|
|
| 32. |
|
|
| 33. |
- Ellegård, Kajsa, 1951, et al.
(författare)
-
Reflective Production in the Final Assembly of Motor Vehicles - An Emerging Swedish Challenge
- 1992
-
Ingår i: International Journal of Operations and Production Management. - 1758-6593 .- 0144-3577. ; 12:7/8, s. 117-133
-
Tidskriftsartikel (refereegranskat)abstract
- Presents some theoretical principles and empirical evidence relating to the new Swedish production systems for final assembly of motor vehicles. Contends that in these production systems it is possible simultaneously to enhance efficiency and quality of working life. Briefly sketches three production forms as they apply to the final assembly of automobiles and discusses the societal environments in which these different forms of production have evolved. It focuses on Volvo Uddevalla plant as one of the main examples so far of a reflective production system for final assembly of automobiles. Amplifies the analysis of different production flow patterns for final assembly and in particular addresses the issue of semi‐parallel mechanistic production flow and parallel organic production flow as alternatives to serial flow on a conventional line assembly. A comment: This publication is authored together with e.g. senior research competencies (1) within vocational learning and training as well as (2) within time-geography with whom Engström have had long time cooperation procedures. But also personal at our department/research group (Mats Johansson) well as our knowledgeable contact person (Bertil Johansson) within Volvo contributed (he has really helped us out for decades and was responsible for the continuous contacts with Volvo in most any matter).
|
|
| 34. |
- Ellegård, Kajsa, 1951, et al.
(författare)
-
Reflektiv produktion – Industriell verksamhet i förnyelse
- 1992
-
Bok (övrigt vetenskapligt/konstnärligt)abstract
- This book, a sort of summarization of the authors' insights and experiences regarding group work as well as alternatives to assembly line work from their own scientific perspective, which was made available in 1992. That is, in the (very specific) period of time (or turbulence) while the assembly plants in Uddevalla and Kalmar were closed down (the former assembly plant was closed down first, while the other was shut down approximate a year later). This book has been published by Volvo (AB Volvo Media, ISBN-number: 91 9761 604). It has been published by Arbetslivsutveckling with the editors Lars Cambert and Glenn Carlsson at this department. Moreover, the content has been validated by a number of Volvo experts and discussed at a seminary (among other things, each of these experts had to provide written comments to the two editors etc.). A comment: This publication is authored together with e.g. senior research competencies (1) within vocational learning and training as well as (2) within time-geography with whom Engström have had long time cooperation procedures. But also personal at our department/research group (Mats Johansson) well as our knowledgeable contact person (Bertil Johansson) within Volvo contributed. A comment: This publication is authored together with e.g. senior research competencies (1) within vocational learning and training as well as (2) within time-geography with whom Engström have had long time cooperation procedures. But, as our knowledgeable contact person (Bertil Johansson) within Volvo has contributed (he was helping us out for decades).
|
|
| 35. |
|
|
| 36. |
- Engström, Tomas, 1950, et al.
(författare)
-
Alternativ montering
- 2008
-
Ingår i: Chukyo Keiei Kenkyu (academic japanese journal). ; 18:1, s. 73 - 153
-
Tidskriftsartikel (refereegranskat)abstract
- A translation into Japanese of the three authors’’ book written for and financed by the Swedish Metal Workers Union (IF Metall is Swedish). Namely, “Alternativ montering. Principer och erfarenheter från fordonsindustrin”, Engström, Jonnsson and Medbo 2005). Which was financed by this organization (i.e. Metall), and which summarizes the authors’’ insights and experiences in more popular terms (used for this organization’s education, as well as made available on their website) (see other publications registered in Chalmers Public library CPL).
|
|
| 37. |
- Engström, Tomas, 1950, et al.
(författare)
-
Alternativ montering – Principer och erfarenheter från fordonsindustrin
- 2005
-
Bok (övrigt vetenskapligt/konstnärligt)abstract
- This book was written for and financed by the Swedish metal workers union (IF Metall is Swedish). And, it summarizes the authors’’ insights and experiences regarding assembly work within the Swedish automotive industry in more popular terms (it was used for this organization’s education, as well as made available on their public website). And, this book features a preface written by the official head (chairman) of the organisation (Göran Johnsson Metall).
|
|
| 38. |
- Engström, Tomas, 1950, et al.
(författare)
-
Alternative Product Structures and Product Variant Codification: Experiences from reforming the assembly line – possibilities for physical and administrative modularisation
- 2001
-
Ingår i: The CoCKEAS workshop New Principles of Productive Organisation: Innovation and Modular Production , GATE, Université Lumière Lyon 2, Lyon 15-16 March 2001.
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- This publication explains the differences between administrative and physical modularisation, which in turn implies new opportunities to deal with so-called just-in-time (JIT) deliveries. Thus are e.g. the nowadays coagulated road traffic system, in fact, possible resolve (as were the product planning system that hampered the performance of the Volvo Uddevalla plant, it was relying on traditional codification of the product variants, thus were the reduced so-called production losses never possible to accumulate between automobiles for each and every small parallel workgroup) (the information system was totally new – nothing external was allowed to enter the shop floor of this plant – but still were some assembly line approaches was still at hand). A comment: The most socio-technically advanced assembly system designs inventible requires reformed/reconfigured information systems dealing with product data (which in turn defines the product architecture and product variation). In fact, no any such (real-life) plant or assembly system would work as anticipated otherwise. And this publication is to some extent describing some selected aspects of this (very) dilemma (changing information systems are usually not something considered than designing assembly systems) (thus are totally new plants – and in turn totally new information systems – most often the real practical change to create something unorthodox) (however, which scientist will gain such opportunities, this is really rare, i.e. the projection of the Volvo Uddevalla plant was thus an exception and the trust given by the industry – by Volvo Uddevalla project organisation – was appreciated by some of the authors).
|
|
| 39. |
|
|
| 40. |
- Engström, Tomas, 1950, et al.
(författare)
-
An Assembly-Oriented Product Description System as a Precondition for Efficient Manufacturing with Long Cycle Time Work
- 1993
-
Ingår i: Productivity & Quality Management Frontiers – IV, Proceedings of the Fourth International Conference on Productivity & Quality Research, Miami, Vol. 2, Suthmanth, D. J., Edosomwan, J. A., Poupart, R. and Sink, D. S. (eds.), Industrial Engineering and Management Press, Norcross, Georgia.
-
Konferensbidrag (refereegranskat)
|
|
| 41. |
- Engström, Tomas, 1950, et al.
(författare)
-
Assembly Work Structuring Based on Restructuring and Transformation of Product Information
- 2002
-
Ingår i: Journal of Humanities and social sciences, Nagoya City University; Nagoya (translated into japanese). - 1342-9310. ; 12, s. 279 - 309
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- This publication partly explains how we had managed amalgamate manufacturing engineering according to our interpretation and e.g. Gestalt psychology (i.e. for the most socio-technically advanced assembly system designs). This is something that is elaborated further and better repetitively in other publications registered in Chalmers Public Library (CPL) (especially is this the case in some of the latest preprints/manuscripts). That is, how the learning and training principles advocated by the senior research competency within vocational learning and training were realised in practice for full-scale production purposes.
|
|
| 42. |
- Engström, Tomas, 1950, et al.
(författare)
-
Automotive Industry
- 1997
-
Ingår i: The Workplace – Major industries and occupations, Vol. 2, Brune, D., Gerhardsson, G., Crockford, G. W. and Norbäck, D. (eds.), International Occupational Safety and Health Information Centre (CIS), International Labour Office Geneva, Scandinavian Science Publisher, Oslo. ; , s. 548-565
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)
|
|
| 43. |
|
|
| 44. |
|
|
| 45. |
- Engström, Tomas, 1950, et al.
(författare)
-
Design Analysis by Means of Axonometric Hand–drawn Illustrations
- 1992
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This scientific contribution summarizes some of the research and development work carried out by the authors while we were engaged in the Volvo Automobile Company’s assembly plant in Uddevalla. It explains how we managed the illustrate the product architecture and product variation of the automobile model in question (the Volvo 700 model). Comment: Our clients (the project organisation at Volvo) allowed us to make scientific contributions reporting on e.g. principles and practises during the life of this assembly plant, but they were not keen letting us publish any hard information (many other scientists were far interested publishing just anything). For strategic reasons would, in fact, the principles be kept secret instead (however these principles, though practised by Volvo, were actually never officially/publically absorbed by the Volvo companies) (nowadays are all of the knowledgeable individuals etíher dead or retired). Most probably do similar efforts calling for an experimental workshop in connection with an industrial change, as well as access to similar competencies (various knowledgeable practitioners, as well as senior and junior research competencies, were inventible called for) (just to master the specific nomenclature at hand within the various Volvo companies was really difficult for us) (who will help an external scientist if this requires extra work just to understand what he or she wants?). This is a situation that is almost an impossibility today, with the ways research and development work are organised and financed today at Chalmers University of Technology (in fact, it was far more anarchistic earlier, as long as you were able to finance the efforts in question).
|
|
| 46. |
|
|
| 47. |
- Engström, Tomas, 1950, et al.
(författare)
-
Development of Assembly Competence in Parallelized Flow Assembly Systems
- 1994
-
Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This publication explains the competence development (in form of the length of work cycle times, which were not fixed) within the Volvo Uddevalla plant. Note the minimum work cycle time was 1/4 of an automobile (an inventible result due to the sociotechnically advanced of assembly system design) (in fact, quite ingeniously carried out). The advance material feeding technique was the reason for this competence level (a result of the research and development work within some of the authors' experimental workshops).
|
|
| 48. |
- Engström, Tomas, 1950, et al.
(författare)
-
Developments in Assembly System Design: The Volvo Experience
- 1999
-
Ingår i: Coping with Variety: Flexible Production Systems for Product Variety in the Automobile Industry; Lung, Y., Chanaron, J. J., Fujimoto, T. and Raff, D. (eds.); Ashgate, Aldershot. - : Routledge. - 9780429839931 ; , s. 192-223
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This chapter focuses on experiences concerning the development of assembly systems within the Volvo Corporation. It provides research and development work within the Swedish automotive industry. The chapter considers a specific trajectory concerning assembly system design in the Swedish automobile industry, generalising the Volvo Kalmar and Volvo Uddevalla experiences. During 1988–1990, the managers at Volvo were planning the manufacturing of the new 800 model at the main Volvo Torslanda plant, as well as looking for a total redesign of the plant. The average product quality in the Uddevalla plant was high–in fact better than in Volvo's line assembly plants–but the product quality varied considerably. Productivity and flexibility proved to be superior to traditional serialassembly systems. Two ways of decreasing the time losses are to introduce parallel flow assembly systems–that is assembly systems consisting of many, short, unpaced flows–or to introduce buffers between work-stations.
|
|
| 49. |
- Engström, Tomas, 1950, et al.
(författare)
-
Effektiv småbåtsproduktion. Delrapport
- 1984
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report ("avnämarrapport" in Swedish) for a research foundation (Styrelsen för Teknisk Utveckling, Stockholm). A comment: Publishing consumer reports was the praxis during this (early) period of time at Chalmers University of Technology, as well as probably at some other universities. This means that frequent and vast academic publication by means of e.g. conference papers and refereed contributions to scientific journals was almost unheard of. At least so for some of the applied science disciplines. However, today are the situation indeed very different (i.e. earlier was the publication in many respects focused on trying to satisfy the executive administrator the research foundation in question etc.). To be more precise, this early praxis was definitively the case for the research and development work carried out at the Department of Transportation (a broadly applied science discipline), which was characterized by more practical strives to e.g. engineer research results. Rather than relying on truer scientific efforts in a narrower sense. Functional satisfaction (i.e. something engineered work as planned instead verification/falsification of a hypothesis) was judged as being a primary aim of this research and development work. Therefore are (in the context of the publications registered in Chalmers Public Library CPL) the author making distinctions between consumer reports, on one hand. And, one the other hand, reports and preprints (manuscripts), while instead the academically orientated publications are various sort of scientific contributions presented at conferences or published in scientific journals (actually it is somewhat more complex, but further explanations are omitted here). The consumer reports were aimed at a various external organization with who the authors cooperated, and these are in many cases not available in PDF format to be easily read by logging in at CPL. This particular approach has judged as being fair/relevant fair in order to mirror of work conducted by the author or authors during the passing decades. Besides, the competencies at Chalmers Library, who actually have been very helpful, have not managed to provide appropriate answers to the various questions implied being at hand just above (this despite trying to get hold of such answers, hence this very comment).
|
|
| 50. |
- Engström, Tomas, 1950, et al.
(författare)
-
Effektiv småbåtsproduktion. Slutrapport
- 1984
-
Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Consumer report ("avnämarrapport" in Swedish) for a research foundation (Styrelsen för Teknisk Utveckling, Stockholm). A comment: Publishing consumer reports was the praxis during this (early) period of time at Chalmers University of Technology, as well as probably at some other universities. This means that frequent and vast academic publication by means of e.g. conference papers and refereed contributions to scientific journals was almost unheard of. At least so for some of the applied science disciplines. However, today are the situation indeed very different (i.e. earlier was the publication in many respects focused on trying to satisfy the executive administrator the research foundation in question etc.). To be more precise, this early praxis was definitively the case for the research and development work carried out at the Department of Transportation (a broadly applied science discipline), which was characterized by more practical strives to e.g. engineer research results. Rather than relying on truer scientific efforts in a narrower sense. Functional satisfaction (i.e. something engineered work as planned instead verification/falsification of a hypothesis) was judged as being a primary aim of this research and development work. Therefore are (in the context of the publications registered in Chalmers Public Library CPL) the author making distinctions between consumer reports, on one hand. And, one the other hand, reports and preprints (manuscripts), while instead the academically orientated publications are various sort of scientific contributions presented at conferences or published in scientific journals (actually it is somewhat more complex, but further explanations are omitted here). The consumer reports were aimed at a various external organization with who the authors cooperated, and these are in many cases not available in PDF format to be easily read by logging in at CPL. This particular approach has judged as being fair/relevant fair in order to mirror of work conducted by the author or authors during the passing decades. Besides, the competencies at Chalmers Library, who actually have been very helpful, have not managed to provide appropriate answers to the various questions implied being at hand just above (this despite trying to get hold of such answers, hence this very comment).
|
|
