| 1. |
- Finnsgård, Christian, 1974, et al.
(författare)
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Impact of materials exposure on assembly workstation performance
- 2011
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Ingår i: International Journal of Production Research. - : Informa UK Limited. - 0020-7543 .- 1366-588X. ; 49:24, s. 7253-7274
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Tidskriftsartikel (refereegranskat)abstract
- This paper examines how the choice of materials exposure impacts workstation performance, in terms of non-value-adding work, space requirements and ergonomics. In a typical Swedish automotive setting, components are exposed in wooden pallets with frames beside the assembly line and supplied by forklift truck. In a case study, three workstations on an assembly line were studied and redesigned following the principles of lean production, using smaller plastic containers for the materials exposure. After the redesign, the space required for materials was reduced by 67%, non-value-adding work decreased by 20%, and walking distance was reduced by 52%. Furthermore, the ergonomics for the assembly operator improved greatly, with a 92% reduction of potentially harmful picking activities, thereby almost eliminating potentially harmful body movements. The theoretical contribution of this paper is firstly the development of an analysis model describing the impact of material exposure on workstation performance and secondly development of the existing categorization of work operations to include different materials handling activities. The most important managerial implication is an increased understanding of the relationship between space, ergonomics, non-value-adding work and materials exposure. These findings have direct implications on workstation design in industry.
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| 2. |
- Stark, Andreas, et al.
(författare)
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Hybrid digital manufacturing: Capturing the value of digitalization
- 2023
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Ingår i: Journal of Operations Management. - : Wiley. - 1873-1317 .- 0272-6963. ; 69:6, s. 890-910
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Tidskriftsartikel (refereegranskat)abstract
- A chasm is growing between the advanced technologies available for improving manufacturing operations and those effectively used in practice. The vision of Industry 4.0 is to mobilize industry to seek out these possibilities for improvement and to close the gap between opportunity and reality. However, when compared with more established improvement opportunities such as lean manufacturing, the digitalization of manufacturing lacks in both paradigmatic examples and an understanding of how to achieve the benefits. This lack is a complication of concern: Without an appropriate operations strategy to capture the value of digitalization, manufacturing companies will be unable to focus on technological investments and operational changes. To address this concern, operations management academics must develop new theory through active engagement in the practice of digitalization in manufacturing. This research presents a paradigmatic example, based on engaged scholarship, focused on effectively combining novel object-interactive and conventional manufacturing syntax for benefiting from digitalization in internal operations and the wider supply chain. The contribution to literature is a novel operations strategy—hybrid digital manufacturing—for capturing the value of Industry 4.0 technologies.
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| 3. |
- Fager, Patrik, 1988, et al.
(författare)
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Order picking in dense areas – productivity impact of confirmation methods
- 2018
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Ingår i: 25th International EurOMA Conference.
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Konferensbidrag (refereegranskat)abstract
- Confirmation methods are applied in supply chain order picking to increase picking quality, but research is lacking about how various confirmation methods affect picking productivity. This paper’s purpose is to identify the extent by which the type of confirmation method affects picking productivity in dense areas. Four confirmation methods (button-presses, barcode-scans, voice-commands, and RFID-wristbands) are studied in an experiment. The placement confirmation method is found to greater impact productivity than the picking confirmation method, and RFID-wristbands and button-presses display higher productivity than barcode-scans and voice-commands. The findings are relevant for practitioners and academics involved with designing order picking systems.
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| 4. |
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| 5. |
- Fredriksson, Anna M K, 1979, et al.
(författare)
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The impact of outsourcing on materials planning
- 2010
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Ingår i: EurOMA, Porto, 2010.
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Konferensbidrag (refereegranskat)abstract
- Outsourcing is realized through production transfer during which there is much uncertainty and the main task for materials planning (MP) is to assure material supply. The purpose of this paper is to develop the understanding of how the outsourcing transfer situation (OTS) affect the MP process and the transfer performance as well as how these conditions together with the choice and application of the MP process impact transfer performance. A conceptual framework describing the OTS characteristics and their relation to transfer performance is developed and applied to a case study.
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| 6. |
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| 7. |
- Hanson, Robin, 1981, et al.
(författare)
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Kitting and time efficiency in manual assembly
- 2009
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Ingår i: In 16th International Annual EurOMA Conference: Implementation – realizing Operations Management knowledge. 14-17 June, 2009, Göteborg.
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Konferensbidrag (refereegranskat)
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| 8. |
- Hanson, Robin, 1981, et al.
(författare)
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Man-hour efficiency of manual kit preparation in the materials supply to mass-customised assembly
- 2019
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Ingår i: International Journal of Production Research. - : Informa UK Limited. - 0020-7543 .- 1366-588X. ; 57:11, s. 3735-3747
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Tidskriftsartikel (refereegranskat)abstract
- © 2019, © 2019 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. Addressing the materials feeding principle of kitting, commonly applied in the materials supply to mass-customised assembly, the current paper has the purpose of exploring how the man-hour efficiency of kit preparation is affected by the design and the context of the kit preparation. The study presented in the paper is based on a comprehensive methodology, comprising several steps and considering a large set of qualitative as well as quantitative data from 15 case studies. It also utilises the expertise of practitioners from the industry. The paper provides a valuable addition to the existing literature where empirical evidence is scarce. From a practical perspective, it offers support to the design of man-hour efficient kit preparation systems. The findings show that the design and the context of the kit preparation system can have a decisive, yet complex, impact on the man-hour efficiency and, thereby, on an assessment of the applicability of kitting. The paper identifies several important aspects of both design and context and indicates how these aspects are linked to the man-hour efficiency of kit preparation.
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| 9. |
- Hanson, Robin, 1981, et al.
(författare)
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Manual picking from flat and tilted pallet containers
- 2018
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Ingår i: International Journal of Industrial Ergonomics. - : Elsevier BV. - 1872-8219 .- 0169-8141. ; 64, s. 199-212
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Tidskriftsartikel (refereegranskat)abstract
- Manual picking operations commonly occur both in distribution settings and within manufacturing industry and may consume large proportions of the working day for operators, with associated potential problems of poor postural ergonomics and low time efficiency. As a remedy to such problems, alternative material layouts like tilted material pallets may be an attractive solution. This study provides quantitative empirical evidence comparing the relative merits and drawbacks of flat and tilted pallet configurations, with regard to physical ergonomic loading and time consumption. This was explored with an experimental setup at the site of an industrial company, where various representative picking operators were observed while emptying flat and tilted pallets. The observation was video recorded and subjected to a time study and Rapid Entire Body Assessment (REBA). Results showed that there are differences in picking time and physical workload depending on where in the pallet the picking action takes place, and that flat and tilted pallets bring different postural opportunities and challenges for different operator percentiles in the working population. An overview of postural ergonomics consequences and their associated risk levels are shown, and the results serve to further increase the understanding of which factors are affected by choosing between a tilted or flat component presentation. This understanding is highly relevant to industry, where it can contribute to the design of both efficient and ergonomically sound processes for manual picking operations.
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| 10. |
- Chavez, Zuhara, et al.
(författare)
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Digital Tools and Information Needs Assessment for Efficient Deviation Handling in SMEs
- 2020
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Ingår i: Advances in Transdisciplinary Engineering at SPS2020. - : IOS Press BV. - 9781614994398 ; , s. 24-35
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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
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