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Towards facilitating circular product life-cycle information flow via remanufacturing
Linköping University, Department of Management and Engineering, Manufacturing Engineering. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Manufacturing Engineering. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Management and Engineering, Manufacturing Engineering. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-2552-3636
2015 (English)In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 29, p. 780-785Article in journal (Refereed) Published
Abstract [en]

In order to achieve a sustainable development, circular economy approaches and circular material flows are explored in industry. However, circular information flows remain essentially unestablished. The aim of this paper is to: 1) explore categories and types of product life-cycle information available for remanufacturing; 2) identify constraints for efficient product life-cycle information flow via remanufacturing; and 3) propose initiatives to facilitate product life-cycle information flow via remanufacturing.

Data was collected through workshops and interviews at five remanufacturing companies. An accumulated Sankey diagram illustrates product life-cycle information flow, losses and bottleneck. Based on the analysis, possible initiatives to facilitate efficient product life-cycle information flow via remanufacturing are presented.

Place, publisher, year, edition, pages
Elsevier, 2015. Vol. 29, p. 780-785
Keyword [en]
Remanufacturing; Product life-cycle stackeholder; Feedback; Feed forward; Sankey diagram
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:liu:diva-120761DOI: 10.1016/j.procir.2015.02.162ISI: 000356146100132OAI: oai:DiVA.org:liu-120761DiVA, id: diva2:848175
Conference
22nd CIRP Conference on Life Cycle Engineering (LCE), Univ New S Wales, Sydney, AUSTRALIA, April 7-9, 2015
Projects
Återprodukt, KEAP2
Funder
VINNOVA
Available from: 2015-08-24 Created: 2015-08-24 Last updated: 2018-05-17Bibliographically approved
In thesis
1. Lean Remanufacturing: Reducing Process Lead Time
Open this publication in new window or tab >>Lean Remanufacturing: Reducing Process Lead Time
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Remanufacturing is a product recovery option in which used products are brought back into useful life. While the remanufacturing industry stretches from heavy machinery to automotive parts, furniture, and IT sectors, it faces challenges. A majority of these challenges originate from the remanufacturing characteristics of having little control over the core (the used product or its part), high product variation, low product volumes, and a high proportion of manual work, when compared to manufacturing. Some remanufacturing challenges appear to be process challenges that prolong process lead time, making remanufacturing process inefficient.

Lean is an improvement strategy with roots in the manufacturing industry. Lean helps to increase customer satisfaction, reduce costs, and improve company’s performance in delivery, quality, inventory, morale, safety, and other areas. Lean encompasses principles, tools and practices to deal with e.g. inefficient processes and long process lead times. Therefore, in this thesis lean has been selected as an improvement strategy to deal with long remanufacturing process lead times.

The objective of this thesis is to expand knowledge on how lean can reduce remanufacturing process lead time. This objective is approached through literature studies and a case study conducted at four remanufacturing companies. There are five challenges that contribute to long process lead time: unpredictable core quality, quantity, and timing; weak collaboration, information exchange, and miscommunication; high inventory levels; unknown number of required operations in process and process sequence; and insufficient employee skills for process and product upgrade. When analysing the case companies’ process lead times it was found that there is a need to reduce waiting times, which account for 95 to 99 per cent of process lead times at three of the four companies.

To improve remanufacturing process efficiency and reduce remanufacturing process lead time six lean practices are suggested: product families; kanban; layout for continuous flow; cross functional teams; standard operating procedures; and supplier partnerships. The suggested lean practices have a key focus on reducing waiting time since it prolongs the process lead time. This thesis contributes to lean remanufacturing research with the case study findings on lean practices to reduce remanufacturing process lead time and increase process efficiency.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2018. p. 70
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1938
Keyword
Circular Economy, Lean Production, Toyota Production System, Value Stream Mapping, Remanufacturing Process Challenges and Improvements, Process Efficiency
National Category
Production Engineering, Human Work Science and Ergonomics Reliability and Maintenance
Identifiers
urn:nbn:se:liu:diva-147875 (URN)10.3384/diss.diva-147875 (DOI)9789176853030 (ISBN)
Public defence
2018-06-14, ACAS, A building, Campus Valla, Linköping, 09:15 (Swedish)
Opponent
Supervisors
Available from: 2018-05-17 Created: 2018-05-17 Last updated: 2018-05-22Bibliographically approved

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Kurilova-Palisaitiene, JelenaLindkvist, LouiseSundin, Erik
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