Integrated disassembly and reprocessing lot-sizing for multi-level structured products in remanufacturing systems. Issue 9 (2nd September 2022)

• Record Type: Journal Article
• Authors: Doh, Hyoung-Ho; Lee, Dong-Ho
• Is Part Of: Engineering optimization. Volume 54:Issue 9(2022)
• Page Start: 1476
• Page End: 1493
• Publication Date: 2022-09-02
• Subjects: Remanufacturing -- multi-level disassembly structure -- dynamic lot-sizing -- heuristics; Engineering design -- Periodicals; Mathematical optimization -- Periodicals; 620.0042
• DOI: 10.1080/0305215X.2021.1940990
• Languages: English
• ISSNs: 0305-215X

Abstract

Abstract : This study addresses a dynamic lot-sizing problem for remanufacturing systems in which end-of-use/life products are disassembled into their parts on a single disassembly workstation and then each part is reprocessed on one of the parallel reprocessing workstations. The problem, which integrates disassembly and reprocessing lot-sizing for multi-level disassembly structures, determines disassembly and reprocessing lot-sizes as well as the workstation on which each part is reprocessed, while satisfying workstation capacities and reprocessed part demands in each period of a planning horizon. An integer programming model is developed that minimizes the sum of set-up, operation and inventory costs. After the NP hardness is shown, two-stage heuristics are proposed in which an initial solution is obtained and then improved by full and partial bi-directional moves. Computational results show that the full move-based heuristic gives near-optimal solutions for small-sized instances and the partial move-based heuristic gives fast solutions with appropriate qualities.