イノウエ　マサト   INOUE Masato   井上　全人    所属   明治大学  理工学部    職種   専任教授
言語種別	英語
発行・発表の年月	2013/07
形態種別	学術雑誌
標題	Disassembly System Design with Environmental and Economic Parts Selection using Recyclability Evaluation Method
執筆形態	共著(筆頭者以外)
掲載誌名	Journal of Japan Industrial Management Association
巻・号・頁	64(2E),pp.293-302
著者・共著者	Kento Igarashi, Tetsuo Yamada and Masato Inoue
概要	To promote a closed-loop supply chain for assembly products, disassembly systems are required to recycle End-of-Life (EOL) products. To increase the total recycling rate of a product at the disassembly systems, it is desirable to keep rather than destroy parts since disassembly costs are increasing. Therefore, a disassembly system design is considered by selecting parts to disassemble in order to minimize the recycling cost while maintaining the recycling rate. On the other hand, since the precedence relation among disassembly tasks of the product also changes with these parts selection, it is required to consider allocation of the tasks in designing a disassembly line. For the disassembly system design, disassembled product information is also necessary such as the recycling rate and profit of each part, disassembly task times and a precedence relation among the disassembly tasks. This study proposes the disassembly system design with environment and economic part selection, which harmonizes the recycling rate and cost by using Recyclability Evaluation Method (REM) provided with Hitachi, Ltd. The first step is to optimize environmental and economic parts selection with integer programming, and the second step is the line balancing in terms for reducing the number of stations. Next, a design example is shown and discussed by preparing a 3D-CAD model for computer and cleaner. Finally, the product and line evaluation are carried out by comparing among 4 scenarios, such as 1) All parts disassembled, 2) Recycling rate maximum, 3) Recycling cost minimum and 4) Recycling rates and cost coexistence. It is demonstrated that the recycling cost was reduced maintaining higher recycling rate and that the numbers of work stations and the smoothness index were also improved with the environmental and economic parts selection.