2 - Stage Optimal Design and Analysis for Disassembly System with Environmental and Economic Parts Selection Using the Recyclability Evaluation Method
2 - Stage Optimal Design and Analysis for Disassembly System with Environmental and Economic Parts Selection Using the Recyclability Evaluation Method
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DOI：
10.7232/iems.2014.13.1.052
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发表时间：
2014-03
影响因子：
0.7
通讯作者：
Kento Igarashi;Tetsuo Yamada;M. Inoue
中科院分区：
文献类型：
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作者：
Kento Igarashi;Tetsuo Yamada;M. Inoue
推广闭环式供应链需要回收报废(EOL)组装产品的拆卸系统。为了操作回收拆卸系统，在非破坏性或破坏性拆卸的情况下，以环境和经济的方式进行部件选择，并确定整个下线产品的回收率。随着拆卸零件数量的增加，回收利用率基本提高。然而，人工成本也增加了，带来了较低的利润，这是回收材料价格与拆卸成本之间的差额。另一方面，由于产品拆卸任务之间的优先关系也随着零部件选择的不同而变化，因此在设计拆卸生产线时也需要对任务进行优化分配。此外，由于这样的设计需要信息，因此每个部件的回收率、利润和拆卸任务次数在拆卸任务中占有优先地位。然而，在收集实际的EOL产品之前，很难提前获得这些信息。本研究提出并分析了一种将整数规划与环境与经济部件选择相结合的拆卸系统优化设计(Igarashi等人，2013)，该系统利用日立株式会社开发的可回收性评价方法(REM)来协调回收利用率和利润。第一阶段是用带e约束的整数规划优化环境与经济部件选择，第二阶段是用整数规划来优化生产线平衡，以最小化工位数量。第一阶段和第二阶段是一般的数学公式，并在手机、计算机和清洁工的情况下分析了它们之间的关系。
Promotion of a closed-loop supply chain requires disassembly systems that recycle end-of-life (EOL) assembled products. To operate the recycling disassembly system, parts selection is environmentally and economically carried out with non-destructive or destructive disassembly, and the recycling rate of the whole EOL product is determined. As the number of disassembled parts increases, the recycling rate basically increases. However, the labor cost also increases and brings lower profit, which is the difference between the recovered material prices and the disassembly costs. On the other hand, since the precedence relationships among disassembly tasks of the product also change with the parts selections, it is also required to optimize allocation of the tasks in designing a disassembly line. In addition, because information is required for such a design, the recycling rate, profit of each part and disassembly task times take precedence among the disassembly tasks. However, it is difficult to obtain that information in advance before collecting the actual EOL product. This study proposes and analyzes an optimal disassembly system design using integer programming with the environmental and economic parts selection (Igarashi et al., 2013), which harmonizes the recycling rate and profit using recyclability evaluation method (REM) developed by Hitachi, Ltd. The first stage involves optimization of environmental and economic parts selection with integer programming with e constraint, and the second stage involves optimization of the line balancing with integer programming in terms of minimizing the number of stations. The first and second stages are generally and mathematically formulized, and the relationships between them are analyzed in the cases of cell phones, computers and cleaners.