A study on the optimal disassembly process planning for the consumer products based on the evaluation of recyclability and disposability

本研究的目的是发展一个最佳拆解、粉碎及物料分类程序的电脑辅助规划，以评估消费性电器产品的回收性、可处理性及程序所需的成本，研究结果归纳如下：（1）正式定义了“拆解、粉碎及物料分类程序的最佳规划”问题。问题是确定拆卸、切碎和材料分类活动的顺序是否以及如何将给定的退役产品转化为满足指定检索条件的形式。(2)提出了三种图形式化、统一地表达产品和工艺结构的拆卸、切碎和排序方法。(3)在图模型中，拆卸、分解和分拣的规划可以看作是图结构和节点属性的变化。讨论了这些变化的规则和程序。(4)家电产品的几个案例分析（电动剃须刀和吸尘器）的实例证明了所提出的基于图模型、应用规则和转换过程的拆卸、切碎和分类优化策略的有效性。据证实，拟议的计算机-基于可回收性和可丢弃性评价的消费品辅助最优拆卸过程规划是有效的。

The purpose of this research is to develop the computer aided planning of an optimum disassembly, shredding and material sorting process for the consumer electric appliances by evaluating both of their recyclability and disposability, and required costs of the process.The results of this research are summarized as follows ;(1) The problem of "an optimum process planning for disassembly shredding and material sorting" was formally defined. The problem is to determine whether and how sequences of disassembly, shredding and material sorting activities can transform a given retired product into forms which satisfy specified retrieval conditions.(2) Three graphs were proposed to formally and uniformly express product and process structures in disassembly, shredding and sorting.(3) The planning of disassembly, shredding and sorting could be recognized as changes of the graph structures and node attributes in graph-based model. Rules and procedures for these changes were discussed.(4) Several case study on the home electric appliances (electric shaver and cleaner) proved that an effectiveness of the proposed strategies for finding an optimum disassembly, shredding and sorting process based on proposed graph-based models, application rules and transforming procedures.From these results, it was confirmed that the proposed computer-aided optimal disassembly process planning for the consumer products based on the evaluation of recyclability and disposability was effective.