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

本研究的目的是通过评估家用电器的可回收性和一次性以及所需的成本，来开发针对家用电器的最优拆卸、粉碎和物料分拣工艺的计算机辅助规划。问题是确定拆卸、粉碎和分拣活动的顺序是否以及如何将给定的退役产品转换为满足指定检索条件的形式。(2)提出了三个图来形式化、统一地表示拆卸、粉碎和分拣过程中的产品和工艺结构。(3)在基于图的模型中，拆卸、粉碎和分拣的规划可以识别为图结构和节点属性的变化。通过对家用电器(电动剃须刀和清洁剂)的实例研究，验证了所提出的基于图论模型、应用规则和转化过程的最优拆卸、粉碎和分拣过程策略的有效性，从而验证了基于可回收性和一次性评价的消费品拆卸过程计算机辅助优化规划的有效性。

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.