A Study on Evaluation Methods for Product Deterioration and Parts Re-Use towards Inverse Manufacturing

本研究的目的是建立一个基本的方法，用于评估产品在产品操作和零件重复使用的情况下，对闭环环境意识的制造维护产品退化。从逆向制造的观点来看，目前商品家电和电子信息设备在产品再利用后没有得到适当的处理，因此本研究选取这两类产品作为研究对象。对以下问题进行了调查。(1)闭环制造环境下的产品生命周期优化设计研究了利用零部件再利用和功能升级来探索产品生命周期的变化，从而设计出最优的产品生命周期的方法。(2)评价产品劣化的方法通过广泛的计算机模拟研究了预测产品使用过程中物理产品劣化的方法。(3)为了准确评价新产品制造过程中零部件的可重用性，研究了零部件的质量保证方法，并以复印机和家用空调为例，对所开发的零部件质量保证方法和软件进行了验证。结果可以推广到其他类型的产品。

The aim of this research is to establish a basic methodology for evaluating product deterioration during product operation and parts re-use in case of maintenance towards closed loop environmentally conscious manufacturing. In this research, commodity household appliances and electronic information devices are selected as examples, because currently they are not properly treated after product re-used form the standpoint of inverse manufacturing. The following issues have been investigated.(1) Optimal Life Cycle Design for Closed Loop ManufacturingMethods are considered for designing optimal life cycle by exploring varieties of product life cycle by use of parts re-use and functional up-grade.(2) Methods for Evaluating Product DeteriorationMethods for predicting physical product deterioration during product usage has been investigated by use of extensive computer simulation.(3) Methods for Evaluation Re-Usability of Used PartsMethods for quality assurance of used-parts are studied for precise evaluation of parts re-usability for manufacturing new products.The developed methods and associated software are verified by doing design case study for copiers and home air-conditioners. The results can be extended for other types of products.