Abstract
With the e-waste generating rapidly, the capacity of landfill sites are not enough. Therefore, there’s a growing demand to dispose of old products in a constructive way by removing hazardous materials, retrieving reusable components, and recycling, thereby to reduce the e-waste and meet the international regulations about disposal of waste electrical and electronic equipment. Design for disassembly means to consider the disassembly job while in design stage. With limited resources, designers have to start with critical design requirements in order to improve disassemblability of products. However, there is no information about which approach they propose is most helpful to disaseemblability when redesigning. The objective of this study is to develop a structured method which can provide the priorities of design requirements for designers and help them to make decisions in design stage. The methodology integrates criteria of disassemblability, design requirements, and priorities through advices from experts. Designers can choose the critical design requirements according to the priorities, and then work on them in detail. Mobile phone is taken as an example of the application. First, Analytic Network Process is used to determine the weights of criteria. Then, the Delphi method is applied to develop design requirements. Finally, Quality Function Deployment combines the outputs from foregoing steps. Through the process of integration, calculates the weights of the design requirements and their priorities.