The quantification of the relating degree of parts based on the fuzzy synthesizing evaluation method

In the planning of a product´s disassembly sequence, the difficulty of disassembly path analysis can be decreased extremely, when some components are disassembled as a sub-assembly at the same time. In order to decrease the complexity of disassembly analysis and achieve the auto-building of disassembly paths, the sub-assembly should be identified first. The concept of relating degree is put forward in this paper, and it is used as a measurement of sub-assemblies identification. The product relation matrix C˜ is built based on the relating degree. It is possible for the sub-assemblies to be clustered according to the matrix by using a fuzzy clustering method. As some components are disassembled as a sub-assembly, the problem of combination explosion can also be solved efficiently