Petri Nets and X-CDSM based Disassembly Sequences Improvement of Complex Products Family

The identification of the optimal disassembly sequences of complex products is very important for the evaluation at the early design stage of its maintainability and the analysis of its recyclability at the end of life. Several tools can be used to reach this goal (genetic algorithms, graphs, Petri nets, etc.). However, methodologies based on these tools do not take into account information such as the accessibilities and the positions of the links and the criticalities and the reliabilities of the components. They generally focused on a single system too. Thus, we propose in this paper a methodology based on Petri Nets, using eXtended Conceptual Design Semantic Matrix (X-CDSM) and new disassembly indicators for improving optimal disassembly sequences of complex system's families at the early design stage.