A methodology for modeling and adaptive planning of disassembly processes

A principal process during the remanufacturing of worn-out or malfunctionin g products is disassembly th;lt enables the dumping, cleaning, repair or re placement of components as desired. Products subjected to disassembly exhib it uncertainty in the product structure and component conditions. Hence the termination Real (the level of disassembly) is subject to change, and the disassembly plan must be adapted. This paper proposes a mathematically soun d disassembly Petri net (DPN) for the modeling and adaptive planning of dis assembly processes. The planning algorithm guarantees the optimal remanufac turing value when each node's utility function (benefit of a subassembly or part and cost of a disassembly operation) is fixed. it can be modified to deal with the cases when the disassembly operation success rates vary with the product condition and reliability of resources performing the operation s, The proposed methodology and algorithms are demonstrated through the sam ple disassembly of a telephone.