Disassembly Petri net approach to modeling and planning disassembly processes of electronic products

A principal process during the remanufacturing of worn-out or malfunctioning products is disassembly that enables the dumping, cleaning, repair or replacement of components as desired. Products subjected to disassembly exhibit uncertainty in the product structure and component conditions. Hence the termination goal (the level of disassembly) is subject to change, and the disassembly plan must be adapted. This paper proposes a disassembly Petri net (DPN) for the modeling and adaptive planning of disassembly processes. The proposed methodology and algorithms are demonstrated in the paper through the sample disassembly of a telephone.