Optimization of Two-Dimensional Extended Warranty Scheme for Failure Dependence of a Multi-Component System with Improved PSO–BAS Algorithm

Human society is entering the era of Industry 4.0; engineering systems are becoming more complex, which increases difficulties maintenance support work. Failure dependence exists widely in multi-component systems. In this work, a model two-dimensional (2D) warranty decision making was constructed by using failure-dependence analysis for and considering extended cost system availability. The to cut as much possible manufacturers, while constraint condition minimum acceptable availability customer. combined preventive well corrective strategies. Under that replaced upon expiration (EW), optimal 2D EW duration interval could be obtained through model. case analysis, scheme gearbox an electric multiple unit (EMU) grid search algorithm, PSO PSO–BAS algorithm. Through comparison, algorithm better with lower costs higher A comparative sensitivity showed provides theoretical basis manufacturers optimize their warranties.