Ruey Huei Yeh

TL;DR: In this paper, the authors presented algorithms for deriving optimal maintenance policies to minimize the mean long-run cost-rate for continuous-time Markov deteriorating systems, where the degree of deterioration (except failure) of the system is known only through inspection.

TL;DR: There exists a unique optimal policy such that the expected total warranty cost is minimized and the impact of providing preventive maintenance within a warranty period is illustrated through a numerical example.

TL;DR: It is shown that there exists a unique optimal production run length such that the expected total cost per item is minimized and an approximate solution is derived.

TL;DR: An efficient algorithm is developed to derive the optimal PM policy and a closed-form solution is obtained for the case where the lifetime distribution of the equipment is Weibull and the expected total cost is compared with the performance of other policies under various maintenance schemes through numerical examples.

TL;DR: It is shown that the optimal replacement period for a warranted product should be adjusted toward the end of the warranty period, and cost models developed for both a warranted and a non-warranted product are compared.