On a dynamic preventive maintenance policy for a system under inspection

A condition-based replacement and spare provisioning policy for deteriorating systems with uncertain deterioration to failure

“…In fact, their condition-based replacement policies assume in advance that the number of available spares on hand is infinite and each desired spare could be provided immediately. Similarly, most of other studies (Amari and McLaughlin, 2004;Barbera et al, 1996Barbera et al, , 1999Chen et al, 2003;Chu et al, 1998;Coolen and Dekker, 1995;Marseguerra et al, 2002;Moustafa et al, 2004;Park, 1998;Pellegrin, 1992;Wang, 2003) for CBM policies also suppose that unlimited spare parts are always available. Unfortunately, there exist several kinds of time lag between the desire/order of spares and their arrival.…”

“…There exist two main types of modeling methods for CBM policies. One is described by the Markov decision process (Amari and McLaughlin, 2004;Chen et al, 2003;Coolen and Dekker, 1995;Marseguerra et al, 2002;Moustafa et al, 2004), where the deteriorating process is considered as a multi-state system. The objective of these models is to determine the states for which the unit is replaced in order to gain the minimum expected maintenance cost.…”

A condition-based maintenance policy for multi-component systems with Lévy copulas dependence

“…During the last few decades, maintenance policies have been widely developed for single-unit systems subjected to various degradation models, e.g. Gamma process [1,2], Wiener process [3] and Markov chains [4], to name a few. Some recent works take account for the impact of the system environment [5,6] or heterogeneity among components regarding their parameters within a population sharing the same degradation model [7,8].…”

A general maintenance policy for a multi-state deterioration system with multiple choices of imperfect maintenances

“…Su et al [9] proposed a maintenance policy for a multistate system with multiple choices of imperfect actions through minimizing the expected total discounted cost over planning life cycle years. Chen et al [10] also proposed a maintenance policy for such a system under continuous inspection and with multiple choices of imperfect actions to determine at each inspection time nd the optimal action to get the lowest expected total operating cost over the planning periods.…”