Extended Replacement Policy for a Regular Overhauling Deteriorating Repairable System

Abstract

To study a regular overhauling deteriorating repairable system, a new maintenance and replacement policy is proposed. Assume that the regular overhauling is “as good as old” and the repair after failures is not “as good as new”. The system is not working during the period of its regular overhauling and its effective age is not effected by its regular overhauling. Under these assumptions, the effective age T of the system is applied as a replacement policy and the long-run expected profit per unit time is adopted as an objective function. By using extended geometric process theory and renewal process theory, the mathematic model is established and the explicit expression of the long-run expected profit per unit time is derived. This model can be used as reference to the failure system maintenance and replacement.