کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
806270 | 905285 | 2006 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A deteriorating two-system with two repair modes and sojourn times phase-type distributed A deteriorating two-system with two repair modes and sojourn times phase-type distributed](/preview/png/806270.png)
We study a two-unit cold standby system in steady-state. The online unit goes through a finite number of stages of successive degradation preceding the failure. The units are reparable, there is a repairman and two types of maintenance are considered, preventive and corrective. The preventive repair aims to improve the degradation of a unit being operative. The corrective repair is necessary when the unit fails. We will assume that the preventive repair will be interrupted in favour of a corrective repair in order to increase the availability of the system. The random operational and repair times follow phase-type distributions. For this system, the stationary probability vector, the replacement times, and the involved costs are calculated. An optimisation problem is illustrated by a numerical example. In this, the optimal degradation stage for the preventive repair of the online unit is determined by taking into account the system availability and the incurred costs.
Journal: Reliability Engineering & System Safety - Volume 91, Issue 1, January 2006, Pages 1–9