Availability of Large Scale Repairable Systems with Imperfect Repair

Abstract

Operational systems consist of components that deteriorate and eventually fail. Upon failure, components are either repaired or replaced. Cheap and critical components are usually replaced, while expensive and non-critical ones are repaired before replacement. In this research work, repairable systems undergoing imperfect repair are examined where upon failure each component is repaired several times before being replaced. The main objective is to assess systems' performance by measuring the asymptotic availability. Closed forms analytical expressions are derived for the availability of some non-complicated systems while simulation is used to asses and analyze the performance of complex systems.

Reliability Measures Analysis of an Industrial System under Standby Modes and Catastrophic Failure

“…The authors discussed the reliability analysis of a system subject to partial, degraded and catastrophic failure (Feinberg and Widom, 1996;Nikolaidis et al, 2004;Mili et al, 2004;Li and Pham, 2005). Hajeeh (2012Hajeeh ( , 2013Hajeeh ( , 2014Hajeeh ( , 2015 studied the imperfect repair technique where a failed component is repaired several times before complete replacement, in various system applications similar to performance of two-component systems; optimizing series repairable systems; large scale repairable systems analysis; analysis of a standby system with dissimilar components and found the various reliability measures like steady state availability, cost analysis etc.…”