Hybrid preventive maintenance of competing failures under random environment

Li Yang, Yu Zhao, Rui Peng and Xiaobing Ma

Reliability Engineering and System Safety, 2018, vol. 174, issue C, 130-140

Abstract: Competing failures are extensively observed in complex industrial systems, which may result in tremendous economic losses and safety hazards. In this article, we study a system subject to two typical failure modes, degradation-based failure and sudden failure. The system is operating under a random environment where external shocks arrive according to a Poisson process. The impact of shock damage on system failure is two-fold: (a) increase the hazard rate of sudden failure; (b) cause abrupt degradation increment. The system is preventively replaced when its age attains a pre-determined threshold (age-based replacement), and undergoes a finite number of condition monitoring (CM) before this replacement. At a CM, the control limit of preventive replacement varies with the number of CM and is determined by a reliability criterion. The objective of this paper is to jointly optimize the replacement interval, monitoring interval and reliability criterion such that the expected cost per unit time is minimized. A case study on oil pipeline is provided to illustrate the applicability of the maintenance strategy.

Keywords: Maintenance; Competing failures; Random environment; Non-constant control limit (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (52)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:174:y:2018:i:c:p:130-140

DOI: 10.1016/j.ress.2018.02.017

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