A condition-based maintenance policy with non-periodic inspection for k-out-of-n: G systems

Yongchao Liu, Guanjun Wang and Peng Liu

Reliability Engineering and System Safety, 2024, vol. 241, issue C

Abstract: This paper studies a condition-based maintenance policy for k-out-of-n: G systems subject to economic dependence. All components in the system are identical and unrepairable, with an exponential lifetime distribution. The state of the system is not self-announcing, which can only be revealed by inspection. At each inspection moment, the maintenance decision and the next inspection plan are made according to the system status revealed by the inspection. The optimal maintenance strategy can be obtained in three steps. Firstly, a dynamic programming approach is used to determine the sequence of optimal inspection intervals gradually. Secondly, a searching method is used to optimize the preventive maintenance threshold of the system based on the renewal process theory. Thirdly, the optimal number of components that constitutes the redundant system is decided. Furthermore, the average availability and mean time to failure of the system are also derived iteratively. The effectiveness of the proposed maintenance policy is validated by a 5-out-of-n: G system. Numerical comparison with the periodic inspection policy shows the outstanding performance of the proposed maintenance policy.

Keywords: Condition-based maintenance policy; Economic dependence; Dynamic programming approach; Inspection; k-out-of-n: G system (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:241:y:2024:i:c:s0951832023005549

DOI: 10.1016/j.ress.2023.109640

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