Optimal N-policy for the maintenance of k-out-of-n systems with dynamic minor repairs considering second-hand component income

Fatemeh Safaei, Jafar Ahmadi and Mitra Fouladirad

International Journal of Production Research, 2023, vol. 61, issue 17, 5956-5973

Abstract: This paper proposes a maintenance policy for a k-out-of-n: F system operating to fulfil several jobs without interruptions. The system is replaced when the Nth job completes or at the kth failure, whichever occurs first. So, there are some non-failed components when a replacement is done. These components can be sold as second-hand products to continue working in other systems for a while. The price of them is also considered in the proposed maintenance policy. An optimal maintenance policy is studied to minimise long-run average cost under the constraint of relative mean operating time. Comprehensive numerical studies are done to assess the effect of the model parameters on the optimal solutions. Also, to demonstrate the applicability of the proposed plan, a data set related to wind turbine generator failures is considered as a case study.

Date: 2023
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DOI: 10.1080/00207543.2022.2120107

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