Optimal maintenance policy for a k-out-of-n system with replacement first and last

Chin-Chih Chang ()
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Chin-Chih Chang: Takming University of Science and Technology

Annals of Operations Research, 2023, vol. 323, issue 1, No 2, 43 pages

Abstract: Abstract In this paper, an optimal maintenance policy is developed for a k-out-of-n system that works in a random cycle. A k-out-of-n system, which consists of $$n$$ n independent components and functions if at least $$k$$ k of the $$n$$ n components function, is one of the most important systems in reliability engineering. Consider that a component suffers from either minor or catastrophic failure, which is minimally repaired or lying idle, respectively. When $$n - k + 1$$ n - k + 1 idle components occur, the system completely fails and undergoes corrective replacement. The notations of preventive replacement first and last are adopted; in other words, the system undergoes preventive replacement before complete failure at a planned time or at a random working time, whichever occurs first or last. The present paper aims to develop a two-stage maintenance methodology for a k-out-of-n system, and determine the optimal number of components and preventive replacement time that minimize the mean cost rate functions, respectively. For each model, the mean cost rate function is formulated analytically and the optimization problem is solved theoretically. Finally, a numerical example is given to demonstrate the applicability of the methodology derived from this paper. The proposed models provide a more general framework to analyze the maintenance policy for the k-out-of-n system.

Keywords: Maintenance; Replacement; Minimal repair; Random working time; Optimization (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s10479-023-05236-2

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