Condition-based maintenance policies for a multi-unit deteriorating system subject to shocks in a semi-Markov operating environment. Issue Volume 32:Issues 3(2020) (2nd July 2020)

• Record Type: Journal Article
• Authors: Mahmoodi, Safieh; Hamed Ranjkesh, Somayeh; Zhao, Yiqiang Q.
• Is Part Of: Quality engineering. Volume 32:Issues 3(2020)
• Page Start: 286
• Page End: 297
• Publication Date: 2020-07-02
• Subjects: maintenance -- semi-Markov process -- dynamic environment -- availability -- deterioration; 90B25 -- 60K20 -- 60J20 -- 60K37; Quality control -- Periodicals; Production management -- Quality control -- Periodicals; 658.5
• DOI: 10.1080/08982112.2020.1731754
• Languages: English
• ISSNs: 0898-2112

Abstract

Abstract: In this paper, we consider k out of n identical parallel unit systems experiencing deterioration due to random shocks in semi-Markov environments. It is assumed that the occurrence rate of random shocks and the corresponding failures probability are both affected by dynamical environment conditions. We discuss how the semi-Markov environment process can be converted to a Markov process. The systems are maintained through inspections and replacements under some new maintenance policies. The long-run availability and the average cost of the proposed systems are formulated. Finally, we illustrate our results using numerical examples and simulations.