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Availability analysis and optimal inspection policy for systems with neglected down time

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  • Qingan Qiu
  • Lirong Cui
  • Dejing Kong

Abstract

Many practical systems are subject to neglected down time, i.e., if the down time is less than a given threshold, then the system can be considered as working during the down time. Otherwise, the system is considered as in the failure state. This paper investigates the availability and maintenance policy for inspected systems with neglected down time. The instantaneous and steady-state availabilities of the system are derived analytically. Furthermore, a maintenance model is developed to find the optimal inspection interval, T*, which minimizes the long-run average cost rate. Based on the developed maintenance model, the analytical properties of the optimal inspection policy are explored. Numerical examples on ventilator system calculating the availability and optimal inspection policy are given to illustrate the applicability of the proposed model.

Suggested Citation

  • Qingan Qiu & Lirong Cui & Dejing Kong, 2019. "Availability analysis and optimal inspection policy for systems with neglected down time," Communications in Statistics - Theory and Methods, Taylor & Francis Journals, vol. 48(11), pages 2787-2809, June.
    • Handle: RePEc:taf:lstaxx:v:48:y:2019:i:11:p:2787-2809
    DOI: 10.1080/03610926.2018.1473425
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    Cited by:

    1. Lijun Shang & Baoliang Liu & Kaiye Gao & Li Yang, 2023. "Random Warranty and Replacement Models Customizing from the Perspective of Heterogeneity," Mathematics, MDPI, vol. 11(15), pages 1-22, July.
    2. Liu, Peng & Wang, Guanjun, 2022. "Minimal repair models with non-negligible repair time," Reliability Engineering and System Safety, Elsevier, vol. 217(C).
    3. Chengye Ma & Yongjun Du & Lijun Shang & Li Yang & Kaiye Gao, 2023. "Random Maintenance Strategy Modeling of Warranted Products with Reliability Heterogeneity," Sustainability, MDPI, vol. 15(18), pages 1-19, September.

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