Optimal maintenance strategy for systems with two failure modes

Rui Peng, Bin Liu, Qingqing Zhai, Wenbin Wang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper considers a single-unit system subject to two types of failures: a traditional catastrophic failure and a two-stage delayed failure. Periodic inspections are carried out to identify the defective stage of the two-stage failure process, whereas preventive replacements are implemented to avoid any potential failure due to the catastrophic failure mode. We construct a basic maintenance model and then extend it to the cases of imperfect inspections (i.e., inspections that do not always notice a defective state). We analyze the renewal process of the system and establish the expected long-run cost rate (ELRCR). The optimal inspection period and preventive replacement interval are determined by minimizing the ELRCR. A case study on infusion pumps is presented to illustrate the proposed model.

LanguageEnglish
Pages624-632
Number of pages9
JournalReliability Engineering and System Safety
Volume188
Early online date29 Jul 2017
DOIs
Publication statusPublished - 31 Aug 2019

Fingerprint

Failure Mode
Failure modes
Maintenance
Inspection
Long-run
Replacement
Renewal Process
Costs
Imperfect
Pump
Pumps
Strategy
Interval
Unit
Model

Keywords

  • periodic inspection
  • preventive replacement
  • delay-time
  • two-stage failure process
  • imperfect inspection

Cite this

Peng, Rui ; Liu, Bin ; Zhai, Qingqing ; Wang, Wenbin . / Optimal maintenance strategy for systems with two failure modes. In: Reliability Engineering and System Safety. 2019 ; Vol. 188. pp. 624-632.
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Optimal maintenance strategy for systems with two failure modes. / Peng, Rui; Liu, Bin; Zhai, Qingqing; Wang, Wenbin .

In: Reliability Engineering and System Safety, Vol. 188, 31.08.2019, p. 624-632.

Research output: Contribution to journalArticle

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