Reliability and maintenance modeling for systems subject to multiple dependent competing failure processes

Hao Peng, Qianmei Feng, David W. Coit

Research output: Contribution to journalArticle

184 Citations (Scopus)

Abstract

For complex systems that experience Multiple Dependent Competing Failure Processes (MDCFP), the dependency among the failure processes presents challenging issues in reliability modeling. This article, develops reliability models and preventive maintenance policies for systems subject to MDCFP. Specifically, two dependent/correlated failure processes are considered: soft failures caused jointly by continuous smooth degradation and additional abrupt degradation damage due to a shock process and catastrophic failures caused by an abrupt and sudden stress from the same shock process. A general reliability model is developed based on degradation and random shock modeling (i.e., extreme and cumulative shock models), which is then extended to a specific model for a linear degradation path and normally distributed shock load sizes and damage sizes. A preventive maintenance policy using periodic inspection is also developed by minimizing the average long-run maintenance cost rate. The developed reliability and maintenance models are demonstrated for a micro-electro-mechanical systems application example. These models can also be applied directly or customized for other complex systems that experience multiple dependent competing failure processes.

Original languageEnglish (US)
Pages (from-to)12-22
Number of pages11
JournalIIE Transactions (Institute of Industrial Engineers)
Volume43
Issue number1
DOIs
StatePublished - Jan 1 2011

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Degradation
Preventive maintenance
Large scale systems
Inspection
Costs

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering

Keywords

  • Multiple dependent competing failure processes
  • degradation
  • micro-electro-mechanical systems reliability
  • preventive maintenance
  • random shocks

Cite this

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Reliability and maintenance modeling for systems subject to multiple dependent competing failure processes. / Peng, Hao; Feng, Qianmei; Coit, David W.

In: IIE Transactions (Institute of Industrial Engineers), Vol. 43, No. 1, 01.01.2011, p. 12-22.

Research output: Contribution to journalArticle

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