Using PoF models to predict system reliability considering failure collaboration

Existing Physics-of-Failure-based （PoF-based） system reliability prediction methods are grounded on the independence assumption, which overlooks the dependency among the compo- nents. In this paper, a new type of dependency, referred to as failure collaboration, is introduced and considered in relia...

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Bibliographic Details
Published inChinese journal of aeronautics Vol. 29; no. 5; pp. 1294 - 1301
Main Authors Zeng, Zhiguo, Kang, Rui, Chen, Yunxia
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.10.2016
Elsevier
Subjects
Dependency
Engineering Sciences
Failure collaboration
Physics-of-failure
Reliability modeling
Reliability prediction
Reliability prediction
Reliability modeling
Dependency
Physics-of-failure
Failure collaboration
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Summary:Existing Physics-of-Failure-based （PoF-based） system reliability prediction methods are grounded on the independence assumption, which overlooks the dependency among the compo- nents. In this paper, a new type of dependency, referred to as failure collaboration, is introduced and considered in reliability predictions. A PoF-based model is developed to describe the failure behavior of systems subject to failure collaboration. Based on the developed model, the Bisection-based Reliability Analysis Method （BRAM） is exploited to calculate the system reliability. The developed methods are applied to predicting the reliability of a Hydraulic Servo Actuator （HSA）. The results demonstrate that the developed methods outperform the traditional PoF-based reliability prediction methods when applied to systems subject to failure collaboration.
Bibliography:Existing Physics-of-Failure-based （PoF-based） system reliability prediction methods are grounded on the independence assumption, which overlooks the dependency among the compo- nents. In this paper, a new type of dependency, referred to as failure collaboration, is introduced and considered in reliability predictions. A PoF-based model is developed to describe the failure behavior of systems subject to failure collaboration. Based on the developed model, the Bisection-based Reliability Analysis Method （BRAM） is exploited to calculate the system reliability. The developed methods are applied to predicting the reliability of a Hydraulic Servo Actuator （HSA）. The results demonstrate that the developed methods outperform the traditional PoF-based reliability prediction methods when applied to systems subject to failure collaboration.
Dependency;Failure collaboration Physics-of-failure;Reliability modeling;Reliability prediction
11-1732/V
ISSN:1000-9361
DOI:10.1016/j.cja.2016.08.014