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Effects of subsystem mission time on reliability allocation

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  • Kyungmee O. Kim
  • Ming J. Zuo

Abstract

During the early stages of system development, various factors are considered when determining an allocation weight to apportion a system’s reliability requirement to each subsystem. Previous methods have included subsystem mission time as a factor in obtaining the allocation weight in order to allocate a higher failure rate to a subsystem with a shorter mission time than the system’s mission time. This article, first shows that the results obtained from previous methods are misleading, mainly because the allocated failure rate of the subsystem is expressed in the system’s mission time rather than the subsystem’s mission time. It is further shown that if a designer intends to allocate a lower failure rate to a subsystem that has to operate longer in the system, subsystem mission time must not be included as a factor when determining the allocation weight. If a designer wants to allocate the system failure rate equally to each subsystem regardless of a subsystem’s mission time, subsystem mission time must be included as a factor.

Suggested Citation

  • Kyungmee O. Kim & Ming J. Zuo, 2015. "Effects of subsystem mission time on reliability allocation," IISE Transactions, Taylor & Francis Journals, vol. 47(3), pages 285-293, March.
    • Handle: RePEc:taf:uiiexx:v:47:y:2015:i:3:p:285-293
    DOI: 10.1080/0740817X.2014.929363
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    Cited by:

    1. Kim, Kyungmee O. & Zuo, Ming J., 2018. "Optimal allocation of reliability improvement target based on the failure risk and improvement cost," Reliability Engineering and System Safety, Elsevier, vol. 180(C), pages 104-110.
    2. Kong, Xiangyong & Gao, Liqun & Ouyang, Haibin & Li, Steven, 2015. "Solving the redundancy allocation problem with multiple strategy choices using a new simplified particle swarm optimization," Reliability Engineering and System Safety, Elsevier, vol. 144(C), pages 147-158.

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