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Dynamic Importance Analysis of Components with Known Failure Contribution of Complex Systems

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  • Yangfan Li
  • Yingjie Zhang
  • Bochao Dai
  • Lin Zhang

Abstract

Importance analysis deals with the investigation of influence of individual system component on system operation. This paper mainly focuses on dynamic important analysis of components in a multistate system. Assuming that failure probabilities of system components are independent, a new time integral-based importance measure approach (TIIM) is proposed to measure the loss of system performance that is caused by each individual component. Reversely the importance of a component can be evaluated according to the magnitude of performance loss of the system caused by it. Moreover, the dynamic varying curve of importance of a component with time can be described by calculating criticality of the component at each state. On the other hand, in the proposed approach, the importance probability curve of a component is fitted by using the failure data from all components of system excluding that of the component itself so as to solve the problem of inaccurate fitting caused by small sample data. The approach has been verified by probability analysis of failure data of CNC machines.

Suggested Citation

  • Yangfan Li & Yingjie Zhang & Bochao Dai & Lin Zhang, 2018. "Dynamic Importance Analysis of Components with Known Failure Contribution of Complex Systems," Mathematical Problems in Engineering, Hindawi, vol. 2018, pages 1-10, April.
    • Handle: RePEc:hin:jnlmpe:8534065
    DOI: 10.1155/2018/8534065
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    Cited by:

    1. Yangfan Li & Yingjie Zhang & Ning An, 2024. "Accuracy reliability analysis of CNC machine tools considering manufacturing errors degrees," Journal of Risk and Reliability, , vol. 238(3), pages 643-653, June.

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