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Volume 35 Issue 12
Dec.  2009
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Journal of Beijing University of Aeronautics and Astronautics  > 2009  >  35(12): 1464-1467.
Hong Jie, Wang Dawei, Ma Yanhonget al. Time effectiveness analysis of fault samples for aero-engine reliability assessment[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(12): 1464-1467. (in Chinese)
Citation: Hong Jie, Wang Dawei, Ma Yanhonget al. Time effectiveness analysis of fault samples for aero-engine reliability assessment[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(12): 1464-1467. (in Chinese)
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Time effectiveness analysis of fault samples for aero-engine reliability assessment

  • School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 28 Nov 2008
  • Publish Date: 31 Dec 2009
    Abstract
  • It is hysteretic to use reliability model which is set up based on failure data to reflect the changes of system reliability condition. With the enhancement of reliability level, the early failure samples should be processed time effectively in aero-engine reliability assessment. An attenuation factor α was proposed to express the attenuation grade of failure intensity. The attenuation function that describes the attenuation process was captured by improving Gompertz reliability growth model. All useful information was utilized by using Bayes data fusion methods for time effectiveness of samples. A new acquisition turbo-fan engine was statistically analyzed by this model, and the time effectiveness of fault samples for typical failure was studied. The result indicates that this model could provide more scientific evaluation of aero-engine-s reliability.

     

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