Reliability Assessment of the Small Sample Aero-Engine Bearings

Abstract:

Aiming at the test of Aero-engine bearing is expensive, small sample without failure, and bearing life obeys Weibull distribution, small sample data is introduced in order to estimate the reliability of bearing with the method of Bayesian point estimation. The weighted least squares method is utilized to estimate the shape and scale parameters of Weibull distribution in the case of no failure. The bearing cumulative failure function, failure rate and average life can be gotten. Finally, the bearing experiment data is used to verify the validity of the small sample evaluation. It is proved that the method has an important value for the replacement and maintenance of Aero-engine bearing.

• Periodical: Advanced Materials Research (Volumes 986-987)
• Pages: 858-861
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.986-987.858
• Online since: July 2014
• Authors: Feng Ding*, Jiu Cheng Yin, Jun Qiang Dang
• Keywords: Aero-Engine Bearing, Reliability, Small Sample, Weibull Distribution

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