Volume 33 Issue 02
Feb.  2007
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He Xiaofan, Liu Wenting, Yang Hongyuanet al. Acceleration corrosion factor analysis for fatigue critical components based on the Weibull distribution[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(02): 154-158. (in Chinese)
Citation: He Xiaofan, Liu Wenting, Yang Hongyuanet al. Acceleration corrosion factor analysis for fatigue critical components based on the Weibull distribution[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(02): 154-158. (in Chinese)

Acceleration corrosion factor analysis for fatigue critical components based on the Weibull distribution

  • Received Date: 02 Mar 2006
  • Publish Date: 28 Feb 2007
  • Accounting for the pre-corrosion influence on the fatigue life, the st atistical analysis of acceleration corrosion factor for accelerated aging test to service or natural exposure environment on fatigue critical components was performed. Ass uming the pre-corrosion fatigue life follows the two-parameter Weibull distrib ut ion, and the relationship between the characteristic life and the pre-corrosion time can be expressed as an exponential model, the equations for acceleration corrosion fa ctor were established. The acceleration corrosion factor was proved to be a constant regardl ess of reliability degree and pre-corrosion time. The approximate distribution o f the acceleration corrosion factor estimate was gained, so the confidence intervals of the acceleration corrosion factor for LY12CZ aluminum alloys specimen were obtained.

     

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