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Volume 26 Issue 5
May  2000
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Journal of Beijing University of Aeronautics and Astronautics  > 2000  >  26(5): 556-560.
ZHANG Jian-yu, LIU Ai-min, FEI Bin-junet al. Stochastic Crack Growth Approach under Corrosive Environment for Durability Analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(5): 556-560. (in Chinese)
Citation: ZHANG Jian-yu, LIU Ai-min, FEI Bin-junet al. Stochastic Crack Growth Approach under Corrosive Environment for Durability Analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2000, 26(5): 556-560. (in Chinese)
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Stochastic Crack Growth Approach under Corrosive Environment for Durability Analysis

  • Beijing University of Aeronautics and Astronautics,Dept. of Flight Vehicle Design and Applied Mechanics

  • Received Date: 09 Apr 1999
  • Publish Date: 31 May 2000
    Abstract
  • In order to analyze the aircraft structural reliability under corrosive environment, stochastic crack growth approach (Cor-SCGA) for durability analysis is established. Assuming the influence of the pre-corrosion in parkand the influence of corrosion in flight are independent, the fatigue quality of structure under corrosive environment has a Weibull distribution. Using a log-normal stochastic variable model to describe crack propagation, an equation for predicting the probability of crack exceedance is established. Compared with the probability fracture mechanics approach under corrosive environment (Cor-PFMA) and probability fracture mechanics approach under normal environment (Nor-PFMA), Cor-SCGA is more efficient. This approach will be better used for durability-based design.

     

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