Volume 38 Issue 1
Jan.  2012
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Pan Bo, Jiang Tongmin. Fuzzy comprehensive evaluation of corrosion damage of aircraft structures based on fault tree[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(1): 39-42. (in Chinese)
Citation: Pan Bo, Jiang Tongmin. Fuzzy comprehensive evaluation of corrosion damage of aircraft structures based on fault tree[J]. Journal of Beijing University of Aeronautics and Astronautics, 2012, 38(1): 39-42. (in Chinese)

Fuzzy comprehensive evaluation of corrosion damage of aircraft structures based on fault tree

  • Received Date: 12 Aug 2010
  • Publish Date: 30 Jan 2012
  • To resolve the complexity and fuzziness of influence on the corrosion damage of aircraft structures, a method based on fault tree analysis and fuzzy theory was proposed to evaluate the corrosion damage of aircraft structures in complicated environments. Fault tree of corrosion damage on aircraft structures was set up by analysis of corrosion process and mechanism, and then the evaluation set of corrosion damage was obtained. Relative importance of evaluation factors was analyzed, and weight set was got by the proportion calculation of relative importance of evaluation factors. After the evaluation grade of corrosion damage has been set up, the fuzzy mapping between evaluation set and evaluation grade was set up. The corrosion damage of service environments on aircraft structures was evaluated quantitatively by fuzzy transformation of fuzzy relation. Finally, corrosion damage evaluations of aircraft aluminum alloy structures and stainless steel structures in coastal environments were illustrated, which demonstrate that the proposed method is valid and can provide evidence for the aircraft structural design and maintenance.

     

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