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Volume 39 Issue 1
Jan.  2013
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Journal of Beijing University of Aeronautics and Astronautics  > 2013  >  (1): 27-30,41.
Zhang Jianyu, Yuan Jun, Shi Xinhonget al. Effect of pre-corrosion on the MSD occurrence probability[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, (1): 27-30,41. (in Chinese)
Citation: Zhang Jianyu, Yuan Jun, Shi Xinhonget al. Effect of pre-corrosion on the MSD occurrence probability[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, (1): 27-30,41. (in Chinese)
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Effect of pre-corrosion on the MSD occurrence probability

  • School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 08 Nov 2011
  • Publish Date: 31 Jan 2013
    Abstract
  • Aimed at the multiple side damage(MSD) existed in the typical aircraft structural components,the occurrence probability of multiple side damage was investigated. The condition of pre-corrosion was dipping in 3.5% NaCl solution for 240 hours. The influence coefficient C was obtained based on the pre-corrosion and the normal fatigue experiment of 7B04-T74 aluminum alloy single detail specimens. The relationship could be estalished between the MSD occurrence probability under the specified pre-corrosion and the MSD occurrence probability under the normal fatigue condition. The formula of MSD occurrence probability after per-corrosion was gained. The calculation and experimentation results were compared. Results show that the new formula can compute the MSD occurrence probability after pre-corrosion commendably.

     

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