| 预腐蚀对多部位损伤发生概率的影响 |
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| 引用本文： | 张建宇,袁军,时新红.预腐蚀对多部位损伤发生概率的影响[J].北京航空航天大学学报,2013,0(1):27-30,41. |
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| 作者姓名： | 张建宇 袁军 时新红 |
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| 作者单位： | 北京航空航天大学航空科学与工程学院,北京,100191;北京航空航天大学航空科学与工程学院,北京,100191;北京航空航天大学航空科学与工程学院,北京,100191 |
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| 摘 要： | 针对飞机结构中存在的多部位损伤(MSD,Multiple Side Damage)问题,对预腐蚀后多细节结构MSD发生概率进行分析研究.预腐蚀条件选为3.5%NaCl溶液浸泡240 h.通过7B04-T74铝合金单细节预腐蚀-疲劳及常规环境疲劳试验,得到了预腐蚀影响系数C.确定了预腐蚀后的MSD发生概率与常规疲劳试验MSD发生概率之间的关系.建立了预腐蚀后的MSD发生概率公式.通过与试验结果对比表明:新的公式可以很好地反映试验结果.
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| 关 键 词： | 多部位损伤 预腐蚀 发生概率 影响系数 |
| 收稿时间： | 2011-11-08 |
Effect of pre-corrosion on the MSD occurrence probability |
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| Zhang Jianyu,Yuan Jun,Shi Xinhong.Effect of pre-corrosion on the MSD occurrence probability[J].Journal of Beijing University of Aeronautics and Astronautics,2013,0(1):27-30,41. |
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| Authors: | Zhang Jianyu Yuan Jun Shi Xinhong |
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| Institution: | School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| 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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| Keywords: | multiple side damage(MSD) pre-corrosion occurrence probability influence coefficient |
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