老龄飞行器结构腐蚀损伤评价参数研究

详细信息

Assessment Parameters of Corrosion Damage of Aged Aircraft Structure

摘要: 对遭受腐蚀损伤的铝合金结构性能进行了研究.将铝合金平板试验件在不同腐蚀条件下进行预腐蚀,对腐蚀后的试验件进行疲劳加载试验.对描述铝合金腐蚀损伤性能的两个关键参数,腐蚀损伤度和腐蚀损伤平均深度进行了显微镜观测和有限元模拟分析.结果表明,这两个参数可以作为铝合金结构腐蚀损伤性能的评价参数.
- 铝合金 /
- 腐蚀损伤 /
- 疲劳 /
- 评价参数
Abstract: The corrosion fatigue character of aluminum alloy structure was investigated.The Al alloy specimens precorroded in different corrosive solutions were tested under fatigue load.The two key parameters of describing corrosion damage,corrosion damage ratio and average depth of corrosion damage,were analyzed using experimental observation and finite element method.The preliminary results indicated that the two key parameters could be the appraisal parameters for corrosion damage of aluminum alloy structure.
- aluminum alloy /
- corrosion damage /
- fatigue /
- appraisal parameter

[1]	张有宏.腐蚀环境下飞机结构的广义全寿命模型[D].硕士学位论文,西北工业大学,2005.
[2]	张有宏.飞机结构的腐蚀损伤及其对寿命的影响[D].博士学位论文,西北工业大学,2007.
[3]	DuQuesnay D L,Underhill P R,Britt H J.Fatigue crack growth from corrosion damage in 7075-T6511 aluminium alloy under aircraft loading[J].International Journal of Fatigue,2003,25:371-377.
[4]	Bellinger N C,Komorowski J P,Benak T J.Residual life predictions of corroded fuselage lap joints[J].International Journal of Fatigue,2001,23(1):349-356.
[5]	Sankarank.K,Perez R,Jata K V.Effects of pitting corrosion on the fatigue behavior of aluminum alloy 7075-T6:modeling and experimental studies[J].Materials Science and Engineering A,2001,297(1):223-229.