中文摘要：

模拟飞机结构经历的“地面腐蚀＋空中疲劳”过程，分析腐蚀影响系数法（C（t）曲线）的物理意义，提出将其当量成疲劳寿命的衰减；在考虑腐蚀环境与疲劳载荷耦合作用的基础上，提出腐蚀．疲劳交替作用下金属结构的剩余寿命预测模型．以2A12．T4铝合金标准实验件为研究对象，以预腐蚀疲劳和腐蚀．疲劳交替实验结果为依据，验证了模型的计算结果．

英文摘要：

The process ＂corrosion on the ground ＋ fatigue in the air＂ for aircraft structures was simulated and physical nature of method of so called corrosion-affected cofficient was analyzed. Therewith, the equivalent fatigue damage caused by corrosion was calculated. Afterwards, a new model for predicting aircraft metal structure residual life is proposed in consideration of the coupling-effect between corrosion and fatigue process. Finally, the performance of 2A12-T4 aluminum alloy specimens is studied by means of pre-corrosion and then altemative corrosion-fatigue tests. The results show that the model life is in good agreement with the actual altemative test.