Method for Fatigue Test of Aircraft StructuresConsidering Corrosion Influence
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摘要: 考虑腐蚀环境的影响,提出了一种关于飞机结构在一般环境下的疲劳试验方法.该方法综合考虑地面停放预腐蚀和空中腐蚀疲劳对结构疲劳寿命的影响,由腐蚀环境下结构设计疲劳寿命要求和年平均飞行小时数反推出一般环境下的疲劳寿命指标,从而确定结构疲劳试验目标寿命,为结构疲劳试验提供指导,具有重要的工程实用价值.Abstract: Considering the influence of corrosive environment, a valuable method for fatigue test of aircraft structures at room temperature and in the air is presented. The service process of an aircraft is simplified into pre-corrosion under the ground environment and corrosion fatigue during flight, and corrosion influence coefficient curves of aircraft structures are obtained. According to the damage equivalent principle, the fatigue life indexes of aircraft structures at room temperature and in the air are deduced based on the designed fatigue life index and average flight time per year under corrosive environment, so the testing object life can be determined.
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Key words:
- fatigue tests /
- corrosion /
- fatigue life
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