A method evaluating fatigue lives for civil aircraft structures under corrosive environment was presented. The service process of civil aircraft structures was simplified to two independent parts: pre-corrosion on the ground and in the air environment, corrosion fatigue in the air. All these effect factors were synthesized then the curve of corrosion influence factor(��C��) versus time(��T��) could be built up. Then evaluation of civil aircraft structures fatigue lives under corrosive environment could perform effectively by correcting fatigue life under common environment.
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