Abstract
The effect of atmospheric exposure corrosion on the fatigue properties of epoxy-coated aluminum alloys is studied using experimental atmospheric exposure data and some data presented in the literature. Based on a single-point model and the maximum likelihood method, a fatigue life probability model and C(corrosion)–S–N surface that considers the effect of corrosion are proposed and verified. This study finds that the epoxy coatings gradually lose their protective effect on the aluminum alloy substrates after four years of atmospheric exposure, and corrosion factors play a more pronounced role in the latter period of atmospheric exposure.
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