Probabilistic model of the pre-corrosion fatigue life of epoxy-coated aluminum alloys based on the single point-group model of the maximum likelihood method

被引：8
作者：
Zhang, Tianyu [1 ]
Zhang, Teng [1 ]
He, Yuting [1 ]
Wang, Yuchen [1 ]
Wang, Changkai [1 ]
机构：
[1] Air Force Engn Univ, Xian, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 171卷
基金：
中国国家自然科学基金;
关键词：
Fatigue life; Probabilistic model; Single point-group model; Maximum likelihood method; Epoxy coating; ATMOSPHERIC CORROSION; PREDICTION; COASTAL; BEHAVIOR; 2024-T4; GROWTH;
D O I：
10.1016/j.ijfatigue.2023.107580
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Based on the single point-group model of the maximum likelihood method, a probabilistic model consisting of the fatigue life and C(Corrosion)-S-N surface curves, and which considers the effect of pre-corrosion, is proposed and verified. It is found that in the early stage of pre-corrosion, the effect of the stress level on the life attenuation ratio is more significant than the corrosion time. Finally, equivalence between artificially accelerated corrosion and atmospheric exposure based on the identical degree of fatigue life decay is obtained based on a prior atmospheric exposure test. The time of complete failure of the epoxy coating is given.
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页数：13
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