Confidence level and reliability analysis of the fatigue life of CFRP laminates predicted based on fracture fatigue entropy

被引：17

作者：

Huang, Jia ^{[1
]}

Yang, Hongsheng ^{[2
]}

Liu, Wencheng ^{[1
]}

Zhang, Kai ^{[3
,4
]}

Huang, Aijun ^{[4
]}

机构：

[1] Northwestern Polytech Univ, Sch Civil Aviat, Xian 710072, Peoples R China

[2] Ningbo Univ, MOE Key Lab Impact & Safety Engn, Ningbo 315211, Zhejiang, Peoples R China

[3] Univ Shanghai Sci & Technol, Sch Mat Sci & Engn, Shanghai 200093, Peoples R China

[4] Monash Univ, Monash Ctr Addit Mfg, Clayton, Vic 3800, Australia

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2022年 / 156卷

基金：

中国国家自然科学基金;

关键词：

gamma-p-S-N curve; CFRP laminates; Energy dissipation; Fatigue life; S-N CURVES; RAPID EVALUATION; THERMOGRAPHY; BEHAVIOR; FAILURE; LIMIT; MODEL;

D O I：

10.1016/j.ijfatigue.2021.106659

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This study provides a novel methodology to evaluate fatigue life with the consideration of both confidence level and reliability for CFRP laminates by combining fracture fatigue entropy (FFE) theory and knowledge of statistics. After carrying out distribution analysis and statistical hypothesis testing, it is found that the FFEs obey well to log-normal distribution and the average values and deviations of logarithmic FFEs under different stress levels exhibit no obvious difference. The gamma-p-S-N curves are predicted by single side allowance factor analysis and the prediction is found to be more conservative and have a larger scatter comparing to experimental results.

引用

页数：10

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