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

Jia Huang; Hongsheng Yang; Wencheng Liu; Kai Zhang; Aijun Huang

doi:10.1016/j.ijfatigue.2021.106659

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

Jia Huang, Hongsheng Yang, Wencheng Liu, Kai Zhang, Aijun Huang

Materials Science & Engineering

Research output: Contribution to journal › Article › Research › peer-review

18 Citations (Scopus)

Abstract

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 γ-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.

Original language	English
Article number	106659
Number of pages	10
Journal	International Journal of Fatigue
Volume	156
DOIs	https://doi.org/10.1016/j.ijfatigue.2021.106659
Publication status	Published - Mar 2022

Keywords

CFRP laminates
Energy dissipation
Fatigue life
γ-p-S-N curve

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10.1016/j.ijfatigue.2021.106659

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

abstract = "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 γ-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.",

keywords = "CFRP laminates, Energy dissipation, Fatigue life, γ-p-S-N curve",

author = "Jia Huang and Hongsheng Yang and Wencheng Liu and Kai Zhang and Aijun Huang",

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T1 - Confidence level and reliability analysis of the fatigue life of CFRP laminates predicted based on fracture fatigue entropy

AU - Huang, Jia

AU - Yang, Hongsheng

AU - Liu, Wencheng

AU - Zhang, Kai

AU - Huang, Aijun

N1 - Funding Information: This paper is sponsored by Shanghai Sailing Program, China No. 20YF1432700 and National Natural Science Foundation of China [grant number 11802316 ]. Publisher Copyright: © 2021 Elsevier Ltd

PY - 2022/3

Y1 - 2022/3

N2 - 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 γ-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.

AB - 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 γ-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.

KW - CFRP laminates

KW - Energy dissipation

KW - Fatigue life

KW - γ-p-S-N curve

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DO - 10.1016/j.ijfatigue.2021.106659

M3 - Article

AN - SCOPUS:85120462808

SN - 0142-1123

VL - 156

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 106659

ER -

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

Abstract

Keywords

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