Journal of Zhejiang University

Journal of Zhejiang University SCIENCE A 2014 Vol.15 No.6 P.447-453

A nonlinear cumulative evolution model for corrosion fatigue damage*

Author(s): Zhong-ying Han¹,Xiao-guang Huang²,Yu-guang Cao²,Jin-quan Xu³
Affiliation(s): 1. 1. College of Petroleum Engineering, China University of Petroleum, Qingdao 266580, China more
Corresponding email(s): huangupc@126.com
Key Words: Corrosion fatigue, Stress corrosion, Nonlinear accumulation, Damage evolution

Share this article to： More <<< Previous Article \|Next Article >>>

Zhong-ying Han, Xiao-guang Huang, Yu-guang Cao, Jin-quan Xu. A nonlinear cumulative evolution model for corrosion fatigue damage[J]. Journal of Zhejiang University Science A, 2014, 15(6): 447-453.

@article{title="A nonlinear cumulative evolution model for corrosion fatigue damage",
author="Zhong-ying Han, Xiao-guang Huang, Yu-guang Cao, Jin-quan Xu",
journal="Journal of Zhejiang University Science A",
volume="15",
number="6",
pages="447-453",
year="2014",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1300362"
}

%0 Journal Article
%T A nonlinear cumulative evolution model for corrosion fatigue damage
%A Zhong-ying Han
%A Xiao-guang Huang
%A Yu-guang Cao
%A Jin-quan Xu
%J Journal of Zhejiang University SCIENCE A
%V 15
%N 6
%P 447-453
%@ 1673-565X
%D 2014
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1300362

TY - JOUR
T1 - A nonlinear cumulative evolution model for corrosion fatigue damage
A1 - Zhong-ying Han
A1 - Xiao-guang Huang
A1 - Yu-guang Cao
A1 - Jin-quan Xu
J0 - Journal of Zhejiang University Science A
VL - 15
IS - 6
SP - 447
EP - 453
%@ 1673-565X
Y1 - 2014
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1300362

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: A nonlinear cumulative evolution model for corrosion fatigue damage was proposed. corrosion fatigue damage was considered as a nonlinear cumulative result of stress corrosion damage and fatigue damage. The influences of stress corrosion damage and fatigue damage on corrosion fatigue damage and damage evolution life were studied from a phenomenological point of view. The relevant damage parameters were determined by the experimental results of the LY12CZ aluminum alloy, and the corrosion fatigue life evaluation model based on damage evolution law was established. The corrosion fatigue life predicted by evaluation model agrees well with the experimental result. The damage evolution model in this study can provide a new method for theoretical research and life prediction of corrosion fatigue.

一种腐蚀疲劳损伤的非线性累加演化模型

研究目的：提出一种新的腐蚀疲劳损伤演化模型，建立基于损伤演化的腐蚀疲劳寿命预测模型。
创新要点：将应力腐蚀损伤与疲劳损伤非线性耦合，建立腐蚀疲劳损伤演化律，依托实验确定腐蚀疲劳损伤演化参数，形成基于损伤演化律的腐蚀疲劳寿命预测模型。
研究方法：采用理论研究与实验验证相结合的研究方法。选取特定材料设计应力腐蚀实验，回归应力腐蚀门槛值应力和损伤参数（图2）；查阅疲劳实验数据建立变幅疲劳损伤模型，将应力腐蚀损伤与变幅疲劳损伤非线性累加形成腐蚀疲劳损伤非线性演化模型。根据腐蚀疲劳实验结果，验证腐蚀疲劳损伤演化模型并确定非线性损伤累加参数（图5和6），形成基于损伤演化律的腐蚀疲劳寿命预测模型。
重要结论：从损伤力学角度，将材料的腐蚀疲劳损伤处理成应力腐蚀损伤与疲劳损伤的非线性累加，形成腐蚀疲劳损伤演化模型。结合LY12CZ铝合金的试验结果，验证了损伤演化模型的可行性。该方法可以为材料腐蚀疲劳的寿命评价研究提供新的思路。

关键词：腐蚀疲劳；应力腐蚀；非线性累加；损伤演化