A continuum damage mechanics model for pit-to-crack transition in AA2024-T3

被引：51

作者：

Amiri, M. ^{[1
]}

Arcari, A. ^{[1
]}

Airoldi, L. ^{[1
]}

Naderi, M. ^{[1
]}

Iyyer, N. ^{[1
]}

机构：

[1] Tech Data Anal Inc, Falls Church, VA 22042 USA

来源：

CORROSION SCIENCE | 2015年 / 98卷

关键词：

Aluminum; Pitting corrosion; Corrosion fatigue; FATIGUE LIFE PREDICTION; CORROSION-FATIGUE; PITTING CORROSION; PLASTIC-DEFORMATION; LOCALIZED CORROSION; ANODIC-DISSOLUTION; PIPELINE STEEL; ALUMINUM-ALLOY; STRESS; GROWTH;

D O I：

10.1016/j.corsci.2015.06.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A Continuum Damage Mechanics model for corrosion fatigue damage is presented to study the pit-to-crack initiation life in AA2024-T3. This study is based on the experimental observation of reduced fatigue life in presence of corrosive environment. The model is based on the assumption that stress field has effect on the corrosion rate, and corrosion-induced damage enhances fatigue damage. Model results show significant reduction in fatigue crack initiation life. The model takes into account the effect of stress and frequency on the pit-to-crack transition life. Bayesian updating method is used to account for uncertainties in the parameters of the model. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：678 / 687

页数：10

共 69 条

[1] Fatigue damage accumulation: Aspects of environmental interaction [J].