Crack growth retardation following the application of an overload cycle using a strip-yield model

被引：14

作者：

Codrington, John ^{[1
]}

Kotousov, Andrei ^{[1
]}

机构：

[1] Univ Adelaide, Sch Mech Engn, Adelaide, SA 5005, Australia

来源：

ENGINEERING FRACTURE MECHANICS | 2009年 / 76卷 / 11期

关键词：

Crack growth retardation; Distributed dislocation technique; Fatigue crack closure; Overload effect; Plasticity-induced crack closure; DISTRIBUTED DISLOCATION TECHNIQUE; FINITE-ELEMENT; SINGLE OVERLOADS; FATIGUE; CLOSURE; PROPAGATION; MECHANISMS; ROUGHNESS; ALUMINUM; STEEL;

D O I：

10.1016/j.engfracmech.2009.02.021

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Experiments have shown that the application of an overload cycle can act to retard crack growth and even potentially lead to crack arrest. This paper describes a new method for investigating fatigue crack growth after the application of an overload cycle under plane stress conditions. The developed method is based on the concept of plasticity-induced crack closure and utilises the distributed dislocation technique and a modified strip-yield model. The present results are compared to previous experimental data for several materials. A good agreement is found, with the predictions showing the same trends in the various stages of post-overload crack growth. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1667 / 1682

页数：16

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