Modelling fatigue crack growth in shot-peened components of Al 2024-T351

被引：44

作者：

De Los Rios, ER

Trull, M

Levers, A

机构：

[1] Univ Sheffield, Fac Engn, SIRIUS, Sheffield S1 3JD, S Yorkshire, England

[2] British Aerosp PLC, Chester CH4 0DR, Cheshire, England

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2000年 / 23卷 / 08期

关键词：

fatigue life; crack propagation rate; shot peening; predicting fatigue life; crack arrest; fatigue damage map;

D O I：

10.1046/j.1460-2695.2000.00287.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Microstructural fracture mechanics' concepts are used to develop a model to incorporate shot-peening effects into crack propagation laws and fatigue life predictions. Shot peening produces a residual stress which resists opening of the crack and also produces a work-hardened layer within which the flow stress is raised. The model takes account of these effects to give an accurate prediction of the increase in fatigue life. The model was also used to derive the conditions for crack arrest, and the results are presented in the form of a fatigue damage map (FDM). The FDM can be used for the determination of safe loads in durability and maintainability-analyses.

引用

页码：709 / 716

页数：8

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