A unified method of design for fatigue crack growth resistance in structural materials

被引：12

作者：

Gavras, Anastasios G. ^{[1
]}

Lados, Diana A. ^{[1
]}

Donald, J. Keith ^{[2
]}

机构：

[1] Worcester Polytech Inst, Integrat Mat Design Ctr, Worcester, MA 01609 USA

[2] Fracture Technol Associates, Bethlehem, PA 18020 USA

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2013年 / 47卷

关键词：

Long and physically small fatigue crack growth; Closure; K-max and Delta K-th parameters; Residual stress; Stress ratio; MIXED-MODE; STRESS; THRESHOLDS; PARAMETERS; CLOSURE;

D O I：

10.1016/j.ijfatigue.2012.07.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

It is well established that there are two fatigue crack tip driving forces - the cyclic, Delta K, and the static, K-max In this study, the effects of each crack tip driving force on crack growth were evaluated for various structural materials. A unified method of design that allows for predicting the response of long and physically small fatigue cracks at positive stress ratios is introduced. Good agreement between predicted and experimental long and physically small fatigue crack growth data was obtained. The importance of this method in material and component design is discussed as part of a contemporary design philosophy. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：58 / 70

页数：13

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