Critical status of crack growth in chevron-notch specimens of elastic-plastic materials

被引：4

作者：

Cheng, YS ^{[1
]}

Douglas, WH ^{[1
]}

机构：

[1] Univ Minnesota, MDRCBB, Minneapolis, MN 55455 USA

来源：

ENGINEERING FRACTURE MECHANICS | 1998年 / 61卷 / 3-4期

关键词：

fracture toughness of elastic-plastic materials; chevron-notch fracture test; critical status of crack growth; critical crack length;

D O I：

10.1016/S0013-7944(98)00062-9

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this study the emergence of the critical status of crack growth in the chevron-notch fracture test on elastic-plastic materials is discussed. The theoretical analysis and experimental results showed that the critical crack length for elastic-plastic materials is not a constant, and that it is not only a function of material properties, but also a function of the speed of crack growth. In particular, it is shown theoretically that for elastic-plastic materials the critical status of crack growth often occurs after the peak load. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：343 / 353

页数：11

共 10 条

[1]

*ASTM E, 130489 ASTM E

[2] THEORY FOR DETERMINING KK FROM SMALL, NON-LEFM SPECIMENS, SUPPORTED BY EXPERIMENTS ON ALUMINUM [J].