A modified cyclic crack propagation description

被引：7

作者：

Dhondt, Guido ^{[1
]}

Rupp, Michael ^{[1
]}

Hackenberg, Hans-Peter ^{[1
]}

机构：

[1] MTU Aero Engines AG, D-80995 Munich, Germany

来源：

ENGINEERING FRACTURE MECHANICS | 2015年 / 146卷

关键词：

Crack propagation law; R-dependence; Walker; HCF-cycles; THRESHOLD; GROWTH;

D O I：

10.1016/j.engfracmech.2015.07.020

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A new form of the crack propagation law is presented for cyclic crack propagation calculations. It is characterized by a multiplicative juxtaposition of the Paris range, the threshold and critical limit and the R-dependence. The latter is covered by a modified Walker approach, in which the influence of small cycles at high R-ratios is appropriately adjusted. The concrete form of the R-dependence was validated by application to a wide range of materials. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：21 / 30

页数：10

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