A physically based universal functional to characterize the mechanism of fatigue crack growth in materials

被引：16
作者：
Chandran, K. S. Ravi [1 ]
机构：
[1] Univ Utah, Dept Met Engn, Salt Lake City, UT 84112 USA
来源：
SCRIPTA MATERIALIA | 2015年 / 107卷
关键词：
Fatigue; Crack growth; Aluminum; Steel; Titanium; Magnesium; PMMA; PROPAGATION;
D O I：
10.1016/j.scriptamat.2015.05.035
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A unique relationship between the normalized remaining section size and the normalized remaining fatigue life has been discovered to exist during fatigue crack growth in a wide spectrum of materials. A crack growth functional that relates the two variables, and which is in excellent agreement with experimental data, is proposed. This functional suggests that all fatigue cracks propagate uniquely to sever the material cross-section and is promising as a new physical basis for characterizing fatigue crack growth mechanisms in materials. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：115 / 118
页数：4
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