Analysis and Repair of Crack Growth Emanating from V-Notch under Stepped Variable Fatigue Loading

被引：16
|
作者：
Khan, Sohail M. A. [1 ]
Benyahia, F. [1 ]
Bouiadjra, B. Bachir [1 ,2 ]
Albedah, A. [1 ]
机构：
[1] King Saud Univ, Coll Engn, Dept Mech Engn, Riyadh, Saudi Arabia
[2] Univ Djillali Liabes Sidi Bel Abbes, Dept Mech Engn, LMPM, Cite Ben Mhidi 22000, Sidi Bel Abbes, Algeria
来源：
XVII INTERNATIONAL COLLOQUIUM ON MECHANICAL FATIGUE OF METALS (ICMFM17) | 2014年 / 74卷
关键词：
Cyclic Block Loading; Fatigue life; Composite Patch Repair; Al; 7075;
D O I：
10.1016/j.proeng.2014.06.240
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this paper, we studied the fatigue behavior of a crack emanating from v-notched aluminum (7075-T6) plate. To analyze the fatigue life of notched specimens we applied variable cyclic block-loading sequences, including increasing (L-H) and decreasing (H-L) blocks. We also analyzed the effect of the stress ratio(R) on the fatigue life of aluminum specimen subjected to stepped variable cyclic loading. The obtained results show that the effect of stress ratio on the fatigue life is significant. The patch repair efficiency is found to he limited for increasing (L-H) loading blocks but is significantly high for decreasing (ELL) cyclic loading blocks. (C) 2014 Published by Elsevier Ltd.
引用
收藏
页码：151 / 156
页数：6
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