A study of adhesively bonded joints subjected to constant and variable amplitude fatigue

被引：56
|
作者：
Erpolat, S
Ashcroft, IA [1 ]
Crocombe, AD
Abdel-Wahab, MM
机构：
[1] Univ Loughborough, Wolfson Sch Mech & Mfg Engn, Loughborough LE11 3TU, Leics, England
[2] Univ Surrey, Sch Engn, Guildford GU2 7XH, Surrey, England
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2004年 / 26卷 / 11期
关键词：
composites; joints; fatigue life prediction; variable amplitude loading;
D O I：
10.1016/j.ijfatigue.2004.03.011
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Double lap joints were tested under constant and variable amplitude loading. Palmgren-Miner's rules were applied to predict the constant amplitude fatigue life using variable amplitude loading. These significantly overestimated the fatigue life, indicating a high crack growth acceleration due to the load transitions in the variable amplitude fatigue spectrum. Crack growth acceleration was mainly attributed to mean stress variations in the spectrum but overloads were shown to be important in crack initiation. A model incorporating a 'cycle mix' factor has been proposed as an improved method of predicting the fatigue life of bonded joints subjected to variable amplitude fatigue and this model has been shown to result in significantly improved fatigue lifetime predictions. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1189 / 1196
页数：8
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