Fatigue crack growth behaviour of A5083 series aluminium alloys and their welded joints

被引：0
|
作者：
Koji Gotoh
Koji Murakami
Yasuo Noda
机构：
[1] Kyushu University,Department of Marine Systems Engineering, Faculty of Engineering
[2] Kyushu University,Department of Civil and Structural Engineering, Graduate School of Engineering
来源：
Journal of Marine Science and Technology | 2011年 / 16卷
关键词：
Fatigue; Aluminium alloy A5083; RPG stress; Numerical simulation of fatigue crack growth;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We investigated the difference in fatigue behaviour between the aluminium alloys A5083-O and A5083-H321, which are used as structural components in ships and high speed craft. We obtained S–N curves for the base materials and the welded joints made of A5083-O. The relationships between the fatigue crack propagation rates and the stress intensity factor ranges ΔK, ΔKeff and ΔKRPG (Toyosada et al. in Int J Fatigue 26(9):983–992, 2004) were determined. Additionally, the evolution of fatigue crack growth for the base materials and the welded joints made of A5083-O was measured. We also carried out numerical simulations of fatigue crack growth for both base metals and their welded joints made of A5083-O. The difference in fatigue crack growth behaviour for each alloy and the validity of the numerical simulations of fatigue crack growth based on the RPG stress criterion (Toyosada et al. 2004) in the base materials and their welded joints was investigated.
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