Investigation of fatigue crack propagation mechanisms of branching crack in 2324-T39 aluminum alloy thin plates under cyclic loading spectrum
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- 作者：Ting Zhang ; Rui Bao ; rbao@buaa.edu.cn" class="auth_mail" title="E-mail the corresponding author ; SongSong Lu ; Binjun Fei
- 关键词：Aluminum alloy ; Fatigue crack growth ; Crack branching ; Fracture characteristics ; Crack-tip stress field
- 刊名：International Journal of Fatigue
- 出版年：2016
- 出版时间：January 2016
- 年：2016
- 卷：82
- 期：part_P3
- 页码：602-615
- 全文大小：6911 K
文摘
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Significant crack branching was observed in VA and spectrum loading condition.
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There is a direct correlation between the crack path and fracture characteristics.
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The fracture mode and secondary cracks led to the appearance of branched cracks.
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High level σx, σz leads to mix-mode growth of the secondary cracks.