Acoustic emission study of fatigue crack closure of physical short and long cracks for aluminum alloy LY12CZ

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	Acoustic emission study of fatigue crack closure of physical short and long cracks for aluminum alloy LY12CZ
	H. Chang ; E. H. Han ; J. Q. Wang ; W. Ke
刊名	International Journal of Fatigue
	2009
卷号	31 期号:3 页码:403-407
关键词	Crack Closure Physical short crack Acoustic emission Aluminum alloy LY12CZ finite-element-analysis threshold
ISSN号	0142-1123
中文摘要	Crack closure of physical short and long cracks of LY12CZ aluminum alloy during fatigue process was investigated using acoustic emission (AE) technique. Results showed that the effective fatigue crack growth curve (da/dN vs. Delta K(eff)) of physical short and long cracks obtained by the AE technique was consistent with the effective fatigue crack growth Curve at high stress ratio (R = 0.8), which implied that the AE technique Could measure the crack closure level, especially for physical short crack. The growth rate of physical short crack was Much higher than that of long crack at the same Delta K, and the lower crack Closure level of short crack was the main reason. (C) 2008 Elsevier Ltd. All rights reserved.
原文出处	://WOS:000262077800001
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31816]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	H. Chang,E. H. Han,J. Q. Wang,et al. Acoustic emission study of fatigue crack closure of physical short and long cracks for aluminum alloy LY12CZ[J]. International Journal of Fatigue,2009,31(3):403-407.
APA	H. Chang,E. H. Han,J. Q. Wang,&W. Ke.(2009).Acoustic emission study of fatigue crack closure of physical short and long cracks for aluminum alloy LY12CZ.International Journal of Fatigue,31(3),403-407.
MLA	H. Chang,et al."Acoustic emission study of fatigue crack closure of physical short and long cracks for aluminum alloy LY12CZ".International Journal of Fatigue 31.3(2009):403-407.