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
	2009
发表期刊	International Journal of Fatigue
ISSN	0142-1123
卷号	31 期号:3 页码:403-407
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.
部门归属	[chang, h.; han, e. h.; wang, j. q.; ke, w.] chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china.;chang, h (reprint author), chinese acad sci, inst met res, environm corros ctr, shenyang 110016, peoples r china;hchangimr@126.com
关键词	Crack Closure Physical Short Crack Acoustic Emission Aluminum Alloy Ly12cz Finite-element-analysis Threshold
URL	查看原文
WOS记录号	WOS:000262077800001
引用统计	被引频次：56[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31816
专题	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.