The Effect of Periodic Segmentation Cracks on the Interfacial Debonding: Study on Interfacial Stresses

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	The Effect of Periodic Segmentation Cracks on the Interfacial Debonding: Study on Interfacial Stresses
	Wu CW(吴臣武); Chen GN(陈光南); Zhang K(张坤); Luo GX(罗耕星); Liang NG(梁乃刚)
刊名	Surface & Coatings Technology
	2006
通讯作者邮箱	wcw_on@yahoo.com.cn
卷号	201 期号:1-2 页码:287-291
ISSN号	0257-8972
通讯作者	Wu, C (reprint author), Chinese Acad Sci, Inst Mech, Surface Modificat Lab, Beijing 100080, Peoples R China.
中文摘要	Hard coatings on relatively soft substrate always face the danger of debonding along the interface. Interfacial stresses are considered to be the initial driving force for the interfacial debonding of the relatively strong bonded coatings. Interfacial stresses due to the mismatch of strain between the coating and substrate are simulated with FEM firstly. The distribution of the interfacial stresses is achieved, which confirms an excessive stresses concentration near the interface end. Subsequently, the redistribution of interfacial stresses is calculated for a coating with periodic segmentation cracks. Results indicate that the distribution of interfacial stresses is altered greatly with the periodic segmentation cracks. To reveal the effect of the spacing of the periodic segmentation cracks on the distribution of interfacial stresses, different crack density is modeled within the coating. It is found that that the peak values of the interfacial stresses decrease with the increase of crack density, i.e. with reduction of spacing of segmentation cracks.
学科主题	力学
类目[WOS]	Materials Science, Coatings & Films ; Physics, Applied
研究领域[WOS]	Materials Science ; Physics
关键词[WOS]	THERMAL BARRIER COATINGS ; MECHANISMS ; FRACTURE
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000240616600039
公开日期	2007-06-15 ; 2007-12-05 ; 2009-06-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/16487]
专题	力学研究所_力学所知识产出(1956-2008)
推荐引用方式 GB/T 7714	Wu CW,Chen GN,Zhang K,et al. The Effect of Periodic Segmentation Cracks on the Interfacial Debonding: Study on Interfacial Stresses[J]. Surface & Coatings Technology,2006,201(1-2):287-291.
APA	吴臣武,陈光南,张坤,罗耕星,&梁乃刚.(2006).The Effect of Periodic Segmentation Cracks on the Interfacial Debonding: Study on Interfacial Stresses.Surface & Coatings Technology,201(1-2),287-291.
MLA	吴臣武,et al."The Effect of Periodic Segmentation Cracks on the Interfacial Debonding: Study on Interfacial Stresses".Surface & Coatings Technology 201.1-2(2006):287-291.