In Situ Measurement of the Toughness of the Interface Between a Thermal Barrier Coating and a Ni Alloy

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	In Situ Measurement of the Toughness of the Interface Between a Thermal Barrier Coating and a Ni Alloy
	Eberl C; Wang X; Gianola DS; Nguyen TD; He MY; Evans AG; Hemker KJ
刊名	Journal of The American Ceramic Society
	2011
通讯作者邮箱	chris.eberl@kit.edu
卷号	94 页码:S120-S127
关键词	Bimaterial Interfaces Mechanical-Properties Systems Delamination Adhesion Behavior Cracks
ISSN号	0002-7820
通讯作者	Eberl, C (reprint author), Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA
产权排序	[Eberl, Christoph; Wang, Xi; Gianola, Daniel S; Nguyen, Thao D; Hemker, Kevin J] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA; [Eberl, Christoph] Karlsruhe Inst Technol, Inst Appl Mat, D-76131 Karlsruhe, Germany; [Wang, Xi] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; [Gianola, Daniel S] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA; [He, Ming Y; Evans, Anthony G] UCSB, Dept Mat, Santa Barbara, CA 93106 USA
合作状况	国际
中文摘要	A flexural test for the in situ measurement of the delamination toughness of the interface between a thermally grown oxide and a bond coat in the presence of a thermal barrier coating (TBC) has been implemented. To accomplish the testing, a section of the substrate was removed by microelectro-discharge machining and a precrack introduced through the TBC by center point loading. This was followed by application of an asymmetric single-point load to extend a delamination along the interface. A displacement and strain mapping method was used to locate the delamination and to ascertain its extension. To relate the energy release rate and mode mixity to the crack extension and the loads, a finite-element method was implemented. The ensuing fracture resistance was found to vary along the interface with values in the range of 25-95 J/m(2).
学科主题	Materials Science
分类号	一类
类目[WOS]	Materials Science, Ceramics
研究领域[WOS]	Materials Science
关键词[WOS]	BIMATERIAL INTERFACES ; MECHANICAL-PROPERTIES ; SYSTEMS ; DELAMINATION ; ADHESION ; BEHAVIOR ; CRACKS
收录类别	SCI ; EI
资助信息	This work was supported by AFOSR under the MEANS-2 Program (Grant No. FA9550-05-1-0173) and by ONR (Grant No. N00014-08-1-0454).The authors would like to thank J. Hutchinson for creative and enlightening discussions that allowed this technique to come to fruition. We also thank M. Maloney and D. Litton of Pratt and Whitney (USA) for providing the specimens, S. Faulhaber for preparing the disk specimens, J. Mraz (Smaltec) for fabricating the microbeam specimens, and W. Sharpe, Jr. and J. Sharon for technical support. C. E. would like to acknowledge financial support from the German Science Foundation (SFB499/3-2007 N01).
原文出处	http://dx.doi.org/10.1111/j.1551-2916.2011.04588.x
语种	英语
WOS记录号	WOS:000292209200013
公开日期	2012-04-01
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/44926]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Eberl C,Wang X,Gianola DS,et al. In Situ Measurement of the Toughness of the Interface Between a Thermal Barrier Coating and a Ni Alloy[J]. Journal of The American Ceramic Society,2011,94:S120-S127.
APA	Eberl C.,Wang X.,Gianola DS.,Nguyen TD.,He MY.,...&Hemker KJ.(2011).In Situ Measurement of the Toughness of the Interface Between a Thermal Barrier Coating and a Ni Alloy.Journal of The American Ceramic Society,94,S120-S127.
MLA	Eberl C,et al."In Situ Measurement of the Toughness of the Interface Between a Thermal Barrier Coating and a Ni Alloy".Journal of The American Ceramic Society 94(2011):S120-S127.