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Crack propagation in laminar ceramics

SYSNO ASEP	0337699
Document Type	C - Proceedings Paper (int. conf.)
R&D Document Type	O - Ostatní
Title	Crack propagation in laminar ceramics
Author(s)	Náhlík, Luboš (UFM-A)_{RID, ORCID} Šestáková, Lucie (UFM-A) Hutař, Pavel (UFM-A)_{RID, ORCID}
Number of authors	3
Source Title	Proceedings of the international conference on Crack Paths. - Padua : University Padua, 2009 / Atzori B. ; Carpinteri A. ; Pook L. P.
Pages	s. 1041-1048
Number of pages	8 s.
Publication form	CD-ROM - CD-ROM
Action	Crack Paths 2009
Event date	23.09.2009-25.09.2009
VEvent location	Vicenza
Country	IT - Italy
Event type	WRD
Language	eng - English
Country	IT - Italy
Keywords	laminar ceramics ; crack bifurcation ; material interface
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	KJB200410803 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	GA106/09/0279 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
Annotation	The contribution presented deals with crack propagation in ceramic laminates. The crack behaviour in ceramic laminate body under external loading is investigated. Strong residual stresses due to different coefficients of thermal expansion of individual material layers are taking into account in finite element calculations.The influence of thickness of laminate layers on crack propagation direction is estimated. The stepwise crack propagation path of the crack propagating through Al2O3-ZrO2 ceramic laminate is numerically estimated. The comparison of estimated crack path with experimental data is done and mutual good agreement is found. The resistance to crack propagation through laminate body depends on the level of crack deflection on material interfaces, thus the estimation of the crack propagation direction or generally of the crack path is necessary for determination of so-called apparent fracture toughness of the laminate.
Workplace	Institute of Physics of Materials
Contact	Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485
Year of Publishing	2010

Number of the records: 1