Number of the records: 1

Estimation of apparent fracture toughness of ceramic laminates

SYSNO ASEP	0337562
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Estimation of apparent fracture toughness of ceramic laminates
Author(s)	Náhlík, Luboš (UFM-A)_{RID, ORCID} Šestáková, Lucie (UFM-A) Hutař, Pavel (UFM-A)_{RID, ORCID}
Number of authors	3
Source Title	Computational Materials Science. - : Elsevier - ISSN 0927-0256 Roč. 46, č. 3 (2009), s. 614-620
Number of pages	7 s.
Language	eng - English
Country	NL - Netherlands
Keywords	bimaterial ; strain energy density factor ; ceramic composite ; apparent fracture toughness
Subject RIV	JL - Materials Fatigue, Friction Mechanics
R&D Projects	KJB200410803 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z20410507 - UFM-A (2005-2011)
UT WOS	000270346300013
DOI	doi:10.1016/j.commatsci.2009.04.005
Annotation	The paper presented deals with the fracture behavior of ceramic laminates. The residual stresses in individual layers of Al2O3/5vol.%t-ZrO2 (ATZ) and Al2O3/30vol.%m-ZrO2 (AMZ) are determined. Assumptions concerning linear elastic fracture mechanics and small scale yielding are considered. In this frame the procedure based on a generalization of Sih’s strain energy density factor to the case of a crack touching the interfaces between two dissimilar materials is used for determination of effective values of the stress intensity factor on material interfaces. An important increase of fracture toughness at the AMZ/ATZ interface was predicted in comparison to the fracture toughness of individual material components. Predicted values were compared with data available in the literature and mutual good agreement was found.
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