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Prediction of crack propagation in layered ceramics with strong interfaces
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SYSNO ASEP 0354047 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Prediction of crack propagation in layered ceramics with strong interfaces Author(s) Náhlík, Luboš (UFM-A) RID, ORCID
Šestáková, L. (CZ)
Hutař, Pavel (UFM-A) RID, ORCID
Bermejo, R. (AT)Number of authors 4 Source Title Engineering Fracture Mechanics. - : Elsevier - ISSN 0013-7944
Roč. 77, č. 11 (2010), s. 2192-2199Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords Ceramic laminate ; Crack propagation direction ; Residual stress ; Flaw tolerant ceramics ; Optimal design Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects KJB200410803 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA101/09/1821 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000280285800051 DOI 10.1016/j.engfracmech.2010.02.023 Annotation The crack propagation under flexure in layered ceramics designed with strong interfaces and high compressive residual stresses is investigated by means of FE simulations and compared with experimental observations on Al2O3–ZrO2 multilayered ceramics. The change of crack propagation direction on the interface is assessed based on the strain energy density and maximum tangential stress criteria. The influence of the layer thickness on the crack propagation direction is evaluated. The estimated crack path (crack deflection angle) obtained through FE calculations is in agreement with the experimental observations. The results can be used for the design of layered ceramics with enhanced crack growth resistance Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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