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Estimation of the critical configuration of a crack arrested at the interface between two materials
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SYSNO ASEP 0384336 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Estimation of the critical configuration of a crack arrested at the interface between two materials Author(s) Ševčík, Martin (UFM-A) RID
Hutař, Pavel (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)
Náhlík, Luboš (UFM-A) RID, ORCID
Zouhar, M. (CZ)Source Title Computational Materials Science. - : Elsevier - ISSN 0927-0256
Roč. 64, NOV (2012), s. 225-228Number of pages 4 s. Action International Workshop on Computational Mechanics of Materials - IWCMM /21./ Event date 22.08.2011-24.08.2011 VEvent location Limerick Country IE - Ireland Event type WRD Language eng - English Country NL - Netherlands Keywords bimaterial ; fracture mechanics of an interface ; generalised stress intensity factor Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GA106/09/0279 GA ČR - Czech Science Foundation (CSF) GA101/09/1821 GA ČR - Czech Science Foundation (CSF) ED1.1.00/02.0068 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 UT WOS 000308396200047 DOI 10.1016/j.commatsci.2012.04.049 Annotation Surface crack propagation in a thin soft protective layer on a massive stiffer substrate is analysed using generalised linear elastic fracture mechanics. The growth of the initial crack is considered in both forward and sideways directions and the influence of the interface between the protective layer and massive substrate on the final crack configuration is investigated. It is shown that, depending on the elastic mismatch, the part of the crack front can be arrested at the interface protective layer/substrate and the rest of the crack grows continuously sideways only. The effective value of a stress intensity factor is used in order to predict the conditions under which the crack will propagate through the interface into the second material. Corresponding calculations have been made by finite elements. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2013
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