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Numerical estimation of crack behaviour and apparent fracture toughness of layered composites with strong interfaces
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SYSNO ASEP 0332095 Document Type C - Proceedings Paper (int. conf.) R&D Document Type O - Ostatní Title Numerical estimation of crack behaviour and apparent fracture toughness of layered composites with strong interfaces Title Numerický odhad chování trhliny a zdánlivá lomová houževnatost vrstvených kompozitů s ostrým rozhraním Author(s) Šestáková, Lucie (UFM-A)
Náhlík, Luboš (UFM-A) RID, ORCID
Hutař, Pavel (UFM-A) RID, ORCIDNumber of authors 3 Source Title Proceedings of 12th International Conference on Fracture. - Ottawa : NRCan - CANMET, 2009 - ISBN N Pages s. 1-10 Number of pages 10 s. Publication form CD-ROM - CD-ROM Action International Conference on Fracture /12./ Event date 12.07.2009-17.07.2009 VEvent location Ottawa Country CA - Canada Event type WRD Language eng - English Country CA - Canada Keywords ceramic laminate ; crack propagation direction ; 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) GA101/08/1623 GA ČR - Czech Science Foundation (CSF) GD106/09/H035 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation Crack growth in a ceramics laminate body was investigated with regard to change of crack propagation direction on material interfaces. During experimental testing the discrepancy in crack propagation direction occurred in contrast to expectations (straight propagation under mode I of loading was assumed). Conditions of experimental method (four point bending) were modeled by the finite element method. The maximum tangential stress criterion and a criterion based on strain energy density factor were used for the estimation of crack propagation directions on material interfaces. The paper presented demonstrates possibilities for the estimation of crack behavior during its growth in ceramics laminates. The results obtained can be used for the design of new layered ceramics and the reliable estimation of crack behavior in the materials considered. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2010
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