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Reliability assessment of an interface related singular stress concentrations
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SYSNO ASEP 0354553 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Reliability assessment of an interface related singular stress concentrations Author(s) Klusák, Jan (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)Number of authors 2 Source Title Multiscaling of Synthetic and Natural Systems with Self-Adaptive Capability. - Taipei : National Taiwan University of Science and Technology, 2010 / Sih George C. ; Chao C.K. - ISBN 978-986-02-3909-6 Pages s. 53-56 Number of pages 4 s. Publication form - - - Action International Conference on Mesomechanics /12./ Event date 21.06.2010-25.06.2010 VEvent location Taipei Country TW - Taiwan, Province of China Event type WRD Language eng - English Country TW - Taiwan, Province of China Keywords bi-material notch ; stability criterion ; crack initiation Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GAP108/10/2049 GA ČR - Czech Science Foundation (CSF) GA101/08/0994 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation In the paper the fracture mechanics properties of the bi-material notches are assessed by generalizing the standard crack linear elastic fracture mechanics for homogeneous media. First the singular stress field near the bi-material notch tip is investigated. Then criteria for the crack initiation and its subsequent propagation direction are formulated. To this aim it is supposed that the mechanism of crack propagation from the bi-material notch and that in the case of a crack in homogeneous materials is the same. In the contribution the stress and the energy approaches are used to assess the fracture initiation. In the case of the stress concentrations connected with material interface, more than one failure manner are possible. The damage manner caused by the existence of the bi-material notch will be evaluated and discussed. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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