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Crack stability condition at the interface between two polymer materials
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SYSNO ASEP 0370346 Document Type K - Proceedings Paper (Czech conf.) R&D Document Type Conference Paper Title Crack stability condition at the interface between two polymer materials Author(s) Zouhar, Michal (UFM-A)
Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Ševčík, Martin (UFM-A) RID
Knésl, Zdeněk (UFM-A)Number of authors 5 Source Title Applied Mechanics 2011. - Brno, Česká republika : Institute of Physics of Materials, Academy of Sciences of the Czech Republic, 2011 / Náhlík Luboš ; Zouhar Michal ; Ševčík Martin ; Seitl Stanislav ; Majer Zdeněk - ISBN 978-80-87434-03-1
S. 247-250Number of pages 4 s. Action Applied Mechanics 2011 Event date 18.04.2011-20.04.2011 VEvent location Velké Bílovice Country CZ - Czech Republic Event type EUR Language eng - English Country CZ - Czech Republic Keywords stability criterion ; critical distance ; bi-material ; generalized stress intensity factor Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GA106/09/0279 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation The aim of this work is to study the behaviour of crack with its tip at the interface of two polymer materials. The numerical model of cracked bi-material tension specimen is investigated and a stability criterion was tested. Usually a stability criterion based on general stress concentrator needs the relation between critical value of the generalized stress intensity factor and critical value of the stress intensity factor (fracture toughness). This relation is a function of elastic mismatch between particular materials, fracture toughness of the main material and critical distance d. Estimation of d is usually not straightforward and different authors use different approaches for its determination. Therefore main aim of this study is mutual comparison of published approaches for d estimation and to quantify their effect on the critical loading value. The results of this study can lead to better lifetime prediction and design of layered structures. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2012
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