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T-stress values during fracture in wedge splitting test geometries: a numerical study
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SYSNO ASEP 0332515 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title T-stress values during fracture in wedge splitting test geometries: a numerical study Title Hodnota T-napětí v průběhu lomu ve vzorku pro wedge splitting test Author(s) Seitl, Stanislav (UFM-A) RID, ORCID
Hutař, Pavel (UFM-A) RID, ORCID
Veselý, V. (CZ)
Keršner, Z. (CZ)Number of authors 4 Source Title Brittle matrix composites 9. - Abington, Cambridge : Woodhead Publishing Limited, 2009 / Brandt A.M. ; Olek J. ; Marshall I.H. - ISBN 978-83-89687-48-7 Pages s. 419-428 Number of pages 10 s. Action Brittle matrix composites /9./ Event date 25.10.2009-28.10.2009 VEvent location Warsaw Country PL - Poland Event type WRD Language eng - English Country GB - United Kingdom Keywords concrete ; wedge splitting test ; T-stress ; fracture process zone Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects KJB200410901 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) GA101/08/1623 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation The paper is focused on a detailed numerical analysis of the stress field in specimens used for the wedge splitting test (WST), which is a convenient alternative to the classical bending and tensile tests within the area of determination of the fracture-mechanical parameters of quasi-brittle building materials, particularly cementitious composites. The near-crack-tip stress field in the WST specimen is described by means of constraint-based two-parameter fracture mechanics in the paper. Particular attention is paid to the influence of usual variants of boundary conditions used for this kind of testing procedure on the stress field in the cracked body. The next part of the paper aims at investigation of how much the detailed description of the near-crack-tip stress field obtained by applying the two-parameter fracture mechanics approach is then utilizable for an estimation of the size and shape of the non-linear failure zone in quasi-brittle materials, i.e. the fracture process zone. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2010
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