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Quantification of the influence of vertex singularities on fatigue crack
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SYSNO ASEP 0092859 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Quantification of the influence of vertex singularities on fatigue crack Author(s) Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)
Šestáková, Lucie (UFM-A)Source Title 17th International Workshop on Computational Mechanics of Materials, 17th. - Paris : Centre des Maériaux, 2007
S. 139-139Number of pages 1 s. Action IWCMM17 Event date 22.08.2007-24.08.2007 VEvent location Paris Country FR - France Event type WRD Language eng - English Country FR - France Keywords vertex singularity ; generalized stress intensity factor ; stress singularity ; fatigue crack ; V-notch Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GP106/06/P239 GA ČR - Czech Science Foundation (CSF) GA101/05/0320 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation The effect of vertex singularity on fatigue crack behaviour is presented in the article. The methodology based on generalized stress intensity factor and model of Vnotch is used for reliable estimation of the fatigue crack growth rate in the area close to the free surface, where the effect of the vertex singularity is dominant. It is shown that decrease of the crack singularity exponent close to the vertex point leads to a decrease in the fatigue crack growth rate and contributes to a typical curved crack front observed experimentally for through crack. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2008
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