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The effect of the singularity induced by the free surface on fatigue crack growth in thin structures
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SYSNO ASEP 0319017 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The effect of the singularity induced by the free surface on fatigue crack growth in thin structures Title Vliv singularity indukované volným povrchem na rychlost šíření únavové trhliny v tenkých vzorcích Author(s) Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)Source Title Key Engineering Materials - ISSN 1013-9826
Roč. 385-387, - (2008), s. 317-320Number of pages 4 s. Action International Conference on Fracture and Damage Mechanics /7./ Event date 09.09.2008-11.09.2008 VEvent location Seoul Country KR - Korea, Republic of Event type WRD Language eng - English Country CH - Switzerland Keywords Fatigue crack ; vertex singularity ; thin structures Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GP106/06/P239 GA ČR - Czech Science Foundation (CSF) GA101/08/1623 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000262126000080 Annotation In many industrial applications is necessary to predict fatigue lifetime of thin structures, where the stress field near the crack front have a real three-dimensional nature. Due to the existence of vertex singularity in the point where the crack front touching free surface, crack propagation in 3D structures cannot be reduced to a series of plane strain or plane stress problems along the crack front edge. The paper describes the influence of vertex singularity on the distribution of the stresses around the crack front for three-dimensional body. The distribution of the stress singularity through the thickness of the specimen gives us indication of the crack behavior in thin structures. The results contribute to a better understanding of the crack behavior in thin structures, and can help to more reliable estimates of their residual fatigue life. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2009
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