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Transverse cracking of layered structures: evaluation of fatigue crack propagation
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SYSNO ASEP 0093996 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Transverse cracking of layered structures: evaluation of fatigue crack propagation Title Příčné šíření trhlin ve vrstevnatých materiálech: stanovení rychlosti šíření únavové trhliny Author(s) Náhlík, Luboš (UFM-A) RID, ORCID
Hutař, Pavel (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)Source Title Materials Science Forum - ISSN 0255-5476
Roč. 567-568, - (2008), s. 221-224Number of pages 4 s. Action MSMF /5./ Event date 27.06.2007-29.06.2007 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CH - Switzerland Keywords layered composites ; bi-material interface ; effective stress intensity factor 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) UT WOS 000253516900050 Annotation The objective of this paper is to investigate the transverse fatigue cracking of layered structures. To this end a fatigue crack propagation rate for a crack growing perpendicularly through the interfaces between individual layers of the structure is estimated. The suggested procedure takes into account the influence of different material properties of the layers on the stress field around the fatigue crack and the change of the stress singularity exponent in the special case of a crack touching the material interface. The assumptions of linear elastic fracture mechanics and elastic behaviour of the composite are considered. It is shown that the existence of the interfaces can have a negative influence on the residual fatigue life of layered structures. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2008
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