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Propagation of fatigue crack through a bimaterial interface
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SYSNO ASEP 0047127 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 Propagation of fatigue crack through a bimaterial interface Title Šíření únavové trhliny přes rozhraní dvou materiálů Author(s) Knésl, Zdeněk (UFM-A)
Náhlík, Luboš (UFM-A) RID, ORCID
Bareš, Pavel (UFM-A)Source Title 17th Colloquium on Fundamentals Fatigue Mechanisms. - Vídeň : Institute of materials physics, University of Vienna, 2006
S. 10Number of pages 1 s. Action Colloquium on Fundamentals Fatigue Mechanisms /17./ Event date 23.03.2006-24.03.2006 VEvent location Vídeň Country AT - Austria Event type WRD Language eng - English Country AT - Austria Keywords bimaterial interface ; fatigue crack Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GP106/04/P084 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation The contribution describes a study of the behavior of a fatigue crack growing in one elastic material and penetrating through the interface into a second material. The study aims especially to quantify the influence of the interface on the rate and threshold value of a fatigue crack propagating perpendicularly to the interface. It is suggested that the controlling variable for the propagation of the fatigue crack is the effective value of the stress intensity factor range, Keff , calculated by using the equality of the sizes of the plastic zones in the homogeneous and bi-material bodies. It is shown that the fatigue crack propagation rate and the corresponding threshold value are strongly influenced by the existence of an interface between two materials. A tentative procedure suggested in the paper makes it possible to quantify the effect and determine the dependence of the threshold value of a fatigue crack growing through the interface on the bi-material parameters. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2007
Number of the records: 1