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An evaluation of the stress intensity factor in functionally graded materials
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SYSNO ASEP 0338918 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title An evaluation of the stress intensity factor in functionally graded materials Author(s) Ševčík, Martin (UFM-A) RID
Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)Number of authors 4 Source Title Applied and Computational Mechanics - ISSN 1802-680X
Roč. 3, č. 2 (2009), s. 401-410Number of pages 10 s. Language eng - English Country CZ - Czech Republic Keywords functionally graded material ; power-law material change Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GD106/09/H035 GA ČR - Czech Science Foundation (CSF) GC101/09/J027 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation Functionally graded materials (FGM) are characterised by variations in their material properties in terms of their geometry. They are often used as a coating for interfacial zones to protect the basic material against thermally or mechanically induced stresses. FGM can be also produced by technological process for example butt-welding of the polymer pipes. This work is focused on a numerical estimation of the stress intensity factor for cracks propa-gating through FGM structure. The philosophy of the FE model creation is focused on the discretization of mate-rial properties. The analysis of the FGM layer bonded from both sides with different homogenous materials has been performed to study the influence of the shape of the material property change. The thickness effect of the FGM layer is also discussed. In this pa-per, the above effects are quantified, and conclusions concerning the applicability of the proposed model are dis-cussed. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2010
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