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Damage of multilayer polymer materials under creep loading
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SYSNO ASEP 0353975 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Damage of multilayer polymer materials under creep loading Author(s) Zouhar, Michal (UFM-A)
Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)Number of authors 4 Source Title Key Engineering Materials - ISSN 1013-9826
Roč. 465, - (2011), s. 153-156Number of pages 4 s. Language eng - English Country CH - Switzerland Keywords CMOD ; material interface ; creep ; fracture mechanics Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GA106/09/0279 GA ČR - Czech Science Foundation (CSF) GC101/09/J027 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000291704700032 Annotation Failure of layered materials is frequently caused by the existence of interfaces between single layers. In structures loaded by long-term constant stress the damage can be described on micro-scale by material changes due to active creep mechanism and at the macro-level by a corresponding change of the stress and strain field. In the contribution the behavior of a crack propagating through the interface is analyzed. Primary attention is devoted to a crack with its tip at the interface under creep exposition. The step change of material properties at the bi-material interface means that standard fracture mechanics access is not applicable and a modified approach based on generalization of the classical concept has to be used. The approach is illustrated on the damage of a plastic pipe with protective layer. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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