Počet záznamů: 1
Damage of multilayer polymer materials under creep loading
0353975 - UFM-A 2011 RIV CH eng J - Článek v odborném periodiku
Zouhar, Michal - Hutař, Pavel - Náhlík, Luboš - Knésl, Zdeněk
Damage of multilayer polymer materials under creep loading.
Key Engineering Materials. Roč. 465, - (2011), s. 153-156 ISSN 1013-9826
Grant CEP: GA ČR GA106/09/0279; GA ČR GC101/09/J027
Výzkumný záměr: CEZ:AV0Z20410507
Klíčová slova: CMOD * material interface * creep * fracture mechanics
Kód oboru RIV: JL - Únava materiálu a lomová mechanika
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.
Trvalý link: http://hdl.handle.net/11104/0193074