Damage of Multilayer Polymer Materials under Creep Loading
| Periodical | Key Engineering Materials (Volume 465) |
|---|---|
| Main Theme | Materials Structure & Micromechanics of Fracture VI |
| Edited by | Pavel Šandera |
| Pages | 153-156 |
| DOI | 10.4028/www.scientific.net/KEM.465.153 |
| Citation | Michal Zouhar et al., 2011, Key Engineering Materials, 465, 153 |
| Online since | January, 2011 |
| Authors | Michal Zouhar, Pavel Hutař, Luboš Náhlík, Zdeněk Knésl |
| Keywords | CMOD, Creep, Fracture Mechanic, Material Interface |
| Price | US$ 28,- |
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.
