Paper Title:
Damage of Multilayer Polymer Materials under Creep Loading
  Abstract

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.

  Info
Periodical
Edited by
Pavel Šandera
Pages
153-156
DOI
10.4028/www.scientific.net/KEM.465.153
Citation
M. Zouhar, P. Hutař, L. Náhlík, Z. Knésl, "Damage of Multilayer Polymer Materials under Creep Loading", Key Engineering Materials, Vol. 465, pp. 153-156, 2011
Online since
January 2011
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