Publication result detail

Damage of multilayer polymer materials under creep loading

ZOUHAR, M.; HUTAŘ, P.; NÁHLÍK, L.; KNÉSL, Z.

Original Title

Damage of multilayer polymer materials under creep loading

English Title

Damage of multilayer polymer materials under creep loading

Type

Peer-reviewed article not indexed in WoS or Scopus

Original 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.

English 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.

Keywords

CMOD, material interface, creep, fracture mechanics

Key words in English

CMOD, material interface, creep, fracture mechanics

Authors

ZOUHAR, M.; HUTAŘ, P.; NÁHLÍK, L.; KNÉSL, Z.

RIV year

2011

Released

05.01.2011

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Volume

2011

Number

465

State

Swiss Confederation

Pages from

153

Pages to

156

Pages count

4

BibTex

@article{BUT49978,
  author="Michal {Zouhar} and Pavel {Hutař} and Luboš {Náhlík} and Zdeněk {Knésl}",
  title="Damage of multilayer polymer materials under creep loading",
  journal="Key Engineering Materials (print)",
  year="2011",
  volume="2011",
  number="465",
  pages="153--156",
  issn="1013-9826"
}