Publication detail

A fracture mechanics assessment of surface cracks existing in protective layers of multilayer composite pipes

HUTAŘ, P. NÁHLÍK, L. ŠESTÁKOVÁ, L. ŠEVČÍK, M. KNÉSL, Z. NEZBEDOVÁ, E.

Czech title

Lomově mechanické hodnocení povrchových trhlin existujících v ochranných vrstvách vícevrstvých kompozitních trubek

English title

A fracture mechanics assessment of surface cracks existing in protective layers of multilayer composite pipes

Type

journal article - other

Language

en

Original abstract

The influence of cracked protective layer on the integrity of composite multilayer pipes is analysed in this paper. The multilayer pipe is modeled as a particular case of a bi-material body consisting of two different homogeneous materials. The problem is studied under assumptions corresponding to small scale yielding conditions and ideal adhesion between protective and main layers is assumed. The case of a crack with its tip at the interface between protective and main layers is analyzed in details and the influence of the material composition on the corresponding critical pressure for a brittle-like failure is discussed. An approximate approach based on estimation of crack mouth opening displacement for thin protective layers is suggested. The results can be applied to study of scratch resistance of multi-layered plastic pipes.

Czech abstract

V ?lánku je analyzován vliv ochranné vrstvy s trhlinou na integritu kompozitních vícevrstvých trubek. Detailn? je analyzován p?ípad trhliny s vrcholem na rozhraní mezi ochrannou a hlavní vrstvou a je diskutován vliv materiálových vlastností jednotlivých vrstev na odpovídající hodnoty kritického tlaku zp?sobujícího k?ehký lom systému.

English abstract

The influence of cracked protective layer on the integrity of composite multilayer pipes is analysed in this paper. The multilayer pipe is modeled as a particular case of a bi-material body consisting of two different homogeneous materials. The problem is studied under assumptions corresponding to small scale yielding conditions and ideal adhesion between protective and main layers is assumed. The case of a crack with its tip at the interface between protective and main layers is analyzed in details and the influence of the material composition on the corresponding critical pressure for a brittle-like failure is discussed. An approximate approach based on estimation of crack mouth opening displacement for thin protective layers is suggested. The results can be applied to study of scratch resistance of multi-layered plastic pipes.

Keywords in Czech

ochranná vrstva, poškození vícevrstvých trubek, lomová mechanika, bi-materiálové rozhraní, zobecněný faktor intenzity napětí

Keywords in English

protective layers, multilayer pipes damage, fracture mechanics, bi-material interface, generalized stress intensity factor

RIV year

2009

Released

09.10.2009

Publisher

Elsevier

Location

Amsterdam, Nizozemí

ISSN

0263-8223

Journal

COMPOSITE STRUCTURES

Volume

92

Number

5

Pages from–to

1120–1125

Pages count

6

BIBTEX


@article{BUT49609,
  author="Pavel {Hutař} and Luboš {Náhlík} and Lucie {Malíková} and Martin {Ševčík} and Zdeněk {Knésl} and Eva {Nezbedová},
  title="A fracture mechanics assessment of surface cracks existing in protective layers of multilayer composite pipes",
  journal="COMPOSITE STRUCTURES",
  year="2009",
  volume="92",
  number="5",
  month="October",
  pages="1120--1125",
  publisher="Elsevier",
  address="Amsterdam, Nizozemí",
  issn="0263-8223"
}