Publication detail

Crack behavior in a welded polyolefin pipe

ŠEVČÍK, M. HUTAŘ, P. NÁHLÍK, L.

Czech title

Lomové chování svařovaných polyolefinových trubek

English title

Crack behavior in a welded polyolefin pipe

Type

journal article - other

Language

en

Original abstract

A three-dimensional model of a pressured polymer pipe with a weld is created in order to estimate the stress intensity factor for a crack located inside the weld. A comparison with values obtained for an edge-cracked tension specimen, usually employed for an experimental determination of weld properties, is performed. The difference between the stress intensity factor in a homogeneous pipe and the results taking into account the changes in material properties inside the weld is presented. A conservative and easily applicable relationship for calculating the stress intensity factor in a pipe weld is proposed.

Czech abstract

V práci je studován vliv materiálové nehomogenity, způsobené svařováním polyolefinových potrubí, na chování trhliny, iniciované uprostřed svaru. Ukazuje se, že přítomnost materiálové nehomogenity ve svaru výrazně zvyšuje hodnotu součinitele intenzity napětí a tím dojde ke značné redukci životnosti svarového spoje.

English abstract

A three-dimensional model of a pressured polymer pipe with a weld is created in order to estimate the stress intensity factor for a crack located inside the weld. A comparison with values obtained for an edge-cracked tension specimen, usually employed for an experimental determination of weld properties, is performed. The difference between the stress intensity factor in a homogeneous pipe and the results taking into account the changes in material properties inside the weld is presented. A conservative and easily applicable relationship for calculating the stress intensity factor in a pipe weld is proposed.

Keywords in Czech

lomová mechanika; polyolefinová trubka; polymerní svar; součinitel intenzity napětí; gradientní materiál

Keywords in English

fracture mechanics, polyolefin pipe, polymer weld, stress intensity factor, graded structure

RIV year

2011

Released

21.07.2011

Publisher

Springer

ISSN

0191-5665

Journal

MECHANICS OF COMPOSITE MATERIALS

Volume

47

Number

3

Pages from–to

263–270

Pages count

8

BIBTEX


@article{BUT72899,
  author="Martin {Ševčík} and Pavel {Hutař} and Luboš {Náhlík},
  title="Crack behavior in a welded polyolefin pipe",
  journal="MECHANICS OF COMPOSITE MATERIALS",
  year="2011",
  volume="47",
  number="3",
  month="July",
  pages="263--270",
  publisher="Springer",
  issn="0191-5665"
}