Publication result detail

Inaccuracy in Residual Stress Estimation and Its Influence on the Residual Lifetime of Polymer Pipes

ŠEVČÍK, M.; PODUŠKA, J.; NÁHLÍK, L.; HUTAŘ, P.; KUČERA, J.

Original Title

Inaccuracy in Residual Stress Estimation and Its Influence on the Residual Lifetime of Polymer Pipes

English Title

Inaccuracy in Residual Stress Estimation and Its Influence on the Residual Lifetime of Polymer Pipes

Type

WoS Article

Original Abstract

This paper presents a methodology suitable for estimation of residual lifetime of polymer pipes. The linear and non-linear distribution of residual stresses in the pipe wall is studied using FEM analysis. The approximate relation for the stress intensity factor calculation is presented. It is shown that the presented relation gives a stress intensity factor similar to the FEM analysis for the linear or non-linear distribution of residual stress. The suggested procedure produces a slightly conservative lifetime estimation where the accuracy of the procedure increases with increasing ratio between applied internal pressure level to residual stress level. The accuracy of the residual stress estimation and corresponding stress intensity factor is discussed and a final recommendation for lifetime determination based on simplified methodology is given.

English abstract

This paper presents a methodology suitable for estimation of residual lifetime of polymer pipes. The linear and non-linear distribution of residual stresses in the pipe wall is studied using FEM analysis. The approximate relation for the stress intensity factor calculation is presented. It is shown that the presented relation gives a stress intensity factor similar to the FEM analysis for the linear or non-linear distribution of residual stress. The suggested procedure produces a slightly conservative lifetime estimation where the accuracy of the procedure increases with increasing ratio between applied internal pressure level to residual stress level. The accuracy of the residual stress estimation and corresponding stress intensity factor is discussed and a final recommendation for lifetime determination based on simplified methodology is given.

Keywords

residual stress; polymer pipe; slow crack growth; lifetime estimation

Key words in English

residual stress; polymer pipe; slow crack growth; lifetime estimation

Authors

ŠEVČÍK, M.; PODUŠKA, J.; NÁHLÍK, L.; HUTAŘ, P.; KUČERA, J.

Released

20.09.2013

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Volume

2013

Number

592-593

State

Swiss Confederation

Pages from

165

Pages to

168

Pages count

4

BibTex

@article{BUT109695,
  author="Martin {Ševčík} and Jan {Poduška} and Luboš {Náhlík} and Pavel {Hutař} and Jaroslav {Kučera}",
  title="Inaccuracy in Residual Stress Estimation and Its Influence on the Residual Lifetime of Polymer Pipes",
  journal="Key Engineering Materials (print)",
  year="2013",
  volume="2013",
  number="592-593",
  pages="165--168",
  doi="10.4028/www.scientific.net/KEM.592-593.165",
  issn="1013-9826"
}