Publication detail

The Effect of Specimen Size on the Determination of Residual Stress in Polymer Pipe Wall

PODUŠKA, J. KUČERA, J. HUTAŘ, P. ŠEVČÍK, M. KŘIVÁNEK, J. SADÍLEK, J. NÁHLÍK, L.

Original Title

The Effect of Specimen Size on the Determination of Residual Stress in Polymer Pipe Wall

Type

conference paper

Language

English

Original Abstract

As a result of the production process, there are axial and tangential residual stresses present in pressure pipes made of polymer materials such as polyethylene or polypropylene. The residual stress magnitude and distribution have a significant influence on the pipe lifetime. In this contribution the results from experiments focused on determining the tangential residual stress distribution in the walls of polypropylene pipes of different dimensions are compared. The experimental method used involves measuring the deformation of ring shaped specimens that were slit in the axial direction. Measured deformation of the ring specimen is a result of the tangential and axial stress superposition. However, the effect of the axial residual stress depends on the specimen axial dimension and tangential residual stress estimated basing on experimental data should be corrected according to axial dimension of the specimen used. The correction suggested in this article is determined based on three-dimensional FEM simulations of the experiment.

Keywords

polypropylene pipes, residual stress, ring deformation methodology

Authors

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

RIV year

2015

Released

30. 1. 2015

Publisher

TTP

Location

Switzerland

ISBN

978-3-03835-235-8

Book

Advances in Fracture and Damage Mechanics XIII

Edition

Key Engineering Materials

Edition number

627

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Year of study

2015

Number

627

State

Swiss Confederation

Pages from

141

Pages to

144

Pages count

4

BibTex

@inproceedings{BUT110121,
  author="Jan {Poduška} and Jaroslav {Kučera} and Pavel {Hutař} and Martin {Ševčík} and Josef {Křivánek} and Jiří {Sadílek} and Luboš {Náhlík}",
  title="The Effect of Specimen Size on the Determination of Residual Stress in Polymer Pipe Wall",
  booktitle="Advances in Fracture and Damage Mechanics XIII",
  year="2015",
  series="Key Engineering Materials",
  journal="Key Engineering Materials (print)",
  volume="2015",
  number="627",
  pages="141--144",
  publisher="TTP",
  address="Switzerland",
  doi="10.4028/www.scientific.net/KEM.627.141",
  isbn="978-3-03835-235-8",
  issn="1013-9826"
}