Publication detail
Numerical assessment of the HDPE pipe lifetime
HUTAŘ, P. ZOUHAR, M. ŠEVČÍK, M. KNÉSL, Z. NEZBEDOVÁ, E.
Czech title
Hodnocení životnosti HDPE potrubí pomocí numerických metod
English title
Numerical assessment of the HDPE pipe lifetime
Type
conference paper
Language
en
Original abstract
Using linear elastic fracture mechanics a new methodology for a lifetime assessment of internally pressurized polymer pipes was developed. The concept is based on the numerical calculation of stress intensity factors for pipes under different loading conditions in combination with experimentally determined creep crack growth kinetics. Comparison of simulated lifetimes with experimental data from tests of internally pressurized pipes proved the principal applicability of the concept suggested. Major parameters affecting the pipe lifetime are identified and discussed. Combination of the creep crack growth tests and numerical simulations can be a very powerful tool for lifetime estimation of plastic pipes under different loading conditions.
Czech abstract
V práci je navržen postup vedoucí k odhadu životnosti polymerního potrubí. Pomocí řady numerických simulací byl odhadnut skutečný tvar poloeliptické trhliny. Práce obsahuje vztah pro určení součinitele intenzity napětí pro trhlinu, rostoucí z vnitřní stěny trubky. Změna tvaru trhliny s délkou trhliny je vzata v úvahu.
English abstract
Using linear elastic fracture mechanics a new methodology for a lifetime assessment of internally pressurized polymer pipes was developed. The concept is based on the numerical calculation of stress intensity factors for pipes under different loading conditions in combination with experimentally determined creep crack growth kinetics. Comparison of simulated lifetimes with experimental data from tests of internally pressurized pipes proved the principal applicability of the concept suggested. Major parameters affecting the pipe lifetime are identified and discussed. Combination of the creep crack growth tests and numerical simulations can be a very powerful tool for lifetime estimation of plastic pipes under different loading conditions.
Keywords in Czech
lomová mechanika; polymerní potrubí; zbytková životnost; součinitel intenzity napětí
Keywords in English
fracture mechanics; polymer pipe; residual lifetime; stress intensity factor
RIV year
2011
Released
20.08.2011
Location
Merseburg
ISBN
978-3-86829-400-2
Book
13. Tagung Problemseminar Deformation und Bruchverhalten von Kunstoffen
Pages from–to
153–159
Pages count
598
BIBTEX
@inproceedings{BUT88374,
author="Pavel {Hutař} and Michal {Zouhar} and Martin {Ševčík} and Zdeněk {Knésl} and Eva {Nezbedová},
title="Numerical assessment of the HDPE pipe lifetime",
booktitle="13. Tagung Problemseminar Deformation und Bruchverhalten von Kunstoffen",
year="2011",
month="August",
pages="153--159",
address="Merseburg",
isbn="978-3-86829-400-2"
}