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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F13%3APU110630" target="_blank" >RIV/00216305:26210/13:PU110630 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.592-593.165" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.592-593.165</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.592-593.165" target="_blank" >10.4028/www.scientific.net/KEM.592-593.165</a>

Result language
angličtina
Original language name
Inaccuracy in Residual Stress Estimation and Its Influence on the Residual Lifetime of Polymer Pipes
Original language description
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 intensityfactor 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 discussedand a final recommendation for lifetime determination based on simplified methodology is given.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JL - Fatigue and fracture mechanics
OECD FORD branch
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Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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