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A numerical methodology for lifetime estimation of HDPE pressure pipes
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SYSNO ASEP 0370344 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title A numerical methodology for lifetime estimation of HDPE pressure pipes Author(s) Hutař, Pavel (UFM-A) RID, ORCID
Ševčík, Martin (UFM-A) RID
Náhlík, Luboš (UFM-A) RID, ORCID
Pinter, G. (AT)
Frank, A. (AT)
Mitev, I. (AT)Number of authors 6 Source Title Engineering Fracture Mechanics. - : Elsevier - ISSN 0013-7944
Roč. 78, č. 17 (2011), s. 3049-3058Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords time to failure curve ; fracture mechanics ; PE pipes ; creep crack growth ; lifetime estimation Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GA106/09/0279 GA ČR - Czech Science Foundation (CSF) GC101/09/J027 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000301734000017 DOI 10.1016/j.engfracmech.2011.09.001 Annotation 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. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2012
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