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Residual stress in polyethylene pipes
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SYSNO ASEP 0463439 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Residual stress in polyethylene pipes Author(s) Poduška, Jan (UFM-A) ORCID
Hutař, Pavel (UFM-A) RID, ORCID
Kučera, J. (CZ)
Frank, A. (AT)
Sadílek, J. (CZ)
Pinter, G. (AT)
Náhlík, Luboš (UFM-A) RID, ORCIDNumber of authors 7 Source Title Polymer Testing. - : Elsevier - ISSN 0142-9418
Roč. 54, SEP (2016), s. 288-295Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords polyethylene pipe ; residual stress ; ring slitting method ; lifetime estimation Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects LM2015069 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) LQ1601 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 UT WOS 000382798300036 EID SCOPUS 84979884681 DOI 10.1016/j.polymertesting.2016.07.017 Annotation This paper deals with residual stress in polyethylene (PE) pipes as an important factor that influences their lifetime. Residual hoop stress distribution in a PE pipe was determined using a methodology previously carried out by the authors on polypropylene pipes. Axial residual stress magnitude was determined by comparison of experimental data and finite element modelling. Based on the obtained results, a new simplified methodology for determining the residual hoop stress is proposed. The method needs only one circular specimen made of pipe, but, unlike older methods, provides a more precise estimation of residual hoop stress distribution taking into account its exponential shape. Some older results from literature are recalculated using this method and residual hoop stress of various PE pipe grades and dimensions are then compared. To provide an idea of residual hoop stress influence on lifetime of a pipe, a lifetime estimation is carried out for the examined pipe. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2017
Number of the records: 1