Critical length parameter of HDPE and its use in fatigue lifetime predictions

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dc.contributor.authorKozáková, Kamilacs
dc.contributor.authorTrávníček, Lukášcs
dc.contributor.authorPoduška, Jancs
dc.contributor.authorKlusák, Jancs
dc.coverage.issue71cs
dc.coverage.volume19cs
dc.date.accessioned2025-06-10T12:57:30Z
dc.date.available2025-06-10T12:57:30Z
dc.date.issued2024-12-12cs
dc.description.abstractThe contribution describes the fatigue lifetime predictions of polyethylene notched specimens based on the theory of critical distance. The approach uses the line method, which averages the axial stress over the critical distance. The critical distance is determined from experimental data of Cracked Round Bar (CRB) specimens and specimens with a model notch. From these two sets of experimental fatigue data and corresponding axial stress distributions, the critical distance is determined. The critical distance depends on the number of cycles to failure and notch radius. For this reason, the critical distance is modified by the ratio of stress concentration factors and the modified distance is used for fatigue lifetime predictions of notched specimens with various notch radii. Using this approach significant savings in testing time can be achieved. CRB fatigue tests are commonly used tests for ranking PE pipe grades and are easily available. Adding the fatigue tests of notched specimens with a model notch, the critical parameter can be found, and fatigue lifetime predictions of various notches can be calculated.en
dc.formattextcs
dc.format.extent211-222cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationFrattura ed Integrita Strutturale. 2024, vol. 19, issue 71, p. 211-222.en
dc.identifier.doi10.3221/IGF-ESIS.71.15cs
dc.identifier.issn1971-8993cs
dc.identifier.orcid0000-0002-0178-8536cs
dc.identifier.orcid0000-0002-5320-4854cs
dc.identifier.other193829cs
dc.identifier.researcheridGVT-9645-2022cs
dc.identifier.scopus55992861300cs
dc.identifier.urihttps://hdl.handle.net/11012/251615
dc.language.isoencs
dc.publisherGRUPPO ITALIANO FRATTURAcs
dc.relation.ispartofFrattura ed Integrita Strutturalecs
dc.relation.urihttps://www.fracturae.com/index.php/fis/article/view/5211cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1971-8993/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectPolyethyleneen
dc.subjecttheory of critical distancesen
dc.subjectnotchesen
dc.subjectCRB testsen
dc.subjectfatigue lifetime predictionsen
dc.titleCritical length parameter of HDPE and its use in fatigue lifetime predictionsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-193829en
sync.item.dbtypeVAVen
sync.item.insts2025.06.10 14:57:30en
sync.item.modts2025.06.10 14:32:56en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav mechaniky těles, mechatroniky a biomechanikycs
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