On the connection between mode II and mode III effective thresholds in metals

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dc.contributor.authorVojtek, Tomášcs
dc.contributor.authorŽák, Stanislavcs
dc.contributor.authorPokluda, Jaroslavcs
dc.coverage.issue41cs
dc.coverage.volume11cs
dc.date.issued2017-07-01cs
dc.description.abstractClosure-free long cracks under the remote mode III loading grow in a more complicated way than those under the remote mode II. For bcc metals, a coplanar in-plane spreading of tongues driven by the local mode II loading components at crack-front asperities prevails while twisting of crack-front segments to mode I, often leading to factory-roof morphology, is typical for other materials. In bcc metals, therefore, the formulation of a quantitative relationship connecting effective thresholds in modes II and III demands to calculate the local mode II components of stress intensity factors at typical asperities of a crack front loaded in the remote mode III. Therefore, a numerical model of a serrated crack front was created and the results were compared with experimentally determined ratio of mode II and III effective thresholds for the ARMCO iron. Although the calculated crack-front roughness needs an experimental verification, the preliminary results indicate that the model can provide a quantitative explanation of the experimentally observed ratio of mode II and mode III effective thresholds in bcc metals.en
dc.formattextcs
dc.format.extent245-251cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationFrattura ed Integrita Strutturale. 2017, vol. 11, issue 41, p. 245-251.en
dc.identifier.doi10.3221/IGF-ESIS.41.33cs
dc.identifier.issn1971-8993cs
dc.identifier.orcid0000-0003-2368-3126cs
dc.identifier.orcid0000-0003-1329-8072cs
dc.identifier.orcid0000-0002-8449-1200cs
dc.identifier.other142361cs
dc.identifier.researcheridE-6515-2012cs
dc.identifier.researcheridE-9065-2014cs
dc.identifier.researcheridD-7239-2012cs
dc.identifier.urihttp://hdl.handle.net/11012/180643
dc.language.isoencs
dc.publisherItalian Group of Fracturecs
dc.relation.ispartofFrattura ed Integrita Strutturalecs
dc.relation.urihttps://www.fracturae.com/index.php/fis/article/view/IGF-ESIS.41.33cs
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.subjectModes II and IIIen
dc.subjectEffective thresholden
dc.subjectMicromechanismen
dc.subjectFinite element methoden
dc.subjectARMCO ironen
dc.titleOn the connection between mode II and mode III effective thresholds in metalsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-142361en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:48:08en
sync.item.modts2025.01.17 16:56:01en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav fyzikálního inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Pokročilé kovové materiály a kompozity na bázi kovůcs
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Ústav fyzikálního inženýrství
Pokročilé kovové materiály a kompozity na bázi kovů