Williams expansion-based approximation of the stress field in an Al 2024 body with a crack from optical measurements

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dc.contributor.authorSeitl, Stanislavcs
dc.contributor.authorMalíková, Luciecs
dc.contributor.authorSobek, Jakubcs
dc.contributor.authorFrantík, Petrcs
dc.contributor.authorLopéz-Crespo, Pablocs
dc.coverage.issue41cs
dc.coverage.volume11cs
dc.date.accessioned2020-08-04T11:02:05Z
dc.date.available2020-08-04T11:02:05Z
dc.date.issued2017-07-01cs
dc.description.abstractA study on the approximation of the stress field in the vicinity of crack tip in a compact tension specimen made from Al 2024-T351 is presented. Crack tip stress tensor components are expressed using the linear elastic fracture mechanics (LEFM) theory in this work, more precisely via its multi-parameter formulation, i.e. by Williams power series (WPS). Determination of coefficients of terms of this series is performed using a least squares-based regression technique known as over deterministic method (ODM) for which displacements data obtained experimentally via optical measurements are taken as inputs. The stress fields reconstructed based on the displacement data obtained experimentally by means of optical measurements are verified by means of the stress field approximations derived for the normalized CT specimen via hybrid elementsen
dc.formattextcs
dc.format.extent323-331cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationFrattura ed Integrita Strutturale. 2017, vol. 11, issue 41, p. 323-331.en
dc.identifier.doi10.3221/IGF-ESIS.41.43cs
dc.identifier.issn1971-8993cs
dc.identifier.other143151cs
dc.identifier.urihttp://hdl.handle.net/11012/180638
dc.language.isoencs
dc.publisherGruppo Italiano Fratturacs
dc.relation.ispartofFrattura ed Integrita Strutturalecs
dc.relation.urihttps://www.fracturae.com/index.php/fis/article/view/IGF-ESIS.41.43cs
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.subjectCrack tip fieldsen
dc.subjectOptical measurementsen
dc.subjectDICen
dc.subjectWilliams power seriesen
dc.subjectHigher-order termsen
dc.subjectStress field reconstructionen
dc.subjectMulti-parameter approximationen
dc.titleWilliams expansion-based approximation of the stress field in an Al 2024 body with a crack from optical measurementsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-143151en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:02:05en
sync.item.modts2020.08.04 12:43:19en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavební mechanikycs
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