Path (un)predictability of two interacting cracks in polycarbonate sheets using Digital Image Correlation

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorKoivisto, Juhaen_US
dc.contributor.authorDalbe, M. J.en_US
dc.contributor.authorAlava, M. J.en_US
dc.contributor.authorSantucci, S.en_US
dc.contributor.departmentDepartment of Applied Physicsen_US
dc.contributor.departmentÉcole normale supérieure de Lyonen_US
dc.contributor.departmentUniversity of Lyonen_US
dc.date.accessioned2016-10-13T06:04:07Z
dc.date.issued2016-08-31en_US
dc.description.abstractCrack propagation is tracked here with Digital Image Correlation analysis in the test case of two cracks propagating in opposite directions in polycarbonate, a material with high ductility and a large Fracture Process Zone (FPZ). Depending on the initial distances between the two crack tips, one may observe different complex crack paths with in particular a regime where the two cracks repel each other prior to being attracted. We show by strain field analysis how this can be understood according to the principle of local symmetry: the propagation is to the direction where the local shear - mode KII in fracture mechanics language - is zero. Thus the interactions exhibited by the cracks arise from symmetry, from the initial geometry, and from the material properties which induce the FPZ. This complexity makes any long-range prediction of the path(s) impossible.en
dc.description.versionPeer revieweden
dc.format.extent1-8
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationKoivisto , J , Dalbe , M J , Alava , M J & Santucci , S 2016 , ' Path (un)predictability of two interacting cracks in polycarbonate sheets using Digital Image Correlation ' , Scientific Reports , vol. 6 , 32278 , pp. 1-8 . https://doi.org/10.1038/srep32278en
dc.identifier.doi10.1038/srep32278en_US
dc.identifier.issn2045-2322
dc.identifier.otherPURE UUID: 4216423d-16bd-41c4-9380-913f4cd28d4fen_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/4216423d-16bd-41c4-9380-913f4cd28d4fen_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=84985018921&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/7392710/srep32278.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/22878
dc.identifier.urnURN:NBN:fi:aalto-201610134978
dc.language.isoenen
dc.relation.ispartofseriesScientific Reportsen
dc.relation.ispartofseriesVolume 6en
dc.rightsopenAccessen
dc.titlePath (un)predictability of two interacting cracks in polycarbonate sheets using Digital Image Correlationen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
Files