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dc.contributor.authorGrogan, DM,Bradaigh, CMO,Leen, SB
dc.contributor.authorGrogan, David M.
dc.contributor.authorÓ Brádaigh, Conchúr M.
dc.date.accessioned2015-12-17T11:35:44Z
dc.date.available2015-12-17T11:35:44Z
dc.date.issued2014-10-07
dc.identifier.citationGrogan, DM,Bradaigh, CMO,Leen, SB (2015) 'A combined XFEM and cohesive zone model for composite laminate microcracking and permeability'. Composite Structures, 120 :246-261.en_IE
dc.identifier.issn0263-8223
dc.identifier.urihttp://hdl.handle.net/10379/5413
dc.descriptionJournal articleen_IE
dc.description.abstractA novel computational methodology for predicting three-dimensional microcracking and permeability in composite laminates is presented, The methodology simulates microcrack initiation and propagation using the extended finite element method (XFEM) and delamination using a mixed-mode cohesive zone model. Random microcrack initiation is modelled using a random (Weibull) distribution of fracture strengths. The Weibull distribution is adjusted to account for specimen volume, allowing mesh independent crack density predictions. An alternate method is also investigated, based on an elemental representation of defects using measured void geometry. The predicted microcracking and damage distributions are shown to correlate closely with 3D X-ray CT (computed tomography) scans of cryogenically cycled specimens. Crack opening displacements are consistent with laminate test measurements. Permeabilities, based on the dimensions of the leak paths, were found to be within the measured range for various CF (carbon fibre)/PEEK materials.en_IE
dc.description.sponsorshipEuropean Space Agency Network Partnering Initiative; Irish Research Council Enterprise Partnership Schemeen_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherElsevier ScienceDirecten_IE
dc.relation.ispartofComposite Structuresen
dc.subjectCarbon compositesen_IE
dc.subjectMicrocrackingen_IE
dc.subjectPermeabilityen_IE
dc.subjectXFEMen_IE
dc.subjectCohesive zone modelen_IE
dc.subjectCryogenic cyclingen_IE
dc.titleA combined XFEM and cohesive zone model for composite laminate microcracking and permeabilityen_IE
dc.typeArticleen_IE
dc.date.updated2015-11-30T16:40:58Z
dc.identifier.doi10.1016/j.compstruct.2014.09.068
dc.local.publishedsourcehttp://dx.doi.org/10.1016/j.compstruct.2014.09.068en_IE
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funder|~|
dc.internal.rssid8256116
dc.local.contactSean Leen, Mechanical & Biomedical Eng, Eng-2051, New Engineering Building, Nui Galway. 5955 Email: sean.leen@nuigalway.ie
dc.local.copyrightcheckedYes
dc.local.versionSUBMITTED
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