Determination of the strain-energy release rate of a composite laminate under high-rate tensile deformation in fibre direction

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dc.contributor.authorHoffmann, Justus
dc.contributor.authorCui, Hao
dc.contributor.authorPetrinic, Nik
dc.date.accessioned2018-05-25T09:49:50Z
dc.date.available2018-05-25T09:49:50Z
dc.date.issued2018-05-19
dc.description.abstractIn order to successfully model design-critical impact loading events on laminated composite structures, the rate-dependency of the composite material has to be correctly reflected. In this context, the rate-dependency of the strain-energy release rate for fibre tensile failure under high-rate loading conditions has not yet been satisfyingly explored. This study employed compact tension specimens consisting of IM7/8552 for dynamic testing on a split-Hopkinson tension bar system. Data reduction was based on the area method . The obtained strain-energy release rate for testing under high-rate conditions was determined to View the MathML sourceGIc,dynf+=82.0±20.8kJ/m2, exhibiting a salient drop compared to its counterpart obtained under quasi-static loading (View the MathML sourceGIc,QSf+=195.8±18.0kJ/m2). Analysis of the strain field surrounding the crack tip using digital image correlation (DIC) suggested a more extensive damage zone for testing under quasi-static than for high-rate loading. A fractographic analysis of the specimens did not indicate any pronounced difference in terms of fracture surface morphology across the two loading rate regimes.en_UK
dc.identifier.citationHoffmann J, Cui H, Petrinic N, Determination of the strain-energy release rate of a composite laminate under high-rate tensile deformation in fibre direction, Composites Science and Technology, Volume 164, August 2018, pp. 110-119en_UK
dc.identifier.issn0266-3538
dc.identifier.urihttp://dx.doi.org/10.1016/j.compscitech.2018.05.034
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/13219
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subject(A) Polymer-matrix composites (PMCs)en_UK
dc.subject(B) Fracture toughnessen_UK
dc.subject(D) Fractographyen_UK
dc.subject(D) Scanning electron microscopy (SEM)en_UK
dc.subjectFibre failureen_UK
dc.titleDetermination of the strain-energy release rate of a composite laminate under high-rate tensile deformation in fibre directionen_UK
dc.typeArticleen_UK

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