Bridging mechanisms of through-thickness reinforcement in dynamic mode I&II delamination

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dc.contributor.authorCui, Hao
dc.contributor.authorYasaee, Mehdi
dc.contributor.authorKalwak, Gordon
dc.contributor.authorPellegrino, Antonio
dc.contributor.authorPartridge, Ivana K.
dc.contributor.authorHallett, Stephen R.
dc.contributor.authorAllegri, Giuliano
dc.contributor.authorPetrinic, Nik
dc.date.accessioned2017-05-17T10:15:05Z
dc.date.available2017-05-17T10:15:05Z
dc.date.issued2017-04-13
dc.description.abstractZ-pin through-thickness reinforcement is used to improve the impact resistance of composite structures; however, the effect of loading rate on Z-pin behaviour is not well understood. The dynamic response of Z-pins in mode I and II delamination of quasi-isotropic IM7/8552 laminates was characterized experimentally in this work. Z-pinned samples were loaded at both quasi-static and dynamic rates, up to a separation velocity of 12 m/s. The efficiency of Z-pins in mode I delamination decreased with loading rate, which was mainly due to the change in the pin misalignment, the failure surface morphology and to inertia. The Z-pins failed at small displacements in the mode II loading experiments, resulting in much lower energy dissipation in comparison with the mode I case. The total energy dissipation decreased with increasing loading rate, while enhanced interfacial friction due to failed pins may be largely responsible for the higher energy dissipation in quasi-static experiments.en_UK
dc.identifier.citationHao Cui, Mehdi Yasaee, Gordon Kalwak, Antonio Pellegrino, Ivana K. Partridge, Stephen R. Hallett, Giuliano Allegri, Nik Petrinic, Bridging mechanisms of through-thickness reinforcement in dynamic mode I&II delamination, Composites Part A: Applied Science and Manufacturing, Volume 99, August 2017, pp198-207en_UK
dc.identifier.issn1359-835X
dc.identifier.urihttp://dx.doi.org/10.1016/j.compositesa.2017.04.009
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/11903
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.subjectZ-pinen_UK
dc.subjectMode Ien_UK
dc.subjectMode IIen_UK
dc.subjectDelaminationen_UK
dc.subjectDynamicen_UK
dc.titleBridging mechanisms of through-thickness reinforcement in dynamic mode I&II delaminationen_UK
dc.typeArticleen_UK

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