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An exploration of the ballistic resistance of multilayer graphene polymer composites

O'Masta, MR and Russell, BP and Deshpande, VS (2017) An exploration of the ballistic resistance of multilayer graphene polymer composites. Extreme Mechanics Letters, 11. pp. 49-58.

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Abstract

© 2016 Elsevier Ltd The response of multilayer graphene/polyvinyl alcohol (MLG/PVA) films were studied under quasi-static (Q.S.) and dynamic edge-clamped transverse loading. The 10 μm thick films, reinforced by ∼35 vol.% MLG and measuring 85 mm square were fabricated by liquid exfoliation of the graphene followed by filtration of the MLG/PVA dispersion. The responses of the MLG/PVA films were compared with those of equal areal mass films of pure PVA and aluminum. The moderately conductive (∼10 −2 S cm −1 ) MLG/PVA films had a Young's modulus approximately twice that of PVA and a low strain rate (10 −3 s −1 ) peak strength that was about 50% higher. Moreover, while the MLG/PVA films had a tensile strength lower than the Al films, they had a higher load carrying capacity compared to the Al films and were stiffer than the PVA films under Q.S. transverse loading. The ballistic limit of the MLG/PVA films was ∼50% higher than the Al films but the higher ductility of the parent PVA resulted in the pure PVA films having a higher ballistic resistance. The ballistic resistance of the MLG/PVA is well predicted by a membrane stretching analysis and this enables us to present an outlook on the ballistic resistance potential of graphene/PVA composites comprising aligned large flakes.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:19
Last Modified: 10 Aug 2017 01:39
DOI: