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Dynamic response of full-scale sandwich composite structures subject to air-blast loading / H. Arora; P.A. Hooper; J.P. Dear; Hari Arora

Composites Part A: Applied Science and Manufacturing, Volume: 42, Issue: 11, Pages: 1651 - 1662

Swansea University Author: Hari, Arora

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Abstract

Glass-fibre reinforced polymer (GFRP) sandwich structures (1.6 m × 1.3 m) were subject to 30 kg charges of C4 explosive at stand-off distances 8–14 m. Experiments provide detailed data for sandwich panel response, which are often used in civil and military structures, where air-blast loading represe...

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Published in: Composites Part A: Applied Science and Manufacturing
ISSN: 1359-835X
Published: 2011
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URI: https://cronfa.swan.ac.uk/Record/cronfa37204
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Abstract: Glass-fibre reinforced polymer (GFRP) sandwich structures (1.6 m × 1.3 m) were subject to 30 kg charges of C4 explosive at stand-off distances 8–14 m. Experiments provide detailed data for sandwich panel response, which are often used in civil and military structures, where air-blast loading represents a serious threat. High-speed photography, with digital image correlation (DIC), was employed to monitor the deformation of these structures during the blasts. Failure mechanisms were revealed in the DIC data, confirmed in post-test sectioning. The experimental data provides for the development of analytical and computational models. Moreover, it underlines the importance of support boundary conditions with regards to blast mitigation. These findings were analysed further in finite element simulations, where boundary stiffness was, as expected, shown to strongly influence the panel deformation. In-depth parametric studies are ongoing to establish the hierarchy of the various factors that influence the blast response of sandwich composite structures.
Keywords: Layered structures, Polymer-matrix composites (PMCs), Impact behaviour, Finite element analysis (FEA)
College: College of Engineering
Issue: 11
Start Page: 1651
End Page: 1662