Blast resilience of composite sandwich panels with hybrid glass-fibre and carbon-fibre skins

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Title: Blast resilience of composite sandwich panels with hybrid glass-fibre and carbon-fibre skins
Authors: Rolfe, E
Quinn, R
Sancho, A
Kaboglu, C
Johnson, A
Liu, H
Hooper, PA
Dear, JP
Arora, H
Item Type: Journal Article
Abstract: The development of composite materials through hybridisation is receiving a lot of interest; due to the multiple benefits, this may bring to many industries. These benefits include decreased brittle behaviour, which is an inherent weakness for composite materials, and the enhancement of mechanical properties due to the hybrid effect, such as tensile and flexural strength. The effect of implementing hybrid composites as skins on composite sandwich panels is not well understood under high strain rate loading, including blast loading. This paper investigates the blast resilience of two types of hybrid composite sandwich panel against a full-scale explosive charge. Two hybrid composite sandwich panels were mounted at a 15 m stand-off distance from a 100 kg nitromethane charge. The samples were designed to reveal whether the fabric layup order of the skins influences blast response. Deflection of the sandwich panels was recorded using high-speed 3D digital image correlation (DIC) during the blast. It was concluded that the combination of glass-fibre reinforced polymer (GFRP) and carbon-fibre reinforced polymer (CFRP) layers in hybrid laminate skins of sandwich panels decreases the normalised deflection compared to both GFRP and CFRP panels by up to 41 and 23%, respectively. The position of the glass-fibre and carbon-fibre layers does not appear to affect the sandwich panel deflection and strain. A finite element model has successfully been developed to predict the elastic response of a hybrid panel under air blast loading. The difference between the maximum central displacement of the experimental data and numerical simulation was ca. 5% for the hybrid panel evaluated.
Issue Date: 1-Sep-2018
Date of Acceptance: 27-Jun-2018
ISSN: 2520-8160
Publisher: Society for Industrial and Applied Mathematics
Start Page: 197
End Page: 210
Journal / Book Title: Multiscale and Multidisciplinary Modeling, Experiments and Design
Volume: 1
Issue: 3
Copyright Statement: © The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (, which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Sponsor/Funder: Office Of Naval Research Global
Funder's Grant Number: N00014-12-1-0403
Publication Status: Published
Online Publication Date: 2018-07-18
Appears in Collections:Faculty of Engineering
Mechanical Engineering

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