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Conference Paper/Proceeding/Abstract 935 views

Comparative assessment of hybrid composite sandwich panels under blast loading

Emily Rolfe, Hari Arora Orcid Logo, Paul A. Hooper, John P. Dear

ECCM 2018 - 18th European Conference on Composite Materials

Swansea University Author: Hari Arora Orcid Logo

Abstract

The use of composite sandwich structures across multiple disciplines, including the naval sector, is ever increasing. A combination of high specific strength, corrosion resistance and low radar signature make composite sandwich structures an attractive material choice. However, the brittle behaviour...

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Published in: ECCM 2018 - 18th European Conference on Composite Materials
ISBN: 978-151089693-2
Published: 2020
Online Access: https://pcoconvin.eventsair.com/QuickEventWebsitePortal/eccm/program/Agenda/AgendaItemDetail?id=25bebb8d-b80f-48ae-b6ec-5e252f12ca2b
URI: https://cronfa.swan.ac.uk/Record/cronfa53334
first_indexed 2020-01-23T13:57:34Z
last_indexed 2020-07-08T13:16:33Z
id cronfa53334
recordtype SURis
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spelling 2020-07-08T12:31:29.5226085 v2 53334 2020-01-23 Comparative assessment of hybrid composite sandwich panels under blast loading ed7371c768e9746008a6807f9f7a1555 0000-0002-9790-0907 Hari Arora Hari Arora true false 2020-01-23 EAAS The use of composite sandwich structures across multiple disciplines, including the naval sector, is ever increasing. A combination of high specific strength, corrosion resistance and low radar signature make composite sandwich structures an attractive material choice. However, the brittle behaviour of the composite skins results in overdesign of composite sandwich components, counteracting their weight saving benefits. Since naval vessels must withstand a range of loads including blast loading, representative materials need to be tested under real blast conditions in order to avoid unnecessary safety factors and overdesign. The research detailed here is concerned with full-scale air blast testing of two composite sandwich panels with different glass-fibre/carbon-fibre hybrid face-sheets. The panels were subjected to a 100 kg nitromethane charge at 15 m stand-off distance. High speed 3D digital image correlation was used to record the displacement of the rear skins of the sandwich panels during the blast event. Strain gauges were adhered to the front skins of the panels to enable comparison between the front and rear skins at certain locations. Overall the two sandwich panels demonstrated similar deflection and strain. Under blast loading the presence of both types of fibres is the key factor not the position of each fibre fabric layer. Conference Paper/Proceeding/Abstract ECCM 2018 - 18th European Conference on Composite Materials 978-151089693-2 1 1 2020 2020-01-01 https://pcoconvin.eventsair.com/QuickEventWebsitePortal/eccm/program/Agenda/AgendaItemDetail?id=25bebb8d-b80f-48ae-b6ec-5e252f12ca2b Published by: Applied Mechanics Laboratory COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2020-07-08T12:31:29.5226085 2020-01-23T09:44:08.2732342 Emily Rolfe 1 Hari Arora 0000-0002-9790-0907 2 Paul A. Hooper 3 John P. Dear 4
title Comparative assessment of hybrid composite sandwich panels under blast loading
spellingShingle Comparative assessment of hybrid composite sandwich panels under blast loading
Hari Arora
title_short Comparative assessment of hybrid composite sandwich panels under blast loading
title_full Comparative assessment of hybrid composite sandwich panels under blast loading
title_fullStr Comparative assessment of hybrid composite sandwich panels under blast loading
title_full_unstemmed Comparative assessment of hybrid composite sandwich panels under blast loading
title_sort Comparative assessment of hybrid composite sandwich panels under blast loading
author_id_str_mv ed7371c768e9746008a6807f9f7a1555
author_id_fullname_str_mv ed7371c768e9746008a6807f9f7a1555_***_Hari Arora
author Hari Arora
author2 Emily Rolfe
Hari Arora
Paul A. Hooper
John P. Dear
format Conference Paper/Proceeding/Abstract
container_title ECCM 2018 - 18th European Conference on Composite Materials
publishDate 2020
institution Swansea University
isbn 978-151089693-2
url https://pcoconvin.eventsair.com/QuickEventWebsitePortal/eccm/program/Agenda/AgendaItemDetail?id=25bebb8d-b80f-48ae-b6ec-5e252f12ca2b
document_store_str 0
active_str 0
description The use of composite sandwich structures across multiple disciplines, including the naval sector, is ever increasing. A combination of high specific strength, corrosion resistance and low radar signature make composite sandwich structures an attractive material choice. However, the brittle behaviour of the composite skins results in overdesign of composite sandwich components, counteracting their weight saving benefits. Since naval vessels must withstand a range of loads including blast loading, representative materials need to be tested under real blast conditions in order to avoid unnecessary safety factors and overdesign. The research detailed here is concerned with full-scale air blast testing of two composite sandwich panels with different glass-fibre/carbon-fibre hybrid face-sheets. The panels were subjected to a 100 kg nitromethane charge at 15 m stand-off distance. High speed 3D digital image correlation was used to record the displacement of the rear skins of the sandwich panels during the blast event. Strain gauges were adhered to the front skins of the panels to enable comparison between the front and rear skins at certain locations. Overall the two sandwich panels demonstrated similar deflection and strain. Under blast loading the presence of both types of fibres is the key factor not the position of each fibre fabric layer.
published_date 2020-01-01T07:48:44Z
_version_ 1821300305781850112
score 11.047609

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