Compressive strength after blast of sandwich composite materials

Arora, Hari; Kelly, M.; Worley, A.; Linz, P. Del; Fergusson, A.; Hooper, P. A.; Dear, J. P.

doi:10.1098/rsta.2013.0212

Journal article 1218 views 107 downloads

Compressive strength after blast of sandwich composite materials

Hari Arora

, M. Kelly, A. Worley, P. Del Linz, A. Fergusson, P. A. Hooper, J. P. Dear

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Volume: 372, Issue: 2015, Pages: 20130212 - 20130212

Swansea University Author: Hari Arora

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DOI (Published version): 10.1098/rsta.2013.0212

Abstract

Composite sandwich materials have yet to be widely adopted in the construction of naval vessels despite their excellent strength-to-weight ratio and low radar return. One barrier to their wider use is our limited understanding of their performance when subjected to air blast. This paper focuses on t...

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Published in:	Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
ISSN:	1364-503X 1471-2962
Published:	The Royal Society 2014
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa37201

first_indexed	2017-11-28T20:13:07Z
last_indexed	2023-02-09T03:45:57Z
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spelling	2023-02-08T16:46:58.2237711 v2 37201 2017-11-28 Compressive strength after blast of sandwich composite materials ed7371c768e9746008a6807f9f7a1555 0000-0002-9790-0907 Hari Arora Hari Arora true false 2017-11-28 EAAS Composite sandwich materials have yet to be widely adopted in the construction of naval vessels despite their excellent strength-to-weight ratio and low radar return. One barrier to their wider use is our limited understanding of their performance when subjected to air blast. This paper focuses on this problem and specifically the strength remaining after damage caused during an explosion. Carbon-fibre-reinforced polymer (CFRP) composite skins on a styrene–acrylonitrile (SAN) polymer closed-cell foam core are the primary composite system evaluated. Glass-fibre-reinforced polymer (GFRP) composite skins were also included for comparison in a comparable sandwich configuration. Full-scale blast experiments were conducted, where 1.6×1.3 m sized panels were subjected to blast of a Hopkinson–Cranz scaled distance of 3.02 m kg−1/3, 100 kg TNT equivalent at a stand-off distance of 14 m. This explosive blast represents a surface blast threat, where the shockwave propagates in air towards the naval vessel. Hopkinson was the first to investigate the characteristics of this explosive air-blast pulse (Hopkinson 1948 Proc. R. Soc. Lond. A 89, 411–413 (doi:10.1098/rspa.1914.0008)). Further analysis is provided on the performance of the CFRP sandwich panel relative to the GFRP sandwich panel when subjected to blast loading through use of high-speed speckle strain mapping. After the blast events, the residual compressive load-bearing capacity is investigated experimentally, using appropriate loading conditions that an in-service vessel may have to sustain. Residual strength testing is well established for post-impact ballistic assessment, but there has been less research performed on the residual strength of sandwich composites after blast. Journal Article Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372 2015 20130212 20130212 The Royal Society 1364-503X 1471-2962 blast, composites, sandwich materials, compression after impact 13 5 2014 2014-05-13 10.1098/rsta.2013.0212 http://dx.doi.org/10.1098/rsta.2013.0212 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2023-02-08T16:46:58.2237711 2017-11-28T14:22:52.8465407 Faculty of Science and Engineering School of Engineering and Applied Sciences - Biomedical Engineering Hari Arora 0000-0002-9790-0907 1 M. Kelly 2 A. Worley 3 P. Del Linz 4 A. Fergusson 5 P. A. Hooper 6 J. P. Dear 7 37201__7233__5a3cbad5ecc640fca2130ebe71895e05.pdf arora2014.pdf 2017-11-28T14:25:20.9130000 Output 3211728 application/pdf Version of Record true 2017-11-28T00:00:00.0000000 false eng
title	Compressive strength after blast of sandwich composite materials
spellingShingle	Compressive strength after blast of sandwich composite materials Hari Arora
title_short	Compressive strength after blast of sandwich composite materials
title_full	Compressive strength after blast of sandwich composite materials
title_fullStr	Compressive strength after blast of sandwich composite materials
title_full_unstemmed	Compressive strength after blast of sandwich composite materials
title_sort	Compressive strength after blast of sandwich composite materials
author_id_str_mv	ed7371c768e9746008a6807f9f7a1555
author_id_fullname_str_mv	ed7371c768e9746008a6807f9f7a1555_***_Hari Arora
author	Hari Arora
author2	Hari Arora M. Kelly A. Worley P. Del Linz A. Fergusson P. A. Hooper J. P. Dear
format	Journal article
container_title	Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
container_volume	372
container_issue	2015
container_start_page	20130212
publishDate	2014
institution	Swansea University
issn	1364-503X 1471-2962
doi_str_mv	10.1098/rsta.2013.0212
publisher	The Royal Society
college_str	Faculty of Science and Engineering
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hierarchy_top_id	facultyofscienceandengineering
hierarchy_top_title	Faculty of Science and Engineering
hierarchy_parent_id	facultyofscienceandengineering
hierarchy_parent_title	Faculty of Science and Engineering
department_str	School of Engineering and Applied Sciences - Biomedical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Biomedical Engineering
url	http://dx.doi.org/10.1098/rsta.2013.0212
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description	Composite sandwich materials have yet to be widely adopted in the construction of naval vessels despite their excellent strength-to-weight ratio and low radar return. One barrier to their wider use is our limited understanding of their performance when subjected to air blast. This paper focuses on this problem and specifically the strength remaining after damage caused during an explosion. Carbon-fibre-reinforced polymer (CFRP) composite skins on a styrene–acrylonitrile (SAN) polymer closed-cell foam core are the primary composite system evaluated. Glass-fibre-reinforced polymer (GFRP) composite skins were also included for comparison in a comparable sandwich configuration. Full-scale blast experiments were conducted, where 1.6×1.3 m sized panels were subjected to blast of a Hopkinson–Cranz scaled distance of 3.02 m kg−1/3, 100 kg TNT equivalent at a stand-off distance of 14 m. This explosive blast represents a surface blast threat, where the shockwave propagates in air towards the naval vessel. Hopkinson was the first to investigate the characteristics of this explosive air-blast pulse (Hopkinson 1948 Proc. R. Soc. Lond. A 89, 411–413 (doi:10.1098/rspa.1914.0008)). Further analysis is provided on the performance of the CFRP sandwich panel relative to the GFRP sandwich panel when subjected to blast loading through use of high-speed speckle strain mapping. After the blast events, the residual compressive load-bearing capacity is investigated experimentally, using appropriate loading conditions that an in-service vessel may have to sustain. Residual strength testing is well established for post-impact ballistic assessment, but there has been less research performed on the residual strength of sandwich composites after blast.
published_date	2014-05-13T13:21:00Z
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score	11.047935

Compressive strength after blast of sandwich composite materials

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