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Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment

E. Rolfe, R. Quinn, G. Irven Orcid Logo, D. Brick, Richard Johnston Orcid Logo, J.P. Dear, Hari Arora Orcid Logo

Thin-Walled Structures, Volume: 188, Start page: 110874

Swansea University Authors: Richard Johnston Orcid Logo, Hari Arora Orcid Logo

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DOI (Published version): 10.1016/j.tws.2023.110874

Abstract

This research investigates the performance of interlaminar hybrid composites as the skins of composite sandwich panels under blast loading with the aim of promoting delamination between dissimilar plies for energy absorption. The deformation of the composite panels was captured using high-speed digi...

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Published in: Thin-Walled Structures
ISSN: 0263-8231
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa63459
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The deformation of the composite panels was captured using high-speed digital image correlation (DIC). High-speed full-field DIC enables failure to be captured at the moment it occurs across the entire panel. X-ray micro-CT imaging was used to assess the post-blast damage sustained by particular areas of interest from each panel, which were selected based on DIC results. The combination of full-field DIC and detailed X-ray micro-CT scanning enabled a unique comparison of both the global and localised blast resilience of hybrid and conventional composite sandwich panels to be performed. Following a single blast load, the extent of damage to the Hybrid-3B skinned sandwich panel was found to lie between that of GFRP and CFRP skinned sandwich panels. X-ray micro-CT scanning of these panels reveals that there is no continuous damage path through the skin thickness of Hybrid-3B, whereas the GFRP and CFRP panels sustain damage in every ply. Following repeat blast loading, the Hybrid-4 skinned sandwich panel suffered from a front skin crack spanning the length of the panel. Post-blast compressive strength testing reveals that this skin crack and resulting core crack acted as a stress relief, limiting the damage sustained elsewhere in the panel. It was concluded that Hybrid-3B results in a good trade-off between strength and stiffness and is advantageous over conventional CFRP and GFRP panels under a single blast load. Under repeated loading Hybrid-4 offers advantages over Hybrid-3B. 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spelling v2 63459 2023-05-16 Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment 23282e7acce87dd926b8a62ae410a393 0000-0003-1977-6418 Richard Johnston Richard Johnston true false ed7371c768e9746008a6807f9f7a1555 0000-0002-9790-0907 Hari Arora Hari Arora true false 2023-05-16 MTLS This research investigates the performance of interlaminar hybrid composites as the skins of composite sandwich panels under blast loading with the aim of promoting delamination between dissimilar plies for energy absorption. The deformation of the composite panels was captured using high-speed digital image correlation (DIC). High-speed full-field DIC enables failure to be captured at the moment it occurs across the entire panel. X-ray micro-CT imaging was used to assess the post-blast damage sustained by particular areas of interest from each panel, which were selected based on DIC results. The combination of full-field DIC and detailed X-ray micro-CT scanning enabled a unique comparison of both the global and localised blast resilience of hybrid and conventional composite sandwich panels to be performed. Following a single blast load, the extent of damage to the Hybrid-3B skinned sandwich panel was found to lie between that of GFRP and CFRP skinned sandwich panels. X-ray micro-CT scanning of these panels reveals that there is no continuous damage path through the skin thickness of Hybrid-3B, whereas the GFRP and CFRP panels sustain damage in every ply. Following repeat blast loading, the Hybrid-4 skinned sandwich panel suffered from a front skin crack spanning the length of the panel. Post-blast compressive strength testing reveals that this skin crack and resulting core crack acted as a stress relief, limiting the damage sustained elsewhere in the panel. It was concluded that Hybrid-3B results in a good trade-off between strength and stiffness and is advantageous over conventional CFRP and GFRP panels under a single blast load. Under repeated loading Hybrid-4 offers advantages over Hybrid-3B. Finally, the design of the support structure can significantly aid in blast resilience, and, a holistic approach considering both panels and support should be taken when designing for blast resilience. Journal Article Thin-Walled Structures 188 110874 Elsevier BV 0263-8231 Air blast, Composite sandwich panel, Hybrid composite, Digital image correlation, X-ray micro-CT 1 7 2023 2023-07-01 10.1016/j.tws.2023.110874 http://dx.doi.org/10.1016/j.tws.2023.110874 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University SU Library paid the OA fee (TA Institutional Deal) The authors would like to thank Dr Yapa Rajapakse of the Office of Naval Research [N62909-15-1-2004] for supporting Dr Emily Rolfe, Dr Mark Kelly and Dr Hari Arora during their PhDs and EPSRC for supporting Dr Emily Rolfe. The authors also acknowledge the support from the Sêr Cymru National Research Network Industrial Collaboration Award, which supported instrumentation costs to the project. The damage analysis work was funded by UK EPSRC, through the Impact Acceleration Account 2020-2022, administered by Swansea University. The micro-CT work was supported by the Advanced Imaging of Materials (AIM) core facility [EPSRC Grant No. EP/M028267/1], the Welsh Government Enhancing Competitiveness Grant [MA/KW/5554/19] and the European Social Fund (ESF) through the European Union’s Convergence programme administered by the Welsh Government. The RWIF Collaboration Booster R3-EEF37 supported discussions on composite materials. 2023-08-18T13:53:26.9435696 2023-05-16T09:34:29.5169157 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering E. Rolfe 1 R. Quinn 2 G. Irven 0000-0001-5667-1987 3 D. Brick 4 Richard Johnston 0000-0003-1977-6418 5 J.P. Dear 6 Hari Arora 0000-0002-9790-0907 7 63459__27949__9c5991e89f5740338feda0fdedf3ba01.pdf 63459.VOR.pdf 2023-06-23T12:06:01.6356975 Output 7587589 application/pdf Version of Record true © 2023 The Authors. Published by Elsevier Ltd. Distributed under the terms of a Creative Commons Attribution 4.0 License (CC BY 4.0). true eng https://creativecommons.org/licenses/by/4.0/
title Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment
spellingShingle Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment
Richard Johnston
Hari Arora
title_short Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment
title_full Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment
title_fullStr Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment
title_full_unstemmed Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment
title_sort Experimental investigation of the air blast performance of hybrid composite skinned sandwich panels with X-ray micro-CT damage assessment
author_id_str_mv 23282e7acce87dd926b8a62ae410a393
ed7371c768e9746008a6807f9f7a1555
author_id_fullname_str_mv 23282e7acce87dd926b8a62ae410a393_***_Richard Johnston
ed7371c768e9746008a6807f9f7a1555_***_Hari Arora
author Richard Johnston
Hari Arora
author2 E. Rolfe
R. Quinn
G. Irven
D. Brick
Richard Johnston
J.P. Dear
Hari Arora
format Journal article
container_title Thin-Walled Structures
container_volume 188
container_start_page 110874
publishDate 2023
institution Swansea University
issn 0263-8231
doi_str_mv 10.1016/j.tws.2023.110874
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
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 - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
url http://dx.doi.org/10.1016/j.tws.2023.110874
document_store_str 1
active_str 0
description This research investigates the performance of interlaminar hybrid composites as the skins of composite sandwich panels under blast loading with the aim of promoting delamination between dissimilar plies for energy absorption. The deformation of the composite panels was captured using high-speed digital image correlation (DIC). High-speed full-field DIC enables failure to be captured at the moment it occurs across the entire panel. X-ray micro-CT imaging was used to assess the post-blast damage sustained by particular areas of interest from each panel, which were selected based on DIC results. The combination of full-field DIC and detailed X-ray micro-CT scanning enabled a unique comparison of both the global and localised blast resilience of hybrid and conventional composite sandwich panels to be performed. Following a single blast load, the extent of damage to the Hybrid-3B skinned sandwich panel was found to lie between that of GFRP and CFRP skinned sandwich panels. X-ray micro-CT scanning of these panels reveals that there is no continuous damage path through the skin thickness of Hybrid-3B, whereas the GFRP and CFRP panels sustain damage in every ply. Following repeat blast loading, the Hybrid-4 skinned sandwich panel suffered from a front skin crack spanning the length of the panel. Post-blast compressive strength testing reveals that this skin crack and resulting core crack acted as a stress relief, limiting the damage sustained elsewhere in the panel. It was concluded that Hybrid-3B results in a good trade-off between strength and stiffness and is advantageous over conventional CFRP and GFRP panels under a single blast load. Under repeated loading Hybrid-4 offers advantages over Hybrid-3B. Finally, the design of the support structure can significantly aid in blast resilience, and, a holistic approach considering both panels and support should be taken when designing for blast resilience.
published_date 2023-07-01T13:53:28Z
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score 11.017797

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