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Energy Absorption Mechanisms in Layer-to-Layer 3D Woven Composites

Neale, Geoffrey and Dahale, Monali and Yoo, Sanghyun and Toso, Nathalie and Kelly, John and McGarrigle, Cormac and Archer, Edward and McIlhagger, Alistair and Harkin-Jones, Eileen (2019) Energy Absorption Mechanisms in Layer-to-Layer 3D Woven Composites. Engineers Australia. The 22nd International Conference on Composite Materials, 11-16 August 2019, Melbourne, Australia. ISBN 9781925627220.

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Official URL: https://search.informit.com.au/documentSummary;dn=908568015872015;res=IELENG


3D woven composites provide improved out-of-plane performance over their two-dimensional counterparts. This sort of reinforced through thickness behaviour is desirable in crashworthiness applications where energy absorption can be increased by the composite material's resistance to delamination. The behaviour of these 3D materials in not well understood and fundamental data that can be used to validate and improve material models is not yet sufficiently comprehensive. Here we demonstrate that a modified layer-to-layer type 3D woven architecture can be effectively used in energy absorbing elements to produce repeatable and predictable progressive failure under axial crush conditions. Specific energy absorption (SEA) values in glass and carbon coupons of up to 62J/g and 95J/g respectively are achieved in the quasi-static regime; values up 93J/g to were achieved in the dynamic regime when carbon coupons are tested. Carbon specimens displayed uncharacteristic mixed mode failure with elements of ductile and brittle failure. The addition of a toughening agent showed mixed results in this study, providing quasi-static improvements (+8%) in SEA but significant diminishment in dynamic SEA (-22%). The failure modes present in all cases are explored in depth and the suitability of this material for industry crash applications is investigated.

Item URL in elib:https://elib.dlr.de/139138/
Document Type:Conference or Workshop Item (Speech)
Title:Energy Absorption Mechanisms in Layer-to-Layer 3D Woven Composites
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Neale, GeoffreyUlster UniversityUNSPECIFIED
Dahale, MonaliUlster UniversityUNSPECIFIED
Yoo, SanghyunUNSPECIFIEDhttps://orcid.org/0000-0001-6924-1716
Toso, NathalieUNSPECIFIEDhttps://orcid.org/0000-0003-2803-1450
Kelly, JohnUlster UniversityUNSPECIFIED
McGarrigle, CormacUlster UniversityUNSPECIFIED
Archer, EdwardUlster UniversityUNSPECIFIED
McIlhagger, AlistairUlster UniversityUNSPECIFIED
Harkin-Jones, EileenUlster UniversityUNSPECIFIED
Date:August 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 3176-3185
EditorsEmailEditor's ORCID iD
Publisher:Engineers Australia
Keywords:energy absorption; 3D composites; crashworthiness; layer-to-layer; pick density;
Event Title:The 22nd International Conference on Composite Materials
Event Location:Melbourne, Australia
Event Type:international Conference
Event Dates:11-16 August 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials (old)
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design
Deposited By: Yoo, Sanghyun
Deposited On:08 Dec 2020 14:59
Last Modified:20 Jun 2021 15:54

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