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Improved Energy Absorption in 3D Woven Composites by Weave Parameter Manipulation

Neale, Geoffrey and Dahale, Monali and Yoo, Sanghyun and Toso, Nathalie and McGarrigle, Cormac and Kelly, John and Archer, Edward and McIlhagger, Alistair and Harkin-Jones, Eileen (2019) Improved Energy Absorption in 3D Woven Composites by Weave Parameter Manipulation. Elsevier. 2nd CIRP Conference on Composite Material Parts Manufacturing, 0-11 October 2019, Rotherham, UK. doi: 10.1016/j.procir.2019.09.017.

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Abstract

3D woven composites show significantly improved out-of-plane properties over traditional 2D laminates. This high through-thickness reinforcement is desirable in crashworthiness applications where crushing energy can be increased by composites’ improved interlaminar toughness. However, their use in practical applications is stunted by the poor understanding of how small variations in weave parameters, whether intended or not, affect the performance of these materials. Here, we demonstrate that small changes in textile properties, in this case pick density and float length have a knock-on effect that can greatly improve or diminish the crush performance of a 3D woven layer-to-layer structural fabric. Quasi-static and dynamic energy absorption values up to approximately 95J/g and 92J/g respectively are achieved. Crush performance is investigated on omega-shaped coupons, under both quasi-static and dynamic loading conditions with crush rates between 2mm/min and 8.5m/s. The failure mechanisms present during progressive crush under quasi-static loading transitions between more expected brittle dominated failure and ductile dominated failure, which is more typical of metals under similar loading conditions. Whereas when dynamic loading is considered, the materials present a more typical splaying failure event. As a result, additional exploration of the three-point bending response of these varied architectures is presented as a means of further explaining the interplay between lamina bending and progressive folding/micro-buckling in these materials. The effect of the weave’s architectural alterations on physical composite properties such as weight, density and conformability to shape is also investigated.

Item URL in elib:https://elib.dlr.de/139137/
Document Type:Conference or Workshop Item (Speech)
Title:Improved Energy Absorption in 3D Woven Composites by Weave Parameter Manipulation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Neale, GeoffreyUlster UniversityUNSPECIFIED
Dahale, MonaliUlster UniversityUNSPECIFIED
Yoo, SanghyunSanghyun.Yoo (at) dlr.deUNSPECIFIED
Toso, NathalieNathalie.Toso (at) dlr.dehttps://orcid.org/0000-0003-2803-1450
McGarrigle, CormacUlster UniversityUNSPECIFIED
Kelly, JohnUlster UniversityUNSPECIFIED
Archer, EdwardUlster UniversityUNSPECIFIED
McIlhagger, AlistairUlster UniversityUNSPECIFIED
Harkin-Jones, EileenUlster UniversityUNSPECIFIED
Date:30 December 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:85
DOI :10.1016/j.procir.2019.09.017
Page Range:pp. 284-289
Publisher:Elsevier
Series Name:Procedia CIRP
Status:Published
Keywords:3d wovens; layer-to-layer; energy absorption; pick density; float length
Event Title:2nd CIRP Conference on Composite Material Parts Manufacturing
Event Location:Rotherham, UK
Event Type:international Conference
Event Dates:0-11 October 2019
Organizer:Advanced Manufacturing Research Centre, the University of Sheffield
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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