Enhanced fracture toughness of hierarchical carbon nanotube reinforced carbon fibre epoxy composites with engineered matrix microstructure

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Title: Enhanced fracture toughness of hierarchical carbon nanotube reinforced carbon fibre epoxy composites with engineered matrix microstructure
Authors: Zainol Abidin, MS
Herceg, T
Greenhalgh, ES
Shaffer, M
Bismarck, A
Item Type: Journal Article
Abstract: Fibre reinforced hierarchical composites further reinforced with up to 25 wt.% of carbon nanotubes (CNTs) were manufactured using a wet powder impregnation route. Microstructural heterogeneity in the matrix of these laminates was engineered during wet powder impregnation to produce CNTs rich regions with spatial separation. The Mode I fracture toughness of these heterogeneous hierarchical composites increased by 41% and 26% compared to that of baseline carbon fibre epoxy composites and hierarchical composites with homogeneously distributed CNTs throughout the matrix with similar CNT content, respectively. Increased crack path tortuosity was observed to contribute to this increase in fracture toughness. The interlaminar shear strength was unaffected by the matrix microstructural heterogeneity.
Issue Date: 20-Jan-2019
Date of Acceptance: 6-Nov-2018
URI: http://hdl.handle.net/10044/1/64349
DOI: https://dx.doi.org/10.1016/j.compscitech.2018.11.017
ISSN: 0266-3538
Publisher: Elsevier BV
Start Page: 85
End Page: 92
Journal / Book Title: Composites Science and Technology
Volume: 170
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: QinetiQ Limited
Defence Science and Technology Laboratory (DSTL)
Funder's Grant Number: AT/FRN/12750/IMP/08
DSTLX-100006041
Keywords: 09 Engineering
Materials
Publication Status: Published
Embargo Date: 2019-11-12
Online Publication Date: 2018-11-12
Appears in Collections:Faculty of Engineering
Chemistry
Aeronautics
Faculty of Natural Sciences



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