Fracture and fatigue behaviour of epoxy nanocomposites containing 1-D and 2-D nanoscale carbon fillers

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Title: Fracture and fatigue behaviour of epoxy nanocomposites containing 1-D and 2-D nanoscale carbon fillers
Authors: Ladani, R
Bhasin, M
Wu, S
Ravindran, AR
Ghorbani, K
Kinloch, AJ
Mouritz, AP
Wang, CH
Item Type: Journal Article
Abstract: The present paper describes improvements in the fracture resistance of epoxy polymers due to the addition of either (a) one-dimensional (1-D) carbon nanofibres (CNFs), or (b) two-dimensional (2-D) graphene nanoplatelets (GNPs), or (c) hybrid combinations of these carbon nanofillers (i.e. using both CNFs and GNPs). The effects of the dimensional shape and concentration (i.e. 0.0, 0.5, 1.0, 1.5 and 2.0 wt%) of the nanoscale carbon fillers are considered. The addition of CNFs, GNPs or hybrid combinations of CNFs and GNPs increases greatly the quasi-static fracture energy, GIc, of the epoxy due to these nanofillers inducing multiple intrinsic (e.g. interfacial debonding and void growth) and extrinsic (e.g. pull-out and bridging) toughening mechanisms. A mechanistic model is presented to quantify the contributions from the different toughening mechanisms induced by the CNF and the GNP fillers which result in the improvements observed in the fracture energy. The resistance of the epoxy, modified with either the GNPs or the CNFs, to cyclic-fatigue loading is also increased by the presence of the carbon nanofillers.
Issue Date: 1-Nov-2018
Date of Acceptance: 23-Apr-2018
URI: http://hdl.handle.net/10044/1/59265
DOI: https://dx.doi.org/10.1016/j.engfracmech.2018.04.033
ISSN: 0013-7944
Publisher: Elsevier
Start Page: 102
End Page: 114
Journal / Book Title: Engineering Fracture Mechanics
Volume: 203
Copyright Statement: © 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: Science & Technology
Technology
Mechanics
Epoxies
Fatigue behaviour
Fracture energy
Modelling
Nanocomposites
MECHANICAL-PROPERTIES
MULTIFUNCTIONAL PROPERTIES
ELECTRICAL-CONDUCTIVITY
GRAPHENE NANOCOMPOSITES
TOUGHENING MECHANISMS
DELAMINATION GROWTH
CRACK-PROPAGATION
FIBER COMPOSITES
II FRACTURE
NANOFIBERS
MD Multidisciplinary
Mechanical Engineering & Transports
Publication Status: Published
Online Publication Date: 2018-04-26
Appears in Collections:Faculty of Engineering
Mechanical Engineering



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