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

Ladani, R, Bhasin, M, Wu, S, Ravindran, A, Ghorbani, K, Zhang, J, Kinloch, A, Mouritz, A and Wang, C 2018, 'Fracture and fatigue behaviour of epoxy nanocomposites containing 1-D and 2-D nanoscale carbon fillers', Engineering Fracture Mechanics, vol. 203, pp. 102-114.


Document type: Journal Article
Collection: Journal Articles

Title Fracture and fatigue behaviour of epoxy nanocomposites containing 1-D and 2-D nanoscale carbon fillers
Author(s) Ladani, R
Bhasin, M
Wu, S
Ravindran, A
Ghorbani, K
Zhang, J
Kinloch, A
Mouritz, A
Wang, C
Year 2018
Journal name Engineering Fracture Mechanics
Volume number 203
Start page 102
End page 114
Total pages 13
Publisher Pergamon Press
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, G Ic , 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.
Subject Aerospace Materials
Aerospace Structures
Aerospace Engineering not elsewhere classified
Keyword(s) Epoxies
Fatigue behaviour
Fracture energy
Modelling
Nanocomposites
DOI - identifier 10.1016/j.engfracmech.2018.04.033
Copyright notice © 2018 Elsevier Ltd. All rights reserved.
ISSN 0013-7944
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