Pullout strength of graphene and carbon nanotube/epoxy composites

An atomistic multiscale modelling approach is used to simulate the nonlinear pullout behaviour of interlinked single walled carbon nano tubes (SWCNT) and single layer graphene sheets (SLGS) embedded in an epoxy polymer. The pullout forces have been computed for various configurations of nanocomposit...

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Bibliographic Details
Published in:Composites. Part B, Engineering Engineering, 2016-10, Vol.102, p.1-8
Main Authors: Chandra, Y., Scarpa, F., Adhikari, S., Zhang, J., Saavedra Flores, E.I., Peng, Hua-Xin
Format: Article
Language:English
Subjects:
Carbon nanotubes
Computer simulation
Finite element
Graphene
Graphene sheets
Interfacial strength
Mathematical models
Molecular dynamics
Nanocomposites
Nanostructure
Nonlinearity
Shear strength
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Summary:An atomistic multiscale modelling approach is used to simulate the nonlinear pullout behaviour of interlinked single walled carbon nano tubes (SWCNT) and single layer graphene sheets (SLGS) embedded in an epoxy polymer. The pullout forces have been computed for various configurations of nanocomposites (SWCNT-SWCNT, SLGS-SLGS and hybrid SLGS-SWCNT), also by evaluating the effect provided by three different interlink compounds. The interfacial strength due to fibre pullout predicted by the hybrid atomistic-FE model is compared against experimental and molecular dynamics results available in open literature. The results show the specific deformation characteristics (localised auxetics) that provide an increase of pullout forces and interfacial strength with the use of the links.
ISSN:1359-8368
1879-1069
DOI:10.1016/j.compositesb.2016.06.070