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Multi-scale Rule-of-Mixtures Model of Carbon Nanotube/Carbon Fiber/Epoxy Lamina

Published online by Cambridge University Press:  26 February 2011

Sarah-Jane Frankland ,
J. C. Riddick  and
T. S. Gates
Sarah-Jane Frankland
Affiliation:
sjvf@nianet.org, National Institute of Aerospace, 100 Exploration Way, Hampton, va, 23669, United States
J. C. Riddick
Affiliation:
j.c.riddick@larc.nasa.gov
T. S. Gates
Affiliation:
t.s.gates@larc.nasa.gov
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Abstract

A unidirectional carbon fiber/epoxy lamina in which the carbon fibers are coated with single-walled carbon nanotubes is modeled with a multi-scale method, the atomistically informed rule-of-mixtures. This multi-scale model is designed to include the effect of the carbon nanotubes on the constitutive properties of the lamina. It included concepts from the molecular dynamics/equivalent continuum methods, micromechanics, and the strength of materials. Within the model both the nanotube volume fraction and nanotube distribution were varied. It was found that for a lamina with 60% carbon fiber volume fraction, the Young’s modulus in the fiber direction varied with changes in the nanotube distribution, from 138.8 to 140 GPa with nanotube volume fractions ranging from 0.0001 to 0.0125. The presence of nanotube near the surface of the carbon fiber is therefore expected to have a small, but positive, effect on the constitutive properties of the lamina.

Keywords

nanostructurecompositesimulation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 887: Symposium Q – Degradation Processes in Nanostructured Materials , 2005 , 0887-Q01-02
Copyright
Copyright © Materials Research Society 2006

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