Effect of graphene layer thickness on effective modulus of 3D CNT/Graphene nanostructures

J. Joseph, Y. C. Lu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Three-dimensional CNT/Graphene nanostructure is consisted of vertically aligned carbon nanotube pillars grown directly on parallel graphene layers. The effect of graphene layer thickness on mechanical properties of the 3D nanostructure is analyzed. Overall, when the graphene layers experience the out-of-plane loading, the effective properties (Young's modulus, shear modulus, and major Poisson's ratio) of the 3D CNT/Graphene structure are significantly dependent upon the thickness of graphene layers. When the graphene layers experience the in-plane loading, the effective properties of the 3D CNT/Graphene structure depend upon the graphene thickness initially and then remain relatively unchanged as the thickness increases. It is found that the optimal performance of the 3D CNT/Graphene structure requires a minimum of thickness for the graphene layers, g/t > 5.

Original languageEnglish
Article number1550010
JournalInternational Journal of Computational Materials Science and Engineering
Volume4
Issue number2
DOIs
StatePublished - Jun 1 2015

Bibliographical note

Funding Information:
This work has been supported by the Kentucky NASA EPSCoR RIA program and the Kentucky Science and Engineering Foundation (KSEF) RDE program.

Publisher Copyright:
© 2015 Imperial College Press.

Keywords

  • 3D CNT/graphene nanostructure
  • carbon nanotubes
  • effective modulus
  • finite element method
  • graphene thickness

ASJC Scopus subject areas

  • Numerical Analysis
  • Modeling and Simulation
  • Materials Science (all)
  • Mechanics of Materials
  • Computer Science Applications

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