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A new micromechanical model of CNT-metal nanocomposites with random clustered distribution of CNTs

Chongyang Gao*, Yu Lu, Y.T. Zhu

*Corresponding author for this work

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

22 Downloads (CityUHK Scholars)

Abstract

Uniform dispersion of carbon nanotubes (CNTs) is a key issue for utilization of their reinforcement potential in CNT-reinforced metal matrix nanocomposites (MMNCs). It was reported that CNT clusters often exist in MMNCs prepared by various techniques, which reduces the load transfer efficiency between the matrix and reinforcement. In this paper, a new micromechanical constitutive model of CNT-reinforced MMNCs is developed, which takes into account of the influences of CNT clusters and misorientations. The strength values of a CNT/Al nanocomposite predicted by the new model are compared first with experimental data for validation. Then, the developed model is applied to predict the size effect, temperature effect and strain rate effect of the nanocomposite in its overall elastoplastic response.
Original languageEnglish
Pages (from-to)471-484
JournalFrattura ed Integrita Strutturale
Volume9
Issue number33
Online published19 Jun 2015
DOIs
Publication statusPublished - Jul 2015
Externally publishedYes

Research Keywords

  • Carbon nanotubes
  • Cluster effect
  • Metal matrix nanocomposites
  • Micromechanical modelling
  • Misorientation angle

Publisher's Copyright Statement

  • This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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