Carbon fiber/carbon nanotube reinforced hierarchical composites: Effect of CNT distribution on shearing strength

H. W. Zhou, Leon Mishnaevsky, H. Y. Yi, Y. Q. Liu, X. Hu, A. Warrier, Gaoming Dai

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The strength and fracture behavior of carbon fiber reinforced polymer composites with carbon nanotube (CNT) secondary reinforcement are investigated experimentally and numerically. Short Beam Shearing tests have been carried out, with SEM observations of the damage evolution in the composites. 3D multiscale computational (FE) models of the carbon/polymer composite with varied CNT distributions have been developed and employed to study the effect of the secondary CNT reinforcement, its distribution and content on the strength and fracture behavior of the composites. It is shown that adding secondary CNT nanoreinforcement into the matrix and/or the sizing of carbon fiber/reinforced composites ensures strong increase of the composite strength. The effect of secondary CNTs reinforcement is strongest when some small addition of CNTs in the polymer matrix is complemented by the fiber sizing with high content of CNTs. (C) 2015 Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalComposites Part B: Engineering
Volume88
Pages (from-to)201-211
Number of pages11
ISSN1359-8368
DOIs
Publication statusPublished - 2016

Keywords

  • Polymer-matrix composites (PMCs)
  • Nano-structures
  • Fracture
  • Finite element analysis (FEA)
  • Mechanical testing

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