Influence of nanorubber toughening on the tensile deformation and tensile fatigue behaviour of a carbon fibre reinforced epoxy composite

Nazli Gulsine Ozdemir*, Tao Zhang, Homayoun Hadavinia, Ian Aspin, Fabrizio Scarpa

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

3 Citations (Scopus)
322 Downloads (Pure)

Abstract

This study investigates the effect of nanocarboxylic acrylonitrile butadiene rubber on the tensile fatigue behaviour of carbon fibre-reinforced polymer composites with dicyandiamide-cured epoxy matrix. The stress-controlled tension–tension fatigue behaviour at a stress ratio of R = 0.1 and maximum stresses between 400 MPa and 650 MPa was investigated for the case of carbon fibre-reinforced polymers with pristine and nanorubber-modified epoxy matrices with loadings of 5 phr, 10 phr, 15 phr and 20 phr. The results from the experimental tests show that the high-cycle fatigue life of the laminates with 15 phr of nanorubber-modified resin matrix was increased by a factor of two compared to the pristine matrix samples. Scanning electron microscopy images of the fracture surfaces also show an enhanced plastic deformation existing at the fibre–matrix interface and a lower extent of fibre pull-out; both contributing towards the enhancement of the fatigue performance of the carbon fibre-reinforced polymer composites.
Original languageEnglish
Pages (from-to)2633-2645
Number of pages13
JournalJournal of Composite Materials
Volume50
Issue number19
Early online date7 Oct 2015
DOIs
Publication statusPublished - 1 Aug 2016

Keywords

  • fatigue
  • nanoparticles
  • nanorubber
  • Polymer-matrix composites
  • tensile

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