Effect of the interfacial nanostructure on the interlaminar fracture toughness and damage mechanisms of directly bonded carbon fiber reinforced thermoplastics and aluminum

Hiroki Ota, Kristine Munk Jespersen, Kei Saito, Keita Wada, Kazuki Okamoto, Atsushi Hosoi*, Hiroyuki Kawada

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Carbon fiber reinforced thermoplastics (CFRTPs) are becoming of interest to mass production industries. In this study, we investigated the characteristics of the direct bonding technique to join an aluminum alloy and a CFRTP laminate by fabricating a nanostructure on the aluminum alloy surface. The effect of the nanostructure on the fracture toughness and the damage mechanisms were investigated. The nanostructure improved the fracture toughness by about 2.6 times compared with that without the nanostructure. From observations of the fracture surface, ductile failure of the matrix owing to the nanostructure occurred, suggesting that plastic deformation improved the fracture toughness. From X-ray computed tomography observations, intralaminar failure caused by the nanostructure occurred, which appeared to be a factor for the improved fracture toughness.

Original languageEnglish
Article number106101
JournalComposites Part A: Applied Science and Manufacturing
Volume139
DOIs
Publication statusPublished - 2020 Dec

Keywords

  • A. Nano-structures
  • A. Polymer-matrix composites (PMCs)
  • B. Fracture toughness
  • E. Joints/joining

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

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