Experimental and numerical investigation into the effect of carbon nanotube buckling on the reinforcement of CNT/Cu composites

Ping Chi Tsai, Yeau Ren Jeng

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

Carbon nanotube reinforced copper matrix (CNT/Cu) composites with high strength and good damping have been developed using acid treatment, sintering processes and consolidation techniques. Strengthening of the composites as a result of nanotube buckling has been demonstrated by experimental nanoindentation tests and molecular dynamics (MD) simulations. The experimental results show that the buckling behavior of additional CNTs in the CNT/Cu composites varies with the slenderness ratio of CNTs. Specifically, this study shows that the significant buckling behavior of CNTs in the CNT/Cu composites where the shorter CNTs (with a smaller slenderness ratio) give rise to a global buckling and the slender CNTs (with a larger slenderness ratio) induce local buckling. The MD simulation results reveal that the buckling behavior of the CNTs plays a key role in increasing the mechanical strength of CNT/Cu composites by acting as a " buffer" in releasing excess strain in the Cu matrix.

Original languageEnglish
Pages (from-to)28-34
Number of pages7
JournalComposites Science and Technology
Volume79
DOIs
Publication statusPublished - 2013 Apr 8

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Engineering(all)

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