Vibration damping characteristics of carbon fiber-reinforced composites containing carbon nanotubes

Shafi Ullah Khan, Chi Yin Li, Naveed A. Siddqui, Jang Kyo Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Vibration damping characteristics of nanocomposites and carbon fiber reinforced polymer composites (CFRPs) containing multiwall carbon nanotubes (CNTs) have been investigated by performing the free and forced vibration tests. Several vibration parameters are varied to characterize the damping behavior at different amplitudes, natural frequencies and vibration modes. The results consistently indicate that the incorporation of CNTs into neat epoxy and CFRP-epoxy composites has a beneficial effect of enhancing the damping ratio of the materials, the degree of enhancement depending on the initial stiffness of the material, type of vibration and damping mode. A typical 50% increase in damping ratio is obtained for the CFRP composites with 1.0wt% CNTs for a beam with initial free vibration amplitude of 40mm. The DMA results further confirm the above findings, showing largely improved loss modulus and tan delta of the materials due to CNT reinforcement.

Original languageBritish English
Title of host publication7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
Pages422-425
Number of pages4
StatePublished - 2010
Event7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010 - Taipei, Taiwan, Province of China
Duration: 15 Nov 201018 Nov 2010

Publication series

Name7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
Volume1

Conference

Conference7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
Country/TerritoryTaiwan, Province of China
CityTaipei
Period15/11/1018/11/10

Keywords

  • Carbon fiber composite
  • Carbon nanotube
  • Energy dissipation
  • Vibration damping

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