Characterization of edge delaminated active fiber composites

Dwo Wen Wang, Ching-Chung Yin*

*Corresponding author for this work

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

Abstract

The edge-delaminated AFC from the host structure are characterized through impedance measurement and the resonant properties. The edge delaminations are categorized into three groups according to their orientations, including end delamination with its front perpendicular to the active fibers, side delamination with the front parallel to the fibers, and corner delamination. Since interdigital electrodes are symmetrically aligned on the opposite surfaces of AFC, the delaminated patch extensionally vibrates along the fibers when an alternating voltage is applied on the electrodes. The resonant frequencies of extensional vibration for the delaminated AFC are in reverse proportion to the characteristic length of debond in accordance with the measured impedances and simulated spectra. The decrease of resonant frequency for end delamination is smaller than that for side delamination. The ratio of the second lowest resonant frequency to the fundamental one remains a specific constant, 1.7, for the growing isosceles corner delamination. If the ratio becomes less than 1.7, it indicates that the delaminated region expands along the fiber direction. In contrast, the delamination spreading along the other direction perpendicular to the fibers results in an increasing ratio of the lowest two resonant frequencies beyond 1.7.

Original languageEnglish
Title of host publication7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010
PublisherACCM-7 Organizing Committee
Pages596-601
Number of pages6
ISBN (Print)9781632660756
StatePublished - 1 Jan 2010
Event7th Asian-Australasian Conference on Composite Materials 2010, ACCM 2010 - Taipei, Taiwan
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
CountryTaiwan
CityTaipei
Period15/11/1018/11/10

Keywords

  • Active fiber composites
  • Delamination
  • Impedance
  • Resonance

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