Towards meso scale impedance-based monitoring of degradation in laminated composites

Gilles Lubineau, Harilal Remesan, Khaled Almohammadi, Lakshmi Selvakumaran, Tushar Kanti Bera

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

Abstract

A practical way to track the evolution of damage in laminated composites is to monitor the change of its electrical resistance. Such measurements can be conveniently processed at the meso scale by using recently developed rigorous micro meso relations for electrical conductivity. Yet, pure resistive monitoring is limited due to small penetration without the material. Electrical impedance spectroscopy (EIS) of carbon fiber reinforced polymer (CFRP) has been conducted with ECG electrodes directly pasted on the CFRP samples without removing the resin layer. The impedance and phase angle variations obtained for a CFRP composite plate with delamination is compared to the data obtained from a sample without delamination. Results demonstrate that the impedance and phase angle profiles change for a CFRP plate with delamination from a sample without delamination. The delamination induced impedance variation in CFRP composites can be utilized for nondestructive damage evaluation.

Original languageEnglish (US)
Title of host publicationECCM 2016 - Proceeding of the 17th European Conference on Composite Materials
PublisherEuropean Conference on Composite Materials, ECCM
ISBN (Electronic)9783000533877
StatePublished - Jan 1 2016
Event17th European Conference on Composite Materials, ECCM 2016 - Munich, Germany
Duration: Jun 26 2016Jun 30 2016

Publication series

NameECCM 2016 - Proceeding of the 17th European Conference on Composite Materials

Other

Other17th European Conference on Composite Materials, ECCM 2016
CountryGermany
CityMunich
Period06/26/1606/30/16

Keywords

  • Carbon fiber reinforced polymer (CFRP)
  • Delamination
  • ECG electrode
  • Electrical impedance
  • Electrical impedance spectroscopy (EIS)
  • Phase angle
  • Structural health monitoring

ASJC Scopus subject areas

  • Ceramics and Composites

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