Electrical impedance spectroscopy for measuring the impedance response of carbon-fiber-reinforced polymer composite laminates

Khaled H. Almuhammadi, Tushar Kanti Bera, Gilles Lubineau

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Techniques that monitor the change in the electrical properties of materials are promising for both non-destructive testing and structural health monitoring of carbon-fiber-reinforced polymers (CFRPs). However, achieving reliable monitoring using these techniques requires an in-depth understanding of the impedance response of these materials when subjected to an alternating electrical excitation, information that is only partially available in the literature. In this work, we investigate the electrical impedance spectroscopy response at various frequencies of laminates chosen to be representative of classical layups employed in composite structures. We clarify the relationship between the frequency of the electrical current, the conductivity of the surface ply and the probing depth for different CFRP configurations for more efficient electrical signal-based inspections. We also investigate the effect of the amplitude of the input signal.
Original languageEnglish (US)
Pages (from-to)510-521
Number of pages12
JournalComposite Structures
Volume168
DOIs
StatePublished - Feb 16 2017

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