High speed inspection of UD CFRP composites

Miguel A. Machado, Kim Niklas Antin, Luís S. Rosado, Pedro Vilaça, Telmo G. Santos

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

2 Citations (Scopus)


Online monitoring of carbon fibre reinforced polymer (CFRP) components requires a Non-Destructive Testing (NDT) method capable of contactless sensing of damage, while enabling high inspection speeds needed for monitoring large components. Eddy current testing (ECT) of CFRP components has great potential for two reasons. First, ECT probes are capable of operating without contact, although minimizing the lift-off is preferred. Second, impedance analysers with high sample rates make high-speed inspection possible. This research assesses the damage detection capabilities of eddy current probes on CFRP samples with artificial and realistic damage. To support the aptitude of the ECT method for these needs, the CFRP material is characterized and numerical simulations are performed in order to develop optimized and tailored ECT probes for the detection of defects with different morphologies, namely fibre breakage and delaminations, and to take into consideration the highly anisotropic electrical bulk resistivity of the CFRP material. Different ECT probes were designed, produced and experimentally validated. The experiments were performed at a high inspection speed (4 m/s) and the high sensitivity of the probes was demonstrated.

Original languageEnglish
Title of host publication58th Annual Conference of the British Institute of Non-Destructive Testing, NDT 2019
PublisherBritish Institute of Non-Destructive Testing
ISBN (Electronic)9781510893733
Publication statusPublished - Sep 2019
MoE publication typeA4 Article in a conference publication
EventAnnual Conference of the British Institute of Non-Destructive Testing - Telford, United Kingdom
Duration: 3 Sep 20195 Sep 2019
Conference number: 58


ConferenceAnnual Conference of the British Institute of Non-Destructive Testing
Abbreviated titleNDT
Country/TerritoryUnited Kingdom


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