Contactless high-speed eddy current inspection of unidirectional carbon fiber reinforced polymer

This paper presents the development and the results of a customized eddy current (EC) non-destructive testing (NDT) system for highly demanding online inspection conditions. Several planar eddy current array probes were designed, numerically simulated and experimentally compared for the inspection o...

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Bibliographic Details
Published in:Composites. Part B, Engineering Engineering, 2019-07, Vol.168, p.226-235
Main Authors: Machado, Miguel A., Antin, Kim-Niklas, Rosado, Luís S., Vilaça, Pedro, Santos, Telmo G.
Format: Article
Language:English
Subjects:
Carbon fiber reinforced polymer
Contactless
Eddy current testing
High speed
Planar probe
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Summary:This paper presents the development and the results of a customized eddy current (EC) non-destructive testing (NDT) system for highly demanding online inspection conditions. Several planar eddy current array probes were designed, numerically simulated and experimentally compared for the inspection of low conductivity unidirectional carbon fibre reinforced polymer (CFRP) ropes. The inspections were performed using a dedicated scanner device at 4 m/s with 3 mm probe lift-off where defects under 1 mm were detected with an excellent SNR. Different defect morphologies and sizes, such as broken fibres and lateral cuts, were successful detected and compared to conventional probes.
ISSN:1359-8368
1879-1069
DOI:10.1016/j.compositesb.2018.12.021