Modeling and Experimental Evaluation of Eddy-Current Probes for Prepreg Fiber Waviness Inspection

This dataset provides experimental validation data supporting the proposed finite element method (FEM) for optimizing a directional eddy current testing (ECT) probe designed to detect in-plane waviness on the surface of carbon fiber prepreg. The study includes the design and evaluation of six ECT probe configurations, varying the angle and aspect ratio of the receiver coils. Sensitivity measurements were conducted to assess the probes' ability to detect fiber-related features. Results indicate that a configuration with rectangular receivers and a 10\u00b0 relative angle offers effective in-line defect detection, achieving a signal-to-noise ratio (SNR) exceeding 70. Additionally, the influence of lift-off distance (up to 1 mm) on sensitivity was examined, with optimal performance observed at approximately 0.6 mm, where the SNR remained above 6. The dataset also highlights practical challenges associated with applying ECT to carbon fiber prepreg inspection.