Dataset on comprehensive ultrasonic guided wavefield measurements of two GFRP plates with four round delaminations at various depths and in four distinct shapes, captured in both narrowband and broadband frequencies

This dataset, comprising both numerical and experimental information, is devoted to the analysis of full wavefields in guided wave experiments using GFRP (Glass Fiber Reinforced Polymer) materials. It is intended to serve as a benchmark for researchers to validate their proposed methods and compare results in future studies. Two GFRP plate specimens (500 × 500 × 2 mm³) were fabricated using 12 layers of woven fabric (GG204P-VV192T/202 pre-pregs), with fibers oriented at 0° and 90° in alternating layers. Four Teflon inserts were embedded in each specimen during manufacturing. Specimen 1 contains four delaminations of various shapes, whereas Specimen 2 features four round delaminations at different depths. The detailed description of the dataset is published in [1]. To excite guided waves, a chirp signal and a Hann-windowed, five-cycle tone-burst with carrier frequencies of 50 kHz, 100 kHz, and 200 kHz were used. A piezoelectric actuator, attached at the center of each specimen, generated the waves. Data were acquired on measurement grids of 497 × 497 and 251 × 251 points, respectively. In the numerical simulation, a 3D GFRP model replicating the geometry of Specimen 1 was constructed and analyzed using the finite element method (FEM) in COMSOL. A 10 mm diameter, 0.2 mm thick piezoelectric transducer (PZT) was placed on the back plate surface near the damage. A broadband chirp signal (150 μs duration, 5–250 kHz frequency range) was applied, and the out-of-plane velocities on the front plate surface were recorded at 512 × 512 points. [1] Kai Zhu, Maosen Cao, Wiesław Ostachowicz, Maciej Radzienski, K-means aided broadband ultrasonic guided wavefield processing for damage detection in composite panels, Mechanical Systems and Signal Processing, Volume 231, 2025, 112696, ISSN 0888-3270, https://doi.org/10.1016/j.ymssp.2025.112696.