Xiaoyu Yang

TL;DR: In this paper, the performance of different ultrasonic pulse-echo approaches for extracting the ply-by-ply structure of multilayered composites was compared and the results indicated that the 5-MHz ultrasound coupled with analytic-signal analysis with log-Gabor filter shows the best performance for reconstructing the multilayer structure of the studied composites.

TL;DR: In this article, the authors simulated the interaction of a laser-generated Rayleigh wave with a subsurface crack and found that the arrival time of the reflected wave peaks was dependent on the height of the crack.

TL;DR: In this article, the authors proposed a tomographic reconstruction method on the basis of classical ultrasound pulse-echo testing, in view of reconstructing the local in-plane fiber orientation in multi-layer composites.

TL;DR: This study compares the performances of various ultrasonic approaches, in different frequency ranges, for extracting the multilayer structure of composites and indicates the high performance of the 5 MHz frequency ultrasound coupled to analytic-signal analysis combined with a log-Gabor filter.

TL;DR: In this paper, a planar ultrasound computed tomography (pU-CT) technique is proposed to reconstruct the local fiber architecture of impacted CFRP laminates, which employs a pulse-echo scanning modality, and the 3D reconstruction process consists of three subsequent analysis steps: step 1: Extraction of front and rear surfaces, delamination interfaces, and interply interfaces.