... Abstract Electromagnetic acoustic transducers (EMATs) are commonly used for non-destructive testing and the location of defects within conductive materials. EMATs can be designed to generate guided waves, such as Lamb waves. Lamb waves are typically used for screening for defects as they can...

... Abstract Scanning laser Doppler vibrometer (SLDV) is widely used to obtain the full wavefields of propagating guided waves, particularly Lamb waves. Signal processing is applied on such full wavefields in order to reveal the defects in the inspected structure. However, obtaining the full...

... mode coincides with that of a propagating Lamb mode in the plate whose frequency, when doubled, happens to be the frequency of another propagating Lamb mode. Lamb waves nonlinear waves second harmonic generation composite plates normal mode expansion structural health monitoring...

... and signal-to-noise ratio (SNR) were found to have a significant influence on measurement repeatability and methods to reduce these effects were applied. Lamb waves guided ultrasonic waves measurement noise phase velocity Proceedings of the ASME 2023 50th Annual Review of Progress in Quantitative...

... demonstrate that the use of compensation strategies improve detectability of damage with a higher reliability of the system. Keywords: Ultrasound, Lamb waves, Structural Health Monitoring, Environmental effects, Damage detection. 1. INTRODUCTION Guided ultrasonic waves are efficiently adopted to track changes...

.... Lamb waves Guided ultrasonic waves FEA Composites Anisotropy Proceedings of the ASME 2022 49th Annual Review of Progress in Quantitative Nondestructive Evaluation QNDE2022 July 25-27, 2022, San Diego, CA QNDE2022-98375 ANISOTROPY INFLUENCE ON GUIDED WAVE PROPAGATION AND STEERING...

..., impacting imaging performance. Defect characterization can be improved by considering the scattering characteristics of various damage types for the sparse array signal processing. Guided wave scattering (A0 Lamb wave mode) was investigated around an artificial insert delamination in a quasi-isotropic...

... the foundation for fast and robust quantitative industrial inspection with Lamb guided waves. Keywords: Lamb waves; convolutional neural network; DeepFIT; machine learning; corrosion; quantitative imaging NOMENCLATURE v0 starting phase velocity map v1 final phase velocity map vtrue true phase velocity map v0...

... properties to be free parameters, but constrained them to be equal for all samples. surface acoustic waves Lamb waves Rayleigh waves laser-ultrasound layer characterization roll cladded aluminum Proceedings of the ASME 2021 48th Annual Review of Progress in Quantitative Nondestructive...

... health monitoring (SHM) of composite panels can be achieved using guided waves propagating along the structure. Propagation and scattering of the A 0 Lamb wave mode in a quasi-isotropic composite laminate was modelled using full three-dimensional (3D) Finite Element (FE) simulations. Individual ply...

... Abstract Nonlinear ultrasonic guided waves have superior sensitivity of the early fatigue damage. This paper investigates the analysis of the second harmonics of Lamb waves in a free boundary aluminum plate, and the internal resonance conditions between the Lamb wave primary modes...

... the possible ways to improve the resolution of the algorithms. Lamb waves convolutional neural network beamforming diffraction tomography corrosion quantitative imaging Proceedings of the ASME 2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation QNDE2021 July 28-30, 2021...