This article presents a comprehensive review of the laser-based guided ultrasonic waves
propagation imaging (G-UPI) system and respective signal/data processing methods related …

Elastic waves in anisotropic media can exhibit a power flux that is not collinear with the wave
vector. This has notable consequences for waves guided in a plate. Through laser-ultrasonic …

Inspection of adhesively bonded metallic plates, commonly used in aircraft structures,
remains challenging for modern non-destructive testing (NDT) techniques. When a probing …

Zero-group velocity (ZGV) modes in rails are studied through simulation and experiments in
this work. Local resonances associated with ZGV modes appear as distinct, sharp peaks in …

Nanoporosity in silicon leads to completely new functionalities of this mainstream
semiconductor. A difficult to assess mechanics has however significantly limited its …

Abstract Zero-group-velocity (ZGV) waves have the peculiarity of being stationary, and thus
locally confining energy. Although they are particularly useful in evaluation applications …

Adhesively bonded metals are increasingly used in many industries. Inspecting these parts
remains challenging for modern non-destructive testing techniques. Laser ultrasound (LU) …

The sensitivity of ultrasonic wave interactions to material and geometric nonlinearities
makes them very useful for nondestructive characterization. The ability of guided waves to …

We demonstrate the in situ measurement of zero-group-velocity Lamb waves and thickness-
resonances in steel sheet samples using laser-based ultrasound, while changing the …

Solution heat treatment increases the formability of 7xxx series aluminum alloys by
dissolution of nanoscale hardening phases. However, subsequent natural aging at room …