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 …

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

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 …

To address the problem of low signal-to-noise ratio (SNR) of ultrasonic echo generated by
laser-electromagnetic acoustic transducer (EMAT) ultrasonic method in metal materials, a …

Deformation damage during tension and compression were revealed using in-situ neutron
diffraction for a high manganese steel:(1) When the tensile stress is increased, an indication …

The bogie frame is an important structure of railway vehicles, transmitting the traction,
braking force, lateral force, and vertical force during the traction operation. With the …

Zero group velocity (ZGV) modes can be utilized in many applications in both optics and
acoustics. There exist numerous realizations of metamaterials with ZGVs at higher …

In this paper, a non-contact non-destructive evaluation of cumulative fatigue damage in 75 μ
m-thick aluminum plates is conducted by using the first symmetric zero-group-velocity Lamb …

This contribution intends to convince readers that by virtue of the rich physics involved,
optical excitation, thermal diffusion, thermal expansion, and acoustic wave propagation, and …

Elastic waves traveling through polycrystalline ice Ih can experience distortion due to the
transversely isotropic structure of its crystals. This can pose a challenge to nondestructive …