Ultrasonic surface wave electromagnetic acoustic transducers (EMATs) have been widely
utilized in detecting surface defects of metal materials due to their noncontact advantages …

Substantial work has shown that the modulation of structural damage on probing guided
ultrasonic waves can result in wave components corresponding to different frequencies …

Guided-wave-based inspection is a promising method for online monitoring of rails.
However, guided waves in the rail exhibit significant multimodal and dispersion …

Rayleigh waves are successfully employed for the characterization of surface defects
through the utilization of both time and frequency domain analysis. However, a significant …

The subsurface defect in metallic bars with small diameter was detected and evaluated
using laser generated Rayleigh wave for the first time. First, a finite element model was …

Rayleigh waves are widely used in the nondestructive testing of structures due to the energy
concentrating nature. Nevertheless, the wave characteristics become dispersive and …

Rayleigh waves travel along the surface of a solid structure, with most of their energy
focusing within a depth of one wavelength. Thus, the reflection coefficient from a surface …

The interaction mechanism study between defects in variable thickness freeform surface
materials and photoacoustic signals can effectively improve the characterization ability of …

Pipeline guided wave inspection is an efficient tool for determining the defect location.
However, quantifying the defect size remains a challenging task. This paper proposes a …

The key parts of ferromagnetic materials that have served in high temperature environment
for a long time are prone to cracks, and the growth of cracks seriously threatens the safe …