There are some limitations when conventional ultrasonic testing methods are used for
testing early damage in metal parts. With the continuous development of acoustics and …

Driven by the rapid advancement in manufacturing technologies, engineering structures with
complex geometries are increasingly applied in various industries, posing challenges to the …

Residual stress and its distribution are the key indicators to ensure structural integrity.
However, current ultrasonic methods are not appropriate for complex stress measurement …

Selective laser melting (SLM) technology is a high-end dual-use technology that is
implemented in aerospace and medical equipment, as well as the automotive industry and …

Extensive research has been conducted on zero-group-velocity (ZGV) Lamb waves in
elastic plates, demonstrating significant progress in the field of nondestructive testing …

In this paper, modelling and numerical perspective of zero-group velocity (ZGV) combined
harmonic generated by guided waves mixing are investigated. The conditions for the …

Surface treatment intensity monitoring is still an open and challenging nondestructive testing
problem. For the estimation of residual stress with ultrasonic measurements, local linear and …

In this paper, we present an experimental observation of the phenomenon known as zero-
group velocity (ZGV) combined harmonic generation, which is induced by the mixing of …

This paper numerically and experimentally investigates the resonant behavior of one-way
Lamb and SH (shear horizontal) mixing method in thin plates with quadratic nonlinearity …

Non-collinear interaction of guided elastic waves in a homogeneous and isotropic plate with
quadratic material nonlinearity is analyzed theoretically to investigate the sum and …