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 …

This paper addresses the effects of attenuative coatings on the dispersion characteristics of
Lamb wave propagation in elastic plates. The topology of phase velocity and guided wave …

In this paper, a numerical approach for the computation of dispersion relations for three-
dimensional waveguides with arbitrary cross-section is proposed. The formulation is based …

We investigate wave propagation in generally anisotropic viscoelastic plates. The generally
anisotropic material system has 21 independent complex coefficients in its stiffness matrix …

Guided ultrasonic waves are attractive screening tools for elongated engineering structures
due to their ability to propagate over long distances and flexibility in selecting mode …

This paper presents a study on quantitative prediction and understanding of time-harmonic
wave characteristics in damped plates. Material dissipation is modelled by using complex …

Dispersion curves of guided waves provide valuable information about the physical and
elastic properties of waves propagating within a given waveguide structure. Algorithms to …

In this paper we propose an efficient way to post-process output data predicted by Finite
Element (FE) or Boundary Element (BE) codes, when the scattering of Lamb modes by …

The improvement of the resolution and energy conversion efficiency of piezoelectric devices
requires a thorough study of guided wave, especially the evanescent wave modes with high …

A new method for detecting the forward and backward acoustic waves in the piezoelectric
plates by using a system of the acoustically isolated interdigital transducers (IDT) with the …