110 citations · 586 across the 19 of their papers we have counts for
6 papers · 1 filter
Computing zero-group-velocity points in anisotropic elastic waveguides: Globally and locally convergent methods
Daniel A. Kiefer, Bor Plestenjak, Hauke Gravenkamp +1
Dispersion curves of elastic waveguides exhibit points where the group velocity vanishes while the wavenumber remains finite. These are the so-called zero-group-velocity (ZGV) poin…
Cloaking, Trapping and Superlensing of Lamb Waves with Negative Refraction
François Legrand, Benoît Gérardin, François Bruno +4
We report on experimental and numerical implementations of devices based on the negative refraction of elastic guided waves, the so-called Lamb waves. Consisting in plates of varyi…
In-plane backward and Zero-Group-Velocity guided modes in rigid and soft strips
Jérôme Laurent, Daniel Royer, Claire Prada
Elastic waves guided along bars of rectangular cross section exhibit complex dispersion. This paper studies in-plane modes propagating at low frequencies in thin isotropic rectangu…
Negative refraction of Lamb modes: A theoretical study
François Legrand, Benoît Gérardin, Jérôme Laurent +2
This paper provides a theoretical investigation of negative refraction and focusing of elastic guided waves in a free-standing plate with a step-like thickness change. Under certai…
Non contact probing of interfacial stiffnesses between two plates by Zero-Group Velocity Lamb modes
Sylvain Mezil, Jérôme Laurent, Daniel Royer +1
A non contact technique using Zero-Group Velocity (ZGV) Lamb modes is developed to probe the bonding between two solid plates coupled by a thin layer. The layer thickness is assume…
Temporal behavior of laser induced elastic plate resonances
Jérôme Laurent, Daniel Royer, Claire Prada
This paper investigates the dependence on Poisson's ratio of local plate resonances in low attenuating materials. In our experiments, these resonances are generated by a pulse lase…