110 citations · 522 across the 16 of their papers we have counts for
16 papers
Shear-wave-induced softening and simultaneous compaction in dense granular media through acoustic lubrication at flow heterogeneities
Charles K. C. Lieou, Jerome Laurent, Paul A. Johnson +1
We report the simultaneous softening and compaction of a confined dense granular pack in acoustic resonance experiments. Elastic softening is manifested by a reduction of the shear…
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…
Imaging Gigahertz Zero-Group-Velocity Lamb Waves
Qingnan Xie, Sylvain Mezil, Paul H Otsuka +5
We image GHz zero-group-velocity (ZGV) Lamb waves in the time domain by means of an ultrafast optical technique, revealing their stationary nature and their acoustic energy localiz…
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…
Negative reflection of elastic guided waves in chaotic and random scattering media
Benoît Gérardin, Jérôme Laurent, François Legrand +2
The propagation of waves in complex media can be harnessed either by taming the incident wave-field impinging on the medium or by forcing waves along desired paths through its care…