Flat lens for Lamb waves focusing

Marc Dubois; Patrick Sebbah; Sébastien Guenneau; Nicolas Etaix; Ros Kiri Ing; Mohamed Farhat; Stefan Enoch

META 2021, META'12

Marc Dubois, Patrick Sebbah, Sébastien Guenneau, Nicolas Etaix, Ros Kiri Ing, Mohamed Farhat, Stefan Enoch

Last modified: 2011-12-30

Abstract

Flat lens concept proposed in 1968 by V.G. Veselago is extended to surface acoustic waves on a thin plate. A 52°-tilted square lattice of circular holes drilled in a Duraluminium plate has been chosen to experimentally demonstrate focusing of flexural waves.

Keywords

Phononic crystals, negative refraction, Lamb waves