P3K-1 Coupled Modes on a Rectangular Grating

Author

Morvan, Bruno ; Leduc, Damien ; Izbicki, Jean-Louis ; Hladky-Hennion, Anne-Christine

Author_Institution

Lab. d´´Acoustique Ultrasonore et d´´Electronique, Havre Univ., Le Havre

fYear

2006

fDate

2-6 Oct. 2006

Firstpage

2238

Lastpage

2241

Abstract

This work deals with the propagation of ultrasonic Lamb waves in a solid plate with a periodical corrugated interface. The periodicity of the guide implies that the Lamb waves dispersion curves fold back at the edge of the Brillouin zone. For the mini-stop-band, dispersion curves cross and a coupling is possible between the modes. These phenomena are experimentally and numerically highlighted for a metallic waveguide. Finally conversions or existence of gaps are linked with the power spectral density of the grating profile

Keywords

plates (structures); surface acoustic waves; ultrasonic dispersion; ultrasonic propagation; Brillouin zone; Lamb waves dispersion curve; grating profile; metallic waveguide; periodical corrugated interface; power spectral density; rectangular grating; solid plate; stop band; ultrasonic Lamb wave propagation; Aluminum; Corrugated surfaces; Frequency conversion; Gratings; Photonic band gap; Resins; Rough surfaces; Solids; Surface roughness; Surface waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2006. IEEE

Conference_Location

Vancouver, BC

ISSN

1051-0117

Print_ISBN

1-4244-0201-8

Electronic_ISBN

1051-0117

Type

conf

DOI

10.1109/ULTSYM.2006.562

Filename

4152418