Experimental assessment of an ultrasonic band gap in a periodic two-dimensional composite

Author

De Espinosa, F.R.M. ; Jimeniz, E. ; Torres, M.

Author_Institution

Inst. de Acustica, CSIC, Madrid, Spain

Volume

1

fYear

1997

fDate

5-8 Oct 1997

Firstpage

537

Abstract

An experimentally observed ultrasonic full band-gap in periodic two dimensional composites is described. The composite structure consists of an aluminum alloy plate with a square periodic arrangement of cylindrical holes filled with mercury. The band-gap found has a bandwidth of about 600 kHz around the first network resonance (750 kHz) along the [100] direction. The experimental test was performed by means of the through-transmission technique, exciting the structure with longitudinal waves. Moreover, different acoustic scannings of the vibration amplitude were also performed

Keywords

acoustic resonance; aluminium; composite materials; energy gap; mercury (metal); ultrasonic propagation; ultrasonic transmission; 600 kHz; 750 kHz; Al-Hg; acoustic scanning; aluminum alloy plate; band-gap; bandwidth; composite structure; cylindrical holes; first network resonance; longitudinal waves; mercury; periodic two dimensional composites; periodic two-dimensional composite; square periodic arrangement; through-transmission technique; ultrasonic band gap; ultrasonic full band-gap; vibration amplitude; Acoustic propagation; Acoustic scattering; Aluminum alloys; Brillouin scattering; Lattices; Periodic structures; Photonic band gap; Photonic crystals; Resonance; Ultrasonic variables measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1997. Proceedings., 1997 IEEE

Conference_Location

Toronto, Ont.

ISSN

1051-0117

Print_ISBN

0-7803-4153-8

Type

conf

DOI

10.1109/ULTSYM.1997.663078

Filename

663078