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TECHNICAL PAPERS

Transmission and Polarization of Elastic Waves in Irregular Structures

[+] Author and Article Information
S. B. Platts, N. V. Movchan, A. B. Movchan

Department of Mathematical Sciences, University of Liverpool, Liverpool L69 3BX, U.K.

R. C. McPhedran

School of Physics, University of Sydney, Sydney 2006, Australia

J. Eng. Mater. Technol 125(1), 2-6 (Dec 31, 2002) (5 pages) doi:10.1115/1.1525248 History: Received October 01, 2001; Revised June 05, 2002; Online December 31, 2002
Copyright © 2003 by ASME
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Figures

Grahic Jump Location
Transmittance log(ET) versus the radian frequency ω for a stack of 20 layers arranged in sets of four, with the distance η increasing from D to 3D and the radius rc decreasing from 0.3 to 0.1. The transmission efficiency of a type waves is given by a solid line, and that of b type waves by a dashed line.
Grahic Jump Location
Transmittance log(ET) versus the radian frequency ω for pressure waves (solid line) and shear waves (dashed line). The results correspond to a stack arranged similar to Fig. 2, when increase in distance η from D to 3D is accompanied by increase in radius rc from 0.1 to 0.3.
Grahic Jump Location
Transmittance diagram for the configuration of Fig. 5, but with 10 equidistant layers of cavities of radius rc=0.3 placed behind the 20 existing layers
Grahic Jump Location
Transmittance log(ET) versus radian frequency ω for a stack of 20 gratings of cylindrical cavities, with D=1,η=2D, and rc=0.3. The transmission efficiency of pressure waves is shown by a solid line, and that of shear waves by a dashed line.
Grahic Jump Location
Stack of 20 gratings arranged in five sets of four gratings per set, with the radius rc decreasing from 0.3 to 0.1 in steps of 0.05
Grahic Jump Location
Transmittance log(ET) versus radian frequency ω for a stack of 20 gratings, with D=1,η=2D, and rc varying from 0.3 to 0.1 as in Fig. 2. The solid line corresponds to pressure waves whereas the dashed line corresponds to shear waves.

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