Acoustic propagation over ground having inhomogeneous surface impedance

1981 ◽  
Vol 70 (3) ◽  
pp. 852-859 ◽  
Author(s):  
James Durnin ◽  
Henry L. Bertoni
Keyword(s):  
Surface Impedance ◽  
Acoustic Propagation ◽  
Inhomogeneous Surface

scholarly journals Reconstruction of perfectly conducting rough surfaces by the use of inhomogeneous surface impedance modeling

2009 ◽  
Vol 3 (2) ◽  
pp. 295-307 ◽  
Author(s):  
Emre Kiliç ◽  
◽  
Mehmet Çayören ◽  
Ali Yapar ◽  
Íbrahim Akduman
Keyword(s):  
Surface Impedance ◽  
Rough Surfaces ◽  
Inhomogeneous Surface ◽  
Impedance Modeling

ACOUSTIC PROPAGATION IN AN EPOXY RESIN AT VERY LOW TEMPERATURES

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-509-C9-511
Author(s):  
P. Doussineau ◽  
W. Schön
Keyword(s):  
Epoxy Resin ◽  
Low Temperatures ◽  
Acoustic Propagation

PONDEROMOTIVE EFFECT OF ELECTROMAGNETIC WAVES ON THIN VIBRATORS WITH WEAKLY PERTURBED SURFACE IMPEDANCE

2020 ◽  
Vol 79 (14) ◽  
pp. 1205-1215
Author(s):  
Yu. M. Penkin ◽  
V. A. Katrich ◽  
M. V. Nesterenko ◽  
S. L. Berdnik
Keyword(s):  
Surface Impedance ◽  
Electromagnetic Waves

The efficiency of application of virtual cross-sections method and hypotheses MELS in problems of wave signal propagation in elastic waveguides with rough surfaces

2016 ◽  
pp. 3564-3575 ◽  
Author(s):  
Ara Sergey Avetisyan
Keyword(s):  
Half Space ◽  
Cross Sections ◽  
Classical Method ◽  
Signal Propagation ◽  
Elastic Half Space ◽  
Layered Systems ◽  
Surface Layers ◽  
Inhomogeneous Surface ◽  
Wave Signal ◽  
The Impact

The efficiency of virtual cross sections method and MELS (Magneto Elastic Layered Systems) hypotheses application is shown on model problem about distribution of wave field in thin surface layers of waveguide when plane wave signal is propagating in it. The impact of surface non-smoothness on characteristics of propagation of high-frequency horizontally polarized wave signal in isotropic elastic half-space is studied. It is shown that the non-smoothness leads to strong distortion of the wave signal over the waveguide thickness and along wave signal propagation direction as well.  Numerical comparative analysis of change in amplitude and phase characteristics of obtained wave fields against roughness of weakly inhomogeneous surface of homogeneous elastic half-space surface is done by classical method and by proposed approach for different kind of non-smoothness.

Simplification of real-world terrain for outdoor acoustic propagation modeling

2016 ◽  
Vol 64 (3) ◽  
pp. 314-323
Author(s):  
Frank Mobley ◽  
Tiffanie Moore ◽  
Matthew Davis
Keyword(s):  
Real World ◽  
Acoustic Propagation ◽  
Propagation Modeling
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