Reflection and Transmission of Acoustic Wave through a Multifractional Bubble Layer

2020 ◽  
Vol 58 (1) ◽  
pp. 97-100
Author(s):  
D. A. Gubaidullin ◽  
R. N. Gafiyatov
Keyword(s):  
Acoustic Wave ◽  
Reflection And Transmission ◽  
Bubble Layer

scholarly journals Reflection and Transmission of Acoustic Waves through the Layer of Multifractional Bubbly Liquid

2018 ◽  
Vol 148 ◽  
pp. 15001
Author(s):  
Damir Anvarovich Gubaidullin ◽  
Ramil Nakipovich Gafiyatov
Keyword(s):  
Acoustic Waves ◽  
Wave Reflection ◽  
Water Model ◽  
Bubbly Liquid ◽  
Reflection And Transmission ◽  
Transmission Coefficients ◽  
Multilayer Medium ◽  
Bubble Layer ◽  
The Mathematical Model ◽  
Theoretical Results

The mathematical model that determines reflection and transmission of acoustic wave through a medium containing multifractioanl bubbly liquid is presented. For the water-water with bubbles-water model the wave reflection and transmission coefficients are calculated. The influence of the bubble layer thickness on the investigated coefficients is shown. The theory compared with the experiment. It is shown that the theoretical results describe and explain well the available experimental data. It is revealed that the special dispersion and dissipative properties of the layer of bubbly liquid can significantly influence on the reflection and transmission of acoustic waves in multilayer medium

scholarly journals Coefficients of Reflection and Transmission of Transverse and Longitudinal Acoustic Wave in the Blatz-Ko Material

2014 ◽  
Vol 14 (2) ◽  
pp. 85-92 ◽  
Author(s):  
Maciej Major ◽  
Izabela Major ◽  
Judyta Różycka
Keyword(s):  
Acoustic Wave ◽  
Middle Layer ◽  
Homogeneous Layer ◽  
Homogeneous Material ◽  
Reflection And Transmission ◽  
Longitudinal Acoustic ◽  
Foam Rubber ◽  
Longitudinal Acoustic Wave ◽  
Material Composite ◽  
Final Effect

Abstract The purpose of this paper is to analyze the propagation of transverse and longitudinal acoustic wave in a composite made of hyperelastic Blatz-Ko material. Composite consists of a homogeneous layer of predetermined thickness d separating two infinite homogeneous material areas. In the paper it is assumed that the middle layer is filled with a homogeneous rubber (ƒ=1), whereas the external areas with foam rubber (ƒ=0). The final effect of paper are graphs of coefficients reflection of transverse and longitudinal acoustic wave, propagating in this composite.

Low‐frequency acoustic wave generation in a resonant bubble layer

1994 ◽  
Vol 95 (5) ◽  
pp. 3019-3019 ◽  
Author(s):  
O. Druzhinin ◽  
L. Ostrovsky ◽  
A. Prosperetti
Keyword(s):  
Acoustic Wave ◽  
Low Frequency ◽  
Wave Generation ◽  
Acoustic Wave Generation ◽  
Bubble Layer

Low‐frequency acoustic wave generation in a resonant bubble layer

1996 ◽  
Vol 100 (6) ◽  
pp. 3570-3580 ◽  
Author(s):  
Oleg A. Druzhinin ◽  
Lev A. Ostrovsky ◽  
Andrea Prosperetti
Keyword(s):  
Acoustic Wave ◽  
Low Frequency ◽  
Wave Generation ◽  
Acoustic Wave Generation ◽  
Bubble Layer

Reflection of an acoustic wave from a bubble layer of finite thickness

2016 ◽  
Vol 61 (10) ◽  
pp. 499-501 ◽  
Author(s):  
D. A. Gubaidullin ◽  
Yu. V. Fedorov
Keyword(s):  
Acoustic Wave ◽  
Finite Thickness ◽  
Bubble Layer

Parabolas from Reconstructed Surfaces Observed in Convergent-Beam RHEED Patterns

1990 ◽  
Vol 48 (2) ◽  
pp. 398-399
Author(s):  
M. Gajdardziska-Josifovska
Keyword(s):  
Electron Microscopy ◽  
High Energy ◽  
Two Dimensional ◽  
High Energy Electron ◽  
Reflection And Transmission ◽  
Experimental Diffraction Pattern ◽  
Surface Resonance ◽  
Reconstructed Surfaces ◽  
Reflection Electron Microscopy ◽  
Convergent Beam

Parabolas have been observed in the reflection high-energy electron diffraction (RHEED) patterns from surfaces of single crystals since the early thirties. In the last decade there has been a revival of attempts to elucidate the origin of these surface parabolas. The renewed interest stems from the need to understand the connection between the parabolas and the surface resonance (channeling) condition, the latter being routinely used to obtain higher intensity in reflection electron microscopy (REM) images of surfaces. Several rather diverging descriptions have been proposed to explain the parabolas in the reflection and transmission Kikuchi patterns. Recently we have developed an unifying general treatment in which the parabolas are shown to be K-lines of two-dimensional lattices. Here we want to review the main features of this description and present an experimental diffraction pattern from a 30° MgO (111) surface which displays parabolas that can be attributed to the surface reconstruction.

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