The propagation of surface waves in a double layered medium over an anisotropic liquid saturated porous half space

2017 ◽  
Vol 36f (2) ◽  
pp. 87
Author(s):  
Dinesh K. Madan ◽  
Ravinder K. Poonia ◽  
Jitander S. Sikka
Keyword(s):  
Surface Waves ◽  
Half Space ◽  
Layered Medium ◽  
Anisotropic Liquid ◽  
Porous Half Space

Surface waves problem in a thermoviscoelastic porous half-space

Wave Motion ◽  
2015 ◽  
Vol 54 ◽  
pp. 100-114 ◽  
Author(s):  
Stan Chiriţă ◽  
Alexandre Danescu
Keyword(s):  
Surface Waves ◽  
Half Space ◽  
Porous Half Space

The effect of boundaries on wave propagation in a liquid-filled porous solid: VII. Surface waves in a half-space in the presence of a liquid layer

1964 ◽  
Vol 54 (1) ◽  
pp. 425-430
Author(s):  
H. Deresiewicz
Keyword(s):  
Wave Propagation ◽  
Dispersion Relation ◽  
Surface Waves ◽  
Half Space ◽  
Attenuation Coefficient ◽  
Liquid Layer ◽  
Velocity Dispersion ◽  
Porous Solid ◽  
Porous Half Space

abstract The velocity dispersion relation and the expression for the attenuation coefficient are derived appropriate to surface waves in a porous half-space supporting a layer of liquid, generalizing a solution due to Stoneley.

Torsional Surface Waves in an Inhomogeneous Layer over a Fluid Saturated Porous Half-Space

2015 ◽  
Vol 32 (1) ◽  
pp. 113-121 ◽  
Author(s):  
S. Gupta ◽  
A. Pramanik
Keyword(s):  
Surface Waves ◽  
Half Space ◽  
Elastic Layer ◽  
Love Wave ◽  
Inhomogeneous Layer ◽  
Homogeneous Half Space ◽  
Inhomogeneous Elastic Layer ◽  
Porous Half Space ◽  
Torsional Surface Wave ◽  
Torsional Surface Waves

ABSTRACTIn the present paper the propagation of torsional surface waves is discussed in an inhomogeneous elastic layer lying over a fluid saturated porous half space. The inhomogeneity in rigidity and density in the inhomogeneous layer plays an important role in the propagation of torsional surface waves. The presence of fluid in the pores diminishes the velocity. Further, it is seen that if the layer becomes homogeneous and the porous half space is replaced by a homogeneous half space, the velocity of the torsional surface waves coincides with that of Love wave. The effect of inhomogeneity factors and porosity factor on the phase velocity of torsional surface wave is delimitated by means of graphs.

Surface Waves in Coated Anisotropic Medium Loaded With Viscous Liquid

1999 ◽  
Vol 67 (2) ◽  
pp. 262-266 ◽  
Author(s):  
T.-T. Wu ◽  
T. Y. Wu
Keyword(s):  
Surface Waves ◽  
Viscous Liquid ◽  
Half Space ◽  
Layered Medium ◽  
Wave Dispersion ◽  
Surface Wave Propagation ◽  
Acoustic Wave Sensor ◽  
Dispersion And Attenuation ◽  
Love Wave Dispersion ◽  
Layered Half Space

The development of micro-acoustic wave sensor in biosensing created the need for further investigations of the surface wave propagation in a viscous liquid loaded layered medium. In this paper, we employed the sextic formalism of surface waves to study the viscous effect on the dispersion and attenuation characteristics of surface waves in a viscous liquid loaded layered medium. The dispersion relation for the viscous liquid loaded single-layered anisotropic half-space is given. Numerical examples of the Rayleigh wave and Love wave dispersion for the cases of a Cu/Fe layered half-space (isotropic) and of a SiO2/Si layered half-space (anisotropic) loaded with viscous liquid are calculated and discussed. [S0021-8936(00)01902-4]

Rayleigh-Type Surface Waves in a Swelling Porous Half-Space

2016 ◽  
Vol 113 (1) ◽  
pp. 91-109 ◽  
Author(s):  
Suraj Goyal ◽  
Dilbag Singh ◽  
S. K. Tomar
Keyword(s):  
Surface Waves ◽  
Half Space ◽  
Porous Half Space

Effect of Pleural Membrane on the Propagation of Rayleigh-Type Surface Waves in Inflated Lungs

1991 ◽  
Vol 58 (3) ◽  
pp. 731-737 ◽  
Author(s):  
Chi-Sing Man ◽  
Mehran Jahed ◽  
Stephen J. Lai-Fook ◽  
Pramode K. Bhagat
Keyword(s):  
Surface Waves ◽  
Half Space ◽  
Layered Medium ◽  
Empirical Test ◽  
High Surface ◽  
Cutoff Frequency ◽  
Lung Parenchyma ◽  
Elastic Half Space ◽  
Elastic Membrane ◽  
Theoretical Predictions

We model the lung parenchyma as an elastic half-space and the pleura as a taut elastic membrane in smooth or in welded contact with the half-space. In each instance we deduce that the presence of a sufficiently high surface tension T in the pleural membrane will lead to the existence of a cutoff frequency f0 for the Rayleigh-type surface waves, and we derive an equation which gives T in terms of f0 and parameters that characterize the layered medium. We performed experiments on four inflated horse lungs at transpulmonary pressures of 5, 10, and 15 cmH2O. A comparison of the experimental results and the theoretical predictions provides an empirical test to the validity of the modeling.

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