Rayleigh-wave propagation on a periodically roughened surface

1970 ◽  
Vol 6 (6) ◽  
pp. 149 ◽  
Author(s):  
P.V.H. Sabine
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Roughened Surface

Nonlocal scale effect on Rayleigh wave propagation in porous fluid-saturated materials

2018 ◽  
Vol 148 ◽  
pp. 459-466 ◽  
Author(s):  
L.H. Tong ◽  
S.K. Lai ◽  
L.L. Zeng ◽  
C.J. Xu ◽  
J. Yang
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Scale Effect

Non-reciprocal Rayleigh wave propagation in space–time modulated surface

2021 ◽  
Vol 146 ◽  
pp. 104196 ◽  
Author(s):  
Qian Wu ◽  
Hui Chen ◽  
Hussein Nassar ◽  
Guoliang Huang
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave ◽  
Space Time

Rayleigh wave propagation at the boundary surface of dry sandy ($SiO_2$) thermoelastic solids

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Shishir Gupta ◽  
Rishi Dwivedi ◽  
Smita Smita ◽  
Rachaita Dutta
Keyword(s):  
Wave Propagation ◽  
Surface Wave ◽  
Rayleigh Wave ◽  
Penetration Depth ◽  
Dispersion Equation ◽  
Half Space ◽  
Rayleigh Waves ◽  
Secular Equation ◽  
Rayleigh Surface Wave ◽  
Content Type

Purpose The purpose of study to this article is to analyze the Rayleigh wave propagation in an isotropic dry sandy thermoelastic half-space. Various wave characteristics, i.e wave velocity, penetration depth and temperature have been derived and represented graphically. The generalized secular equation and classical dispersion equation of Rayleigh wave is obtained in a compact form. Design/methodology/approach The present article deals with the propagation of Rayleigh surface wave in a homogeneous, dry sandy thermoelastic half-space. The dispersion equation for the proposed model is derived in closed form and computed analytically. The velocity of Rayleigh surface wave is discussed through graphs. Phase velocity and penetration depth of generated quasi P, quasi SH wave, and thermal mode wave is computed mathematically and analyzed graphically. To illustrate the analytical developments, some particular cases are deliberated, which agrees with the classical equation of Rayleigh waves. Findings The dispersion equation of Rayleigh waves in the presence of thermal conductivity for a dry sandy thermoelastic medium has been derived. The dry sandiness parameter plays an effective role in thermoelastic media, especially with respect to the reference temperature for η = 0.6,0.8,1. The significant difference in η changes a lot in thermal parameters that are obvious from graphs. The penetration depth and phase velocity for generated quasi-wave is deduced due to the propagation of Rayleigh wave. The generalized secular equation and classical dispersion equation of Rayleigh wave is obtained in a compact form. Originality/value Rayleigh surface wave propagation in dry sandy thermoelastic medium has not been attempted so far. In the present investigation, the propagation of Rayleigh waves in dry sandy thermoelastic half-space has been considered. This study will find its applications in the design of surface acoustic wave devices, earthquake engineering structural mechanics and damages in the characterization of materials.

Rayleigh wave propagation in intact and damaged geomaterials

2003 ◽  
Vol 40 (3) ◽  
pp. 377-387 ◽  
Author(s):  
M. Stavropoulou ◽  
G. Exadaktylos ◽  
E. Papamichos ◽  
I. Larsen ◽  
C. Ringstad
Keyword(s):  
Wave Propagation ◽  
Rayleigh Wave

scholarly journals Multiple Rayleigh waves guided by the planar surface of a continuously twisted structurally chiral material

2020 ◽  
Vol 476 (2239) ◽  
pp. 20200314
Author(s):  
Tom G. Mackay ◽  
Akhlesh Lakhtakia
Keyword(s):  
Wave Propagation ◽  
Free Surface ◽  
Rayleigh Wave ◽  
Rayleigh Waves ◽  
Phase Speed ◽  
Angular Frequency ◽  
Planar Surface ◽  
Fixed Frequency ◽  
Numerical Studies ◽  
Anisotropic Solid

The Stroh formalism was adapted for Rayleigh-wave propagation guided by the planar traction-free surface of a continuously twisted structurally chiral material (CTSCM), which is an anisotropic solid that is periodically non-homogeneous in the direction normal to the planar surface. Numerical studies reveal that this surface can support either one or two Rayleigh waves at a fixed frequency, depending on the structural period and orientation of the CTSCM. In the case of two Rayleigh waves, each wave possesses a different wavenumber. The Rayleigh wave with the larger wavenumber is more localized to the surface and has a phase speed that changes less as the angular frequency varies in comparison with the Rayleigh wave with the smaller wavenumber.

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