Results 181 to 190 of about 11,728 (235)
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Ultrasonics, 2019
The Partial Wave Method is unique in that it establishes a foundation on which various elastodynamic guided waves can be compared. In this paper, the method is used to compare quasi-Rayleigh waves and Rayleigh waves, and investigate the eccentricities of the Partial Wave Method at phase velocities equal to the Rayleigh wave speed.
Christopher, Hakoda, Cliff J, Lissenden
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The Partial Wave Method is unique in that it establishes a foundation on which various elastodynamic guided waves can be compared. In this paper, the method is used to compare quasi-Rayleigh waves and Rayleigh waves, and investigate the eccentricities of the Partial Wave Method at phase velocities equal to the Rayleigh wave speed.
Christopher, Hakoda, Cliff J, Lissenden
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Wave gradiometry for USArray: Rayleigh waves
Journal of Geophysical Research: Solid Earth, 2009Wave gradiometry (WG) is a new array data processing technique to extract phase velocity, wave directionality, geometrical spreading, and radiation pattern from spatial gradients of waveforms. A weighted inversion method and a reducing velocity method are introduced to compute spatial gradients accurately for irregular arrays. Numerical experiments are
Chuntao Liang, Charles A. Langston
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Nonlinear magnetoelastic Rayleigh waves
Journal of Magnetism and Magnetic Materials, 1994Abstract The propagation of nonlinear magnetoelastic waves in a semi-infinite ferromagnetic single crystal has been investigated. We consider the nonlinearity of magnetic origin and find the dispersion relation of coupled nonlinear magnetostatic and elastic Rayleigh waves. We present the results of a theoretical study of dispersion and attenuation of
S.A. Nikitov, A.A. Sharafatdinov
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1991
Tomographic imaging involves the collection of data from a series of projections through an object, and the reconstruction of variations in a chosen parameter across a two-dimensional section. It is now an established method for the reconstruction of images from ultrasonic data, and has been used widely in such areas as medical ultrasound and non ...
D. P. Jansen, D. A. Hutchins
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Tomographic imaging involves the collection of data from a series of projections through an object, and the reconstruction of variations in a chosen parameter across a two-dimensional section. It is now an established method for the reconstruction of images from ultrasonic data, and has been used widely in such areas as medical ultrasound and non ...
D. P. Jansen, D. A. Hutchins
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Surface Acoustic Wave Focusing and Induced Rayleigh Waves
Physical Review Letters, 1995We introduce a new method for observing the anisotropic propagation of surface acoustic waves on solids. Point source and point detection of ultrasonic waves, scanned as a function of propagation angle, give the group velocities and intensities of Rayleigh and pseudosurface waves.
, Vines, , Tamura, , Wolfe
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Journal of Applied Physics, 1993
In an elastically isotropic semiinfinite medium having a free surface with a weak harmonic corrugation, the interaction between the Rayleigh wave guided along the free surface and the shear vertical and pressure bulk elastic waves propagating in the substrate is investigated for the propagation directions lying in a plane perpendicular to the average ...
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In an elastically isotropic semiinfinite medium having a free surface with a weak harmonic corrugation, the interaction between the Rayleigh wave guided along the free surface and the shear vertical and pressure bulk elastic waves propagating in the substrate is investigated for the propagation directions lying in a plane perpendicular to the average ...
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Stroh Formalism and Rayleigh Waves
Journal of Elasticity, 2007zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Pulsed nonlinear Rayleigh waves
The Journal of the Acoustical Society of America, 1994Pulsed, plane, nonlinear Rayleigh waves in isotropic solids are investigated with numerical solutions of the coupled spectral equations derived by Zabolotskaya [J. Acoust. Soc. Am. 91, 2569 (1992)]. Calculations of waveform evolution are presented as functions of distance from the source and depth within the solid.
E. Yu. Knight +2 more
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2017
In this chapter, the mechanism for generating fluctuating reservoir pressures will be explored. The generation of surface waves and fluctuating pressures in the upstream reservoir due to gate motion will be examined. The energy input into surface waves is dissipated, or dispersed, as the waves travel away from the structure.
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In this chapter, the mechanism for generating fluctuating reservoir pressures will be explored. The generation of surface waves and fluctuating pressures in the upstream reservoir due to gate motion will be examined. The energy input into surface waves is dissipated, or dispersed, as the waves travel away from the structure.
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1985
In modern Rayleigh-wave devices, transducers are needed to generate Rayleigh waves in response to an applied electrical signal and to sense the waves so as to give an electrical output waveform. These are clearly key requirements for electronic devices, and are usually met by using interdigital transducers on piezoelectric substrates.
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In modern Rayleigh-wave devices, transducers are needed to generate Rayleigh waves in response to an applied electrical signal and to sense the waves so as to give an electrical output waveform. These are clearly key requirements for electronic devices, and are usually met by using interdigital transducers on piezoelectric substrates.
openaire +1 more source