Results 271 to 280 of about 2,693,775 (331)
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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.
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1985
It is now a century since LORD RAYLEIGH published his theoretical proof of the existence of elastic waves propagating along the plane surface of an elastic solid [1]. In reading this paper one is struck by the fact that, except for minor changes in notation, the formulation established by Rayleigh is still followed today in the theory of elastic guided
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It is now a century since LORD RAYLEIGH published his theoretical proof of the existence of elastic waves propagating along the plane surface of an elastic solid [1]. In reading this paper one is struck by the fact that, except for minor changes in notation, the formulation established by Rayleigh is still followed today in the theory of elastic guided
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2003
The Yoffe crack model [I] considers a crack of fixed length propagating with constant speed in an infinite plate under a uniform tensile stress normal to the crack plane. It is assumed that the crack retains its original length during propagation by resealing itself at the trailing end. For this problem the strain energy release rate G is given by $
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The Yoffe crack model [I] considers a crack of fixed length propagating with constant speed in an infinite plate under a uniform tensile stress normal to the crack plane. It is assumed that the crack retains its original length during propagation by resealing itself at the trailing end. For this problem the strain energy release rate G is given by $
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Rayleigh Waves on Curved Surfaces
The Journal of the Acoustical Society of America, 1969Rayleigh waves, which are elastic surface waves occurring at the interface between a solid elastic body and vacuum, are investigated. The exact solution of some canonical elastodynamic problems in a circular cylindrical geometry is given, from which the Rayleigh wave contribution is isolated.
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Seismo-ionospheric Rayleigh Waves
2019Monitoring and understanding of seismic ionospheric disturbances can provide insights on earthquake rupture, solid Earth and ionospheric coupling and ionospheric variations’ behaviors.
Shuanggen Jin, R. Jin, X. Liu
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Journal of Geophysical Research, 1969
Rayleigh waves recorded at Lubbock, Texas, from natural earthquakes and from nuclear explosions are compared. Natural earthquakes generate both first-mode and second-mode Rayleigh waves, but the explosions generate only first-mode Rayleigh waves. Absence of second-mode Rayleigh waves from the explosions is related to a lack of SV energy in the source ...
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Rayleigh waves recorded at Lubbock, Texas, from natural earthquakes and from nuclear explosions are compared. Natural earthquakes generate both first-mode and second-mode Rayleigh waves, but the explosions generate only first-mode Rayleigh waves. Absence of second-mode Rayleigh waves from the explosions is related to a lack of SV energy in the source ...
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Acoustoelectronic Rayleigh Wave Devices
1985Electrons or charged particles can be made to interact with the electric fields of Rayleigh waves in piezoelectric crystal surfaces. The charged particles can be in vacuum, in semiconductors or bound to traps in solids or on surfaces. During the past two decades a large variety of acoustoelectronic amplifiers, signal processors and image processing ...
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Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies
Living Reviews in Relativity, 2021Odylio D Aguiar +2 more
exaly
1985
Waves passing through physical structures provide a convenient means for achieving analog approximations to the mathematical operations of convolution and correlation. Because the waves propagate from one position to another, they provide a natural scan through the structure synchronous with the flow of time.
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Waves passing through physical structures provide a convenient means for achieving analog approximations to the mathematical operations of convolution and correlation. Because the waves propagate from one position to another, they provide a natural scan through the structure synchronous with the flow of time.
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