Results 21 to 30 of about 2,649,760 (341)
Seismic metamaterial surface for broadband Rayleigh waves attenuation
Materials & Design, 2023 Elastic metamaterials (EMMs) have been widely studied owing to their advantages in controlling the propagation of elastic waves. In the past decade, considerable efforts have been made to attenuate Rayleigh waves using EMMs.
Weijia Yu, Linyun Zhou
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Noise generation in the solid Earth, oceans, and atmosphere, from non-linear interacting surface gravity waves in finite depth [PDF]
, 2012 Oceanic pressure measurements, even in very deep water, and atmospheric pressure or seismic records, from anywhere on Earth, contain noise with dominant periods between 3 and 10 seconds, that is believed to be excited by ocean surface gravity waves. Most
Ardhuin, Fabrice, Herbers, Thomas H. C.
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Journal of the Mechanical Behavior of Materials, 2014 In this study, the coupled effects of gravity and nonhomogeneity on Rayleigh waves in an anisotropic layer placed over an isotropic viscoelastic half-space of higher order are discussed. The dispersion properties of waves are derived.
Kakar Rajneesh
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Rayleigh wave nonlinearity [PDF]
The Journal of the Acoustical Society of America, 1993 The elastic nonlinearity in Rayleigh waves is investigated theoretically. Studies have revealed that nonlinearity in Rayleigh waves involves nonlocal as well as local effects [Parker and Talbot, J. Elast. 15, 389 (1985)]. Finite amplitude effects on sound in fluids are entirely local, and the effects on different wavelets are therefore independent.
Mark F. Hamilton +2 more
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Transient Propagation and Scattering of Quasi-Rayleigh Waves in Plates: Quantitative comparison between Pulsed TV-Holography Measurements and FC(Gram) elastodynamic simulations [PDF]
, 2019 We study the scattering of transient, high-frequency, narrow-band quasi-Rayleigh elastic waves by through-thickness holes in aluminum plates, in the framework of ultrasonic nondestructive testing (NDT) based on full-field optical detection.
Faisal Amlani +6 more
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Non-Hamiltonian features of a classical pilot-wave dynamics [PDF]
, 2014 A bouncing droplet on a vibrated bath can couple to the waves it generates, so that it becomes a propagative walker. Its propulsion at constant velocity means that a balance exists between the permanent input of energy provided by the vibration and the ...
Labousse, Matthieu, Perrard, Stéphane
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Shear wave generation using a spiral electromagnetic acoustic transducer [PDF]
, 2006 A spiral electromagnetic acoustic transducer (EMAT) is efficient in eddy current generation and has been used for surface defect inspection using Rayleigh waves or thickness gauging based on plane waves in echo mode.
Baillie, Iain +5 more
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Magnetoelastic Rayleigh wave convolver
Applied Physics Letters, 1975 An epoxy−bonded LiNbO3−YIG−LiNbO3 composite structure has been constructed and operated as a magnetoelastic Rayleigh wave convolver with 50−MHz input signals. The acoustic signals were propagated on a (110) YIG surface and the convolution characteristics were studied as a function of the magnitude and direction of the applied magnetic field. Nonuniform
Robbins, William P., Lundstrom, Mark S
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International Journal of Mathematics and Mathematical Sciences, 2005 The effect of the temperature and initial hydrostatic stress has been shown on the propagation of Rayleigh waves in a viscoelastic half-space. It has been explained how the velocity of Rayleigh waves depends not only on the parameters pertaining to ...
Sushil Kumar Addy, Nil Ratan Chakraborty
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Lamb wave near field enhancements for surface breaking defects in plates [PDF]
, 2012 Near field surface wave ultrasonic enhancements have previously been used to detect surface breaking defects in thick samples using Rayleigh waves. Here, we present analogous surface wave enhancements for Lamb waves propagating in plates.
Clough, A. R. +1 more
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