Results 21 to 30 of about 61,780 (267)
Influence of shape factor of rectangular roadway on electromagnetic waves under high-order mode
Gong-kuang zidonghua, 2019 The propagation characteristics of electromagnetic waves in different shape roadway are different, and are also different in different modes. On the basis of analysis of theory of electromagnetic wave transmission and multi-mode theory, the influence of ...
WANG Xuqi
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Wave attenuation in porous media and its protective effect on shock wave
地震科学进展, 2021 The earth medium can be regarded as a porous medium. Because the attenuation of the wave is very significant, it can effectively reduce the energy of the shock wave.
Jun Xi, Xinlin Wan, Daoying Xi
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The Attenuation of Magnetoacoustic Waves [PDF]
The Journal of the Acoustical Society of America, 1953 This paper reports the results of a study of the damping effect of a transverse magnetic field on the attenuation of longitudinal waves in a conducting bar of circular cross section. The attenuation is measured by a decay method. The bar is excited by an electrostatic actuator and the motion of the bar during decay is picked up by the polarized ...
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Correction Procedure of Wave Signals for a Viscoelastic Split Hopkinson Pressure Bar [PDF]
Problemy Mechatroniki, 2016 A polymeric split Hopkinson pressure bar technique (SHPB) is preferred for testing materials with low mechanical impedance. However, the use of polymeric bars requires additional analysis for data reduction, temperature complications and additional ...
Jacek JANISZEWSKI +2 more
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Wave attenuation in viscoelastic hierarchical plates
International Journal of Mechanical Sciences, 2022 Phononic crystals (PCs) are periodic structures obtained by the spatial arrangement of materials with contrasting properties, which can be designed to efficiently manipulate mechanical waves. Plate structures can be modeled using the Mindlin-Reissner plate theory and have been extensively used to analyze the dispersion relations of PCs.
Vinícius F. Dal Poggetto +3 more
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Shock Wave Propagation Law of Curved Tunnel and Curved Diffusion Tunnel
Gaoya wuli xuebaoIn view of the unclear attenuation law of shock wave in curved tunnel is unclear, the influence of radius and turning angle on shock wave propagation in curved tunnel was analyzed.
Hao CHENG +5 more
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Wave Attenuation by Sea Ice Turbulence [PDF]
Geophysical Research Letters, 2019 AbstractThe dissipation of wave energy in the marginal ice zone is often attributed to wave scattering and the dissipative mechanisms associated with the ice layer. In this study we present observations indicating that turbulence generated by the differential velocity between the sea ice cover and the orbital wave motion may be an important dissipative
J. J. Voermans +4 more
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Investigation of the Physical Mechanism of Acoustic Attenuation in Viscous Isotropic Solids
Micromachines, 2022 The traditional acoustic attenuation coefficient is derived from an analogy of the attenuation of an electromagnetic wave propagating inside a non-ideal medium, featuring only the attenuation of wave propagation. Nonetheless, the particles inside viscous
Lin Fa +8 more
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Finely resolved along-track wave attenuation estimates in the Antarctic marginal ice zone from ICESat-2 [PDF]
The CryosphereAdvances in our modelling capacity of wave–ice interactions are hindered by the limited availability of wave observations in sea ice and, specifically, under a broad range of wave and sea ice conditions. Satellite remote sensing provides opportunities to
J. J. Voermans +9 more
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PLoS ONE, 2021 Background and aimsWe investigated the usefulness of combining two-dimensional shear wave elastography and the ultrasound-guided attenuation parameter for assessing the risk of progressive non-alcoholic steatohepatitis, defined as non-alcoholic ...
Hidekatsu Kuroda +7 more
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