We present a conceptual model for the excitation, filtering, and anisotropic propagation of gravity waves in the stratified solar interior at and below the base of the convection zone. Excitation occurs via penetrative convection into the stratified and sheared interior, where gravity waves (or g-modes) are excited on spatial and temporal scales imposed by convection and the zonal shearing due ...

We study experimentally the propagation of linear magnetoinductive waves in arrays of split-ring resonators with different orientation and spacing. We summarize our experimental results characterizing the effect of coupling of individual elements in magnetic composite metamaterials. We observe the band broadening due to the excitation of magnetoinductive waves which should impose some limitatio...

Elastography provides a powerful tool for histopathological identification and clinical diagnosis based on information from tissue stiffness. Benefiting from high resolution, three-dimensional (3D), and noninvasive optical coherence tomography (OCT), optical micro-elastography has the ability to determine elastic properties with a resolution of ~10 μm in a 3D specimen. The shear wave velocity m...

Magnetic fluids belong to the class of nanomaterials with a high gain light absorption, aggregative and sedimentation stability as well controllability by external fields, which is interest use in field optoacoustics. The purpose work was experimentally study effect optoacoustic transformation magnetic fluid, depending on concentration colloidal particles, boundary conditions, intensity laser i...

Vibration of a floating roof in cases tube and foam seals has been analyzed by ANSYS. Fluid-Structure Interaction (FSI) sloshing phenomenon have considered. Modal responses, time waves frequency spectrums the vibrations two sealing were evaluated during horizontal seismic excitation tank base. Then, effects main mechanical factors seal on vibration investigated. The amplitude case was considera...

Vibrothermography is a promising technique that uses elastic ultrasonic wave excitation in solids for quality maintenance, e.g. in aerospace and automotive industry to monitor the integrity of surface or subsurface features. Vibrothermography allows for defect selective imaging using thermal waves that are generated by elastic sound or ultrasound waves. The mechanism involved is local friction ...

Coupling of Rayleigh waves propagating along two metal surfaces separated by a narrow fluid channel is predicted and experimentally observed. Although the coupling through a fluid (water) is weak, a strong synchronization in propagation of Rayleigh waves even for the metals with sufficiently high elastic contrast (brass and aluminum) is observed. Dispersion equation for two polarizations of the...

Numerous observations accumulated principally during the last 40 years show that seismic waves generated from earthquakes and cultural noise may alter water and oil production. In some cases wave excitation may appreciably increase the mobility of fluids. The effect of elastic waves on the permeability of saturated rock has been confirmed in numerous laboratory experiments. Two related applicat...

This paper considers properties of nonlinear waves and solitons of Korteweg-de Vries equation in the presence of external perturbation. Basing on a method of stochastic destruction of separatrix, we obtain the criterion for stochasticity for such the waves. It shows that under any excitation nonlinear waves and solitons acquire the property of stirring and thereby become stochastically unstable...