Layered Media
Homogenization of Periodic Objects Embedded in Layered Media
... Abstract—An effective medium modeling technique is proposed to homogenize the periodic objects embedded in layered media. The homogenization is based on the same scattering coefficients. An integral equation ...
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Radar Scatter from Layered Media and Rough Surfaces
... The goal of this research is to model backscatter from sea ice ridges using an aerial-mounted ice penetrating radar. Sea ice ridges are modeled as layered media with a rough surface. Sea ice ridges consist ...
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Towards the Detection of Multiple Reflections in Time-Domain EM Inverse Scattering of Multi-Layered Media
... multi-layered media is ...non-dispersive media, and providing an accurate time delay estimation (TDE) of backscattered signals, the proposed method allows not only to evaluate the presence of ...
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Windowed Integral Equation Methods for Problems of Scattering by Defects and Obstacles in Layered Media
... of layered media have remained inefficient—in view of the expense required for computation of the point values of the Green function suitable for layered media—which has typically rendered BIE ...
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An EFficient Method for Computing the Interaction of Open Ended Circular Waveguide with a Layered Media
... the layered media. Assuming that the thickness of layered media is d with free space backing, see Figure 1, the reflection coefficient S 11 at the open ended aperture ...
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The double absorbing boundary method for elastodynamics in homogeneous and layered media
... Methods: The DAB method is based on truncating the unbounded domain to produce a finite computational domain, and on applying a local high-order ABC on two parallel artificial boundaries, which are a small distance ...
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An Improved Method for Microwave Nondestructive Dielectric Measurement of Layered Media
... Numerical simulations have been conducted to verify the performance of the proposed technique for nondestructive measurement of the dielectric properties of layered media. Consider the parallel-plate ...
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A fast iterative solver for scattering by elastic objects in layered media
... Abstract: We developed a fast iterative solver for computing time-harmonic acoustic waves scattered by an elastic object in layered media. The discretiza- tion of the problem was performed using a finite ...
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Reconstruction of Objects Buried in Layered Media Based on an Equivalent Current Source
... This paper proposes a 2-D equivalent current source inversion based imaging technique for layered media. The effects of the frequency of incident wave, array aperture size, and SNR on imaging were ...
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Stark-Induced Optical Nonlinearity in Gaseous NH₂D and Optical Waves in Layered Media
... lasers.. In order for a double-Bragg waveguide to support a confined mode two Bragg conditions plus a phase resonance condition have to be satis- fied simultaneous[r] ...
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Full matrix capture with time-efficient auto-focusing of unknown geometry through dual-layered media
... two media of acoustic velocities ci and c can be calculated using the well- known Snell’s Law (as used for angle beam inspection to determine the path ultrasonic energy will take as it leaves the transducer and ...
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Reconstruction of annular bi-layered media in cylindrical waveguide section
... 5.1 Coupling to the open-ended quarter wave coaxial waveguide resonator By probing the resonator in the middle of the coaxial waveguide instead of at the left end, separation of the resonance frequencies is narrowed for ...
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Acoustic wave propagation in multi layered media : An application to hip implants
... The layered structure of cup 2 was a bit more complicated than the first one. With a layer of gelatin after the first layer of water, an extra reflection is expected because of the small difference of acoustic ...
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Time Reversal of Electromagnetic Waves in Randomly Layered Media.
... Also it can be used to obtain information about the medium. Propagation of electromag- netic waves in homogeneous media is well studied and exact methods of solution have been developed ([6]). On the other hand ...
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Detection and Thickness Estimation of Water Layer in Layered Medium Based on Multi Reflection of Oblique Incident Ultrasonic Wave
... oxy-concrete layered medium and acquire information on thickness and distribution area of ...multi-layered media including a liquid layer are calculated ...
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Determination of Material Characteristics and Shear Wave Velocity of Volcanic Sediment Layer of Mount Samalas Using MASW Technique
... The surface wave method is based on the natural dispersion curve of the Rayleigh wave in layered media (Fig. 2) to obtain the subsurface shear wave velocity profile... Geologica[r] ...
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Simulation of flow Through Layered Porous Media
... in layered media, flow of oil in reservoirs and into production wells, blood flow through lungs and other human tissues, porous ball bearing, lubrication mechanisms with porous lining, in addition to heat ...
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Three-Dimensional Axisymmetric Invisibility Cloaks with Arbitrary Shapes in Layered-Medium Background
... in layered-media background are presented using the transformation ...in layered-media background has been verified by the proposed ...
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Sturm-Liouville Matrix Equation for the Study of Electromagnetic-Waves Propagation in Layered Anisotropic Media
... In layered anisotropic structures the Maxwell’s equations have been solved using different techniques. In his work, Oldano [8] used Maxwell’s equations in Berreman’s formalism [9] as starting point to develops a 4 ...
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Vol 3, No 3 (2012)
... the layered media [1], [2], [11] and [12] which are anisotropic in nature become very important and have long been of interest to researchers in the fields of geophysics, acoustics and nondestructive ...
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