Results 41 to 50 of about 1,910,612 (125)

Memory dependent triple-phase-lag thermo-elasticity in thermo-diffusive medium

open access: yesInternational Journal of Applied Mechanics and Engineering, 2023
The objective of the paper is to look at the propagation and reflection of plane waves in a thermo-diffusion isotropic medium. The reflection of plane waves in a thermo-diffusion medium was investigated in this study with reference to triple phase lag ...
Anand Kumar Yadav   +2 more
doaj   +1 more source

Investigation of ultrasound plane-wave imaging for optimal synthetic focusing

open access: yesScientific Reports
Plane-wave imaging for ultrafast ultrasound, revolutionized by substantially enhancing frame rates, has paved the way for numerous applications in medical ultrasound.
Doyoung Jang   +4 more
doaj   +1 more source

Consideration of Oblique Incidence in 3-D Imaging of a Planar Interface With a Circular Dipole Array in an Air-Filled Borehole

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
We consider the effects of oblique incidence of a wave on the creation of a 3-D image of a planar interface with an array-type directional borehole radar. In this study, we focus on the situation where the radar probe is close to the planar interface. In
Satoshi Ebihara   +5 more
doaj   +1 more source

Efficient Transmit Delay Calculation in Ultrasound Coherent Plane-Wave Compound Imaging for Curved Array Transducers

open access: yesApplied Sciences, 2019
The recently introduced plane-wave compounding method based on multiple plane-wave excitation has enabled several new applications due to its high frame rate (>1000 Hz).
Dooyoung Go   +3 more
doaj   +1 more source

Acoustic Scattering Analysis of Underwater Elastic Spherical Shell under Point Sound Source Incidence

open access: yes水下无人系统学报, 2023
In order to study the acoustic scattering of underwater targets, the conversion factor of plane wave and spherical wave of point sound source was calculated on the basis of the analytical solution of the classical Rayleigh normal series, combined with ...
Jinyan ZHENG, Meixia CHEN, Wenkai DONG
doaj   +1 more source

Is the Phase of Plane Waves an Invariant? [PDF]

open access: yesZeitschrift für Naturforschung A, 2010
Based on the invariance of the phase of waves, plane waves were shown to propagate with negative frequencies in a medium which moves at ’superluminal’ speed opposite to the propagation direction of the plane waves. The validity of the invariance of the phase of plane waves was then called into question.
openaire   +2 more sources

On the Reflection of a Spherical Sound Wave from a Finite Size Surface

open access: yesApplied Sciences
Room acoustics computer models based on geometrical acoustics usually handle the sound reflections by the assumption of plane waves. However, if the sound source is a point source, which is usually the case, the spherical wave reflection would be more ...
Jens Holger Rindel
doaj   +1 more source

Ionospheric scintillation modeling. I. Validity of the plane wave approximation for an electromagnetic wave illuminating the ionosphere

open access: yesJournal of Space Weather and Space Climate
Low Earth Orbit (LEO) satellites have a low altitude orbital track around the Earth. For a satellite to Earth link passing through the ionosphere, the approximation of the electromagnetic wave illuminating the ionosphere irregularities by a plane wave is
Morel Grégory   +3 more
doaj   +1 more source

On the Structure of Plane Detonation Waves [PDF]

open access: yesThe Physics of Fluids, 1960
A steady planar detonation wave, considered to be a shock wave followed by a reaction zone, is studied with both irreversible and reversible first-order reaction kinetics. A perturbation solution with first-order transport effects, valid in the reaction zone for those cases where the ratio of the characteristic collision time to the characteristic ...
openaire   +2 more sources

Generalized plane gravitational waves of non-symmetric unified field theories in plane symmetry

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2012
In this paper we investigated the plane wave solutions of both the weak and strong non-symmetric unified field equations of Einstein and Bonner in a generalized plane symmetric space-time in the sense of Taub [Ann. Math.
Sanjiv R. Bhoyar, Ajit Deshmukh
doaj   +1 more source

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