Results 271 to 280 of about 201,609 (321)

Excitation mechanisms and dispersion characteristics of guided waves in multilayered cylindrical solid media

The Journal of the Acoustical Society of America, 2012
This paper first reviews a method of simulating the propagation characteristics of guided waves in multilayered coaxial cylindrical elastic solid media. Secondly, this method is used to investigate the properties of the guided waves for the ultrasonic long-range non-destructive evaluation techniques for rockbolts.
Hanyin, Cui, Bixing, Zhang, Sherri, Johnstone, Jon, Trevelyan   +3 more
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Dispersion Analysis of Wave Propagation in Cubic–Tetrahedral Assembly by Doublet Mechanics

Chinese Physics Letters, 2004
Based on elongation and shear microstrains between the doublet particles, we present the dynamic scaling equations of plane wave propagation in a cubic–tetrahedral assembly (lattice type H4) in accordance with the formalism of doublet mechanics (DM).
Jin Yan-Fang, Zhang Jue, Fang Jing, Mauro Ferrari   +3 more
openaire   +1 more source

Mechanical normal dispersive 𝒩ℒℋ𝒮 shock waves of microfluidics in shallow model

Modern Physics Letters B
In this paper, we obtain normal dispersive [Formula: see text] shock waves for [Formula: see text] dam-break intensity by the nonlinear heat system. Then, we obtain super-fluid normal dispersive [Formula: see text] shock waves for [Formula: see text] dam-break microfluidics. Finally, we illustrate thermonormal [Formula: see text] pressure of [Formula:
Fatih Şevgin, Talat Körpinar
openaire   +2 more sources

The inversion problem in wave mechanics and dispersion relations

Nuclear Physics, 1958
Abstract The analytical properties of the eigensolutions of a wave equation as function of the energy, considered as a complex variable, serve to give a new derivation of the so called Gel'fand and Levitan integral equation which determines the interaction when the spectral function is known. This method allows an immediate extension to the Dirac and
openaire   +1 more source

Mechanisms of shock wave dispersion and attenuation in weakly ionized cold discharge plasmas

9th International Space Planes and Hypersonic Systems and Technologies Conference, 1999
Both mechanism of shock wave filamentary discharge interaction, and shock wave propagation through transverse temperature non-uniform discharge region are shown to describe available experimental data for shock acceleration and diffusion. A criterion for stable filament formation is obtained for high current discharge giving filament parameters that ...
V. Soloviev, V. Krivtsov, A. Konchakov, N. Malmuth   +3 more
openaire   +1 more source

Numerical Tools for Semi-Active Optimization of 2D Wave’s Dispersion Into Mechanical System

ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Volume 1, 2010
In the context of mid-frequency elastodynamical analysis of periodic structures, the Floquet-Bloch theorem has been recently applied. The latter allows the use of limited-size modeling of a representative cell to characterize waves dispersion properties of the assembled structure.
Manuel Collet, Morvan Ouisse, Mohammed Ichchou, Massimo Ruzzene   +3 more
openaire   +1 more source

The Dispersion by Hydrogen-Like Atoms in Wave Mechanics

1928
In view of the recent experimental determination of the dispersion by atomic hydrogen it seems interesting to apply the theory of dispersion developed by Schrodinger to this case. In this paper we restrict ourselves to an approximation in which terms of the order of relativistic correction are neglected.
openaire   +1 more source

Phase Gradient Mechanism of Self-Focusing and Collapse in Non-Linear Dispersive Travelling Waves

Europhysics Letters (EPL), 1994
We present experimental, theoretical and numerical results of a new mechanism of self-focusing and collapse of travelling-wave pulses originating from large non-linear dispersion. We discovered a transition between the mechanism of Bretherton and Spiegel (Bretherton C.S. and Spiegel E. A., Phys. Lett.
E Kaplan, E Kuznetsov, V Steinberg
openaire   +1 more source

Study on Mechanism and Inversion of Zigzag Dispersion Curves in Rayleigh Wave Exploration

Chinese Journal of Geophysics, 2000
AbstractThe propagation mechanism of zigzag dispersion curves in the Rayleigh wave exploration is theoretically analyzed. The propagation characteristics and interrelation of the guided waves are studied. It is suggested that the zigzag structure of Rayleigh wave is the result of the many modes generated by the low‐velocity layers or fractures in ...
openaire   +1 more source

Searches for continuous-wave gravitational radiation

Living Reviews in Relativity, 2023
Keith Riles
exaly