Results 261 to 270 of about 682,963 (292)

Resonance Densities in a Cylindrical Plasma Column

Physical Review Letters, 1963
BS>Interaction between an electromagnetic wave and a cylindrical plasma give rise to a resonance spectrum with a series of peaks at which the wave is strongly scattered. A measurement of the electron densities at which the resonances occur is given. A plasma-filled glass tube is situated in a waveguide with its axis perpendicular to the electric field ...
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Pore Pressure Buildup in Resonant Column Tests

Journal of Geotechnical Engineering, 1984
Resonant column tests were performed on fully saturated and dry hollow cylindrical and fully saturated solid cylindrical specimens of Monterey No. 0 sand of 60% relative density subjected to 96 kPa confining pressure. The hollow specimens were tested by torsional excitation and the solid specimens by longitudinal excitation.
Riley M. Chung, Felix Y. Yokel, Herbert Wechsler   +2 more
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Resonant-Column Testing—Problems and Solutions

1978
The resonant-column test is a relatively nondestructive test employing wave propagation in cylindrical specimens of soil and rock. Test results are usually quite accurate, but in some cases insufficient coupling exists between specimen and apparatus or specimens are too stiff for a given apparatus, or both.
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Kinetic Model of Tonks-Dattner Resonances in Plasma Columns

The Physics of Fluids, 1969
The linearized Vlasov equation is used to describe the coupling to plasma waves in bounded plasmas of externally driven quasistatic electric fields of frequency ω, treating as an example a cylindrically symmetric equilibrium. The coupling takes place at the plasma resonance, where ω equals the local plasma frequency.
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Resonant Air Column in Wind Instruments

2019
Wind musical instruments are aerophone, producing sound through the vibration of an air column. A simplified model of a wind instrument includes the source of air, the sound generator, the resonating air column and the radiation of sound. If we make reference to how air column is excited by means of vibrating reed, the following classification of wind ...
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Nonlinear Resonances in a Column Subjected to a Constant End Force

Journal of Applied Mechanics, 1980
A canonical perturbation method based on Hamilton-Jacobi theory, used together with Galerkin’s method, is employed to analyze the nonlinearly coupled transverse free oscillations of columns subjected to a constant end force. Integrals of motion, readily obtained from this type of analysis, are used to allow the analytical determination of the main ...
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Demonstration of an air column resonance with a corrugated tube.

The Journal of the Acoustical Society of America, 2010
Standing waves, or resonances, will occur in an open-ended tube when the air in the tube is excited at a particular frequency or its harmonics. The resonant frequencies are a function of the tube length. The first standing wave, fundamental mode or first harmonic, is set-up with antinodes at each end of the tube, as the air is free to move at the ends,
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PIV STUDY OF RESONANT AIR COLUMNS

Past, Present and Future Acoustics and EPSRC Day, 2023
A TONDDAST-NAVAEI, DB SHARP
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An archive of data from resonant column and cyclic torsional shear tests performed on Italian clays

Earthquake Spectra, 2021
Johann Facciorusso
exaly  

Effects of Particle Grading and Stress State on Strain-Nonlinearity of Shear Modulus and Damping Ratio of Sand Evaluated by Resonant-Column Testing

Journal of Earthquake Engineering, 2020
Kostas Senetakis, Haiwen Li
exaly