Results 251 to 260 of about 106,992 (298)

Resonant Column Testing of Frozen Ottawa Sand

Geotechnical Testing Journal, 1987
Abstract The unique properties of frozen soils have posed special problems for engineers seeking to install stable structures in cold climates. Foundations, pipelines, and other structures subjected to high-frequency low-amplitude vibrations present special problems to the designer even when construction occurs in nonfrozen ground.
PJ Bosscher, DL Nelson
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Internal Resonances of a Discharge Column

Journal of Applied Physics, 1964
Dipole resonance of a cold plasma column can be predicted quite simply and observed experimentally. It is normally accompanied, however, by a series of subsidiary resonances. These have recently been explained phenomenologically as depending on nonuniform electron density and nonzero electron temperature for their existence.
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Parametric resonance in an oscillating water column

Journal of Engineering Mathematics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Olvera, Arturo, Prado, Esteban, Czitrom, Steven   +2 more
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Resonances in a Cylindrical Plasma Column (Correspondence)

IEEE Transactions on Microwave Theory and Techniques, 1962
A plasma column irradiated by an electromagnetic wave which has its electric vector and direction of propagation perpendicular to the axis of the tube exhibits Tonks-Dattner resonances in its absorption pattern when the electron density in the column is varied.
J. Willis, I. Petroff
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Resonant-Column Apparatus for Coarse-Grained Materials

Geotechnical Testing Journal, 1985
Abstract To investigate the low-strain dynamic properties of soils with grain size up to 25 mm (1 in.), a resonant column apparatus for specimens of 150 mm (6 in.) diameter and 450 mm (18 in.) height has been developed. Fine-grained materials can be tested using smaller specimens of at least 50 mm (2 in.) diameter.
C Heiniger, JA Studer
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Periodic Shock Waves in Resonating Gas Columns

The Journal of the Acoustical Society of America, 1960
When an oscillating piston forces the enclosed gas in a Kundt tube to vibrate with a finite amplitude near an acoustic resonance frequency of the gas column, shock waves are generated which travel periodically back and forth in the tube. There is also heating of the gas and a rise in its mean pressure.
R. Alfred Saenger, George E. Hudson
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The Ultrasonic Interferometer with Resonant Liquid Column

Proceedings of the IRE, 1948
The ultrasonic interferometer is simple in construction and operation, and yields accurate and consistent data. From these data, one can readily determine the velocity of sound in a liquid with high accuracy. Formerly, the absorption of sound in the liquid and the coefficient of reflection at the reflector surface has been obtained through a ...
F.E. Fox, J.L. Hunter
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Energy-Injecting Virtual Mass Resonant Column System

Journal of Geotechnical and Geoenvironmental Engineering, 1998
An innovative resonant column control system is introduced. The system is based on the concepts of energy injection and virtual mass. A unique feature of the system is that it allows the user to specify the resonant frequency and vibrating amplitude for a specimen of unknown mechanical properties. In the system a steady state vibration is maintained by
Li, XS, Yang, WL, Shen, CK, Wang, WC
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Resonant Column Tests on Partially Saturated Sands

Geotechnical Testing Journal, 1991
Abstract This paper describes the measurement of the influence of capillary effects on the dynamic shear modulus of partially saturated sands. A Hall-type resonant column apparatus was used to perform the experiments. The materials tested included natural angular and subrounded sands, angular and subrounded sands with specified ...
X Qian, DH Gray, RD Woods
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Hydrodynamics of resonance oscillations of columns of inelastic particles

Physical Review E, 1999
We study oscillations of a one-dimensional (1D) column of N slightly inelastic particles, produced by a piston vibrating at one end of a closed tube. It is found that for large enough vibrational amplitudes of the piston, the column oscillates periodically with the period equal to the vibrational period.
A, Goldshtein, A, Alexeev, M, Shapiro
openaire   +2 more sources