Results 261 to 270 of about 75,682 (299)

Difference between current and voltage measurements in resonant-column testing

Canadian Geotechnical Journal, 2003
The resonant-column test is one of the most common procedures for dynamic characterization of soils (American Society for Testing and Materials standard). The test procedures require the measurement of the current flowing through the driving coils. In many cases, however, the input voltage has been measured and the results analyzed as a traditional ...
Giovanni Cascante, John Vanderkooy, Wilson Chung   +2 more
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Two Bender Receivers Frequency Domain Analysis in Resonant Column Tests

Advances in Soil Dynamics and Foundation Engineering, 2014
The installation of bender elements (BE) in different geotechnical testing devices has been increasing in recent years. One of the most widespread combinations in this matter is the use of BE in resonant-column (RC) equipment. Taking into account that the piezoceramic elements can work alternatively as a transmitter or as a receiver, a complementary ...
Javier Camacho-Tauta, Jaime A. Santos, Antönio Viana da Fonseca   +2 more
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Strain Measures for Transfer Function Approaches to Resonant Column Testing

Geotechnical Testing Journal, 2013
Abstract This paper presents strain measures to accompany a recently developed transfer function approach for resonant column testing of soils using a free-free apparatus. Although a number of past studies have proposed the use of random excitation or transfer functions in various forms, the new approach is unique in that the transfer ...
Ashlock, Jeramy, Drnevich, Vincent P., Pak, Ronald Y. S.   +2 more
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Evaluation of Dynamic Properties of Sands by Resonant Column Testing

Geotechnical Testing Journal, 1984
Abstract Torsional resonant column tests were performed on Monterey No. 0 sand of 60% relative density under confining pressures ranging from 10 to 300 kPa to evaluate the dynamic properties of the sand. Both solid and hollow cylindrical specimens were used in testing, and shear moduli and damping ratios were determined for cyclic shear ...
RM Chung, FY Yokel, VP Drnevich
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Resonant Column Test for Unsaturated Soils With Suction–Saturation Control

Geotechnical Testing Journal, 2011
Abstract Comprehensive characterization of the small strain shear modulus Gmax of an unsaturated soil specimen during hydraulic hysteresis requires precise control of the stress state, matric suction, degree of saturation, as well as knowledge of the void ratio.
Ali Khosravi, John S. McCartney
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Effect of sample torsional stiffness on resonant column test results

Canadian Geotechnical Journal, 2007
A number of resonant column tests were conducted in torsion on aluminium cylindrical bars. By changing the length to diameter ratio of these specimens, the resonant frequency was varied between 52 and 332 Hz. The values of the shear wave velocity (VS) and damping ratio (D) determined from these tests were found to remain acceptable up to a resonant ...
Kumar, Jyant, Clayton, C.R.I.
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Effect of Specimen Coupling on the Torsional Resonant Column Test

Geotechnical Testing Journal, 2013
Abstract The torsional resonant column is used to measure dynamic properties of soils. For this purpose, a sinusoidal torque is applied on a cylindrical specimen. The response of the specimen is used to derive the shear modulus and damping ratio of the specimen as functions of the induced shearing strain amplitude.
M. Picornell, S. Nazarian, A. Y. Almadhoun   +2 more
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Preloading Effects on Dynamic Sand Behavior by Resonant Column Tests

2011
Gegenstand der Arbeit ist die Untersuchung des Einflusses von zyklischen und dynamischen Vorbelastungen auf das dynamische Verhalten von Berliner Sand. Hierzu wurden der Schubmodul und die Dämpfung in Resonant Column Versuchen ermittelt. Darüber hinaus wird eine neue Methode zur Kalibrierung von Resonant Column Geräten des Stokoe Typs vorgestellt.
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Dynamic properties of an undisturbed clay from resonant column tests

2010
The dynamic properties of clay deposits under seismic or wave loading conditions must be well understood to assure dynamic stability of structures founded on such soil. The dynamic shear modulus and damping appear to be a complex function of many variables, and a wide range of values have been reported in the literature.
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Exploration of a mechanistic model for the quantification of the resilient modulus using free-free resonant column testing

Road Materials and Pavement Design, 2021
Vicente Mercado, Sang Ick Lee, Luis Fuentes   +2 more
exaly