Now showing items 1-10 of 265
Study of the elastic shear modulus of Bio Bio sand using bender elements in an oedometer
(American Society Testing Materials, 2017)
The objective of the paper is to study the shear stiffness of Bio Bio sand. To this end, a system to measure the travel time of shear waves in Bio Bio sand samples using bender elements was designed and setup in an adapted ...
P3L-3 Viscosity measurement of Newtonian liquids using the complex reflection coefficient
This work presents the implementation of the ultrasonic shear reflectance method for viscosity measurement of Newtonian liquids using wave mode conversion from longitudinal to shear waves and vice-versa. The method is based ...
The seismic SPT to determine the maximum shear modulus
This paper presents the first results of a system to carry out seismic SPT, which associates the up-hole seismic technique to the currently used SPT test. This hybrid test allows determining the maximum shear modulus (G ...
Deep shear wave velocity profiles of the Santiago Basin for evaluation of seismic response
Evaluation of the seismic response of the Santiago Basin requires a shear wave velocity model with vertical and lateral variations that may explain the site effects reported during the 2010 Maule Earthquake. In order to ...
Ultrasonic sensor for the presence of oily contaminants in water
(UNIV NAC COLOMBIA, FAC NAC MINASMEDELLIN, 2012)
The determination of the complex reflection coefficient of ultrasonic shear-waves at the solid-liquid interface is a technique employed for the measurement of the viscoelastic properties of liquids. An interesting property ...
Shear wave velocities beneath the eastern part of BrazilShear wave velocities beneath the eastern part of Brazil
(Instituto de Geofísica, 2012)
Do transience gravity waves in a shear flow break?
(John Wiley & Sons Ltd, 2008-07-10)
The propagation of transient gravity waves in a shear flow towards their critical levels is examined using a ray tracing approximation and a higher-degree (quasi-optic) approximation. Because of its transient forcing, the ...
Reduction of chaotic particle transport driven by drift waves in sheared flows
(AMER INST PHYSICS, 2008)
Investigations of chaotic particle transport by drift waves propagating in the edge plasma of tokamaks with poloidal zonal flow are described. For large aspect ratio tokamaks, the influence of radial electric field profiles ...