Results 241 to 250 of about 106,445 (292)

Numerical modelling of bender element test in soils

Measurement: Journal of the International Measurement Confederation, 2020
Abstract Shear and compression wave velocities (Vs and Vp, respectively) are considered to be very useful for determining various dynamic properties of soils such as small strain shear modulus, Gmax, elastic modulus, Emax and the Poisson’s ratio, ν. Moreover, the index as well as engineering properties of the soil mass can be directly or indirectly ...
Anjan Patel, Anirban Mandal
exaly   +2 more sources

Dynamic Multimodal Response of Bender Element Transmitter

Journal of Geotechnical and Geoenvironmental Engineering, 2021
AbstractThe response of a bender transmitter to sinusoidal excitations in air, liquids, and transparent soil is investigated using a novel laser vibrometer technique.
Muhammad Irfan, Ayan Sadhu, Giovanni Cascante, Dipanjan Basu   +3 more
openaire   +1 more source

Measurement Biases in the Bender Element Test

Journal of Geotechnical and Geoenvironmental Engineering, 2007
This paper reconsiders the signals that are transmitted in bender element tests and the associated transfer functions to identify the problems that bias the velocity (travel time) determination. The findings of the numerical and physical experiments show that errors appearing in the velocity estimation can be traced to (1) the near-field effect and (2)
Yan, WM, Wang, YH, Lo, KF, Dong, XB
openaire   +3 more sources

Analysis of Bender Element Tests

Geotechnical Testing Journal, 1998
Abstract A study is presented of potential errors in, and methods of interpreting, the results of cantilever-type, piezoceramic bender element tests for measuring the shear wave velocity of laboratory soil specimens. Interpretations based on the first direct arrival in the output signal are often masked by near-field effects and may be ...
R Arulnathan, RW Boulanger, MF Riemer
openaire   +1 more source

A Toolbox for the Automatic Interpretation of Bender Element Tests in Geomechanics

2022
The small strain shear modulus is an important characteristic of geomaterials that can be measured using bender element experiments. However, most conventional interpretation techniques are based on the visual observation of the output signal and are inherently subjective.
Ionuţ Dragoş Moldovan, Abdalla Almukashfi, António Gomes Correia   +2 more
openaire   +2 more sources

Bender Elements: Performance and Signal Interpretation

Journal of Geotechnical and Geoenvironmental Engineering, 2005
Bender elements are convenient shear wave transducers for instrumenting soil cells due to optimal soil-transducer coupling and compatible operating frequency. Experimental and analytical methods are implemented in this study to explore various aspects of bender element installations including: electromagnetic coupling prevention, directivity, resonant ...
Jong-Sub Lee, J. Carlos Santamarina
openaire   +1 more source

Instrumentation for bender element testing of soils

International Journal of Geotechnical Engineering, 2008
AbstractDetermination of shear wave velocity in sands is necessary for safety of various civil engineering structures. With this in view, earlier researchers have employed, mainly, resonant column and bender elements to determine this parameter. However, resonant column tests can only be performed in especially designed apparatus, which is not only ...
P. Bartake, A. Patel, D. Singh
openaire   +1 more source

On the performance of bender elements in triaxial tests

Géotechnique, 2012
This paper presents the results of a research programme in which the transfer functions of bender element/soil systems have been measured for various materials, set-ups and stress levels. The resulting database has allowed the characterisation of the inherent multi-vibrational nature of the system, and the interpretation challenges that this imposes ...
G. ALVARADO, M.R. COOP
openaire   +1 more source

Measuring Shear Wave Velocity Using Bender Elements

Geotechnical Testing Journal, 2005
Abstract The use of bender element to measure shear wave velocity is popular due to its simplicity. However, there are still some uncertainties in the interpretation of the bender element test. In this paper, the use of bender elements in the determination of shear wave velocities of dry, unsaturated, and saturated soil specimens is ...
Leong, Eng Choon, Yeo, Sir Hoon, Rahardjo, Harianto   +2 more
openaire   +2 more sources

Effect of bender element installation in clay samples

Géotechnique, 2010
In recent years, bender element (BE) testing has become a standard procedure used for the determination of the shear modulus of geomaterials. Before the test is conducted, the BE transducers are plugged on both ends of a soil sample. The installation of the BEs is likely to cause disturbance to the soil sample.
K.H. CHAN, T. BOONYATEE, T. MITACHI
openaire   +1 more source