Results 261 to 270 of about 126,370 (292)

A simple approach for assessing the quality of bender elements

Géotechnique Letters
Bender elements are frequently used in geotechnical laboratories worldwide. In the first decades of introducing bender elements for soil testing, in the 1980s and 1990s, the quality of the bender elements was a main research topic. After noticeable findings about wiring, shielding, and other design features, the focus of the research moved towards ...
R. Shahgholian, A. Viana da Fonseca, C. Ferreira   +2 more
openaire   +1 more source

Interpretation of bender element tests

Géotechnique, 1995
VIGGIANI, GIULIA, Atkinson, JH
openaire   +4 more sources

Bender elements: bad source – good receiver

2008
Shear wave velocity measurement in the laboratory, by means of Bender Elements is becoming more and more popular for geotechnical characterization. The reasons of the increasing popularity of such method are well known and among the many the “apparent” simplicity of the testing method should be mentioned.
PALLARA O, MATTONE M, LO PRESTI, DIEGO CARLO   +2 more
openaire   +2 more sources

Measurement of material damping with bender elements in triaxial cell

2003
Abstract: This paper presents a method to measure the viscous damping ratio of soils in isotropic stress conditions using a triaxial cell equipped with piezoceramic bender elements. The technique is based on the determination of a frequency response spectrum of the soil specimen by means of a continuous sine excitation generated by the emitter element.
Karl, L., Haegeman, W., Pyl, L., Degrande, G.   +3 more
openaire   +2 more sources

Novel methods of bender element test analysis

2015
The complexity of bender element test interpretation iswell documented. For example the arrival of a compressionalwave at the receiver clouds the arrival of the true shearwave. The wave diffuses while travelling through the sample as the received signal is of lower magnitude than the transmitted signal.
O'Donovan, J., Marketos, G., O'Sullivan, C.   +2 more
openaire   +1 more source

The importance of coupling and sample geometry in bender element testing

2015
ABSTRACT This paper presents a study aiming to improve the quality and repeatability of shear wave velocity measurements by means of the bender element (BE) technique. For this purpose, studies were carried out to improve the contact between the bender elements and the specimen, namely by the use of a BE puncher and/or the use of an ...
C. Pereira, A. G. Correia, C. Ferreira, N. Araújo   +3 more
openaire   +1 more source

A comprehensive view of measuring soil stiffness with bender elements

2009
A laboratory experiment to determine the shear wave velocity of geomaterials by using bender elements has been reviewed. Problems associated with uniqueness and objectivity in judging correct arrival time and uniformity in interpretations are analyzed by using experimental results from a consolidation test on reconstituted clay samples.
Lohani T.N., Shibuya S.
openaire   +1 more source

Discussion: Interpretation of bender element tests

Géotechnique, 1997
J. C. Santamarina, M. A. Fam
openaire   +1 more source

The assessment of destructuration of bothkennar clay using bender elements

2006
Natural soft clays are structured' as a result of their history of deposition, cementing and aging. The natural clay possesses a higher void ratio and greater undrained strength than its reconstituted counterpart due to its structure, and thus exists outside the state boundary surface for the reconstituted material.
Sukolrat, J., Nash, D.F.T., Lings, M.L., Benahmed, Nadia   +3 more
openaire   +1 more source

A novel bender/extender element for soil testing

Géotechnique, 2001
Lings, ML, Greening, PD
openaire   +2 more sources