Results 261 to 270 of about 79,313 (301)
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Analysis of Bender Element Tests
Geotechnical Testing Journal, 1998Abstract 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
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Instrumentation for bender element testing of soils
International Journal of Geotechnical Engineering, 2008AbstractDetermination 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
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On the performance of bender elements in triaxial tests
Géotechnique, 2012This 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
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Characteristics of meta-kaolin geopolymer Bender-Element (BE) test
Materials Today: Proceedings, 2018Abstract Bender element (BE) test is a non-destructive test and is commonly used as an ultrasonic shear wave (S-wave) technique for determining the stiffness of materials. In this research, the ultrasonic shear wave was measured by using the piezoceramic BE in order to monitor the setting and the hardening process of meta-kaolin based geopolymer (MKG)
Keeratikan Piriyakul +1 more
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Determination of the Material Damping Ratio with the Bender Element Test
Journal of Geotechnical and Geoenvironmental Engineering, 2008The bender element test has shown to be a reliable tool to determine the shear wave velocity. This paper aims to extend the bender element technique to also measure the material damping ratio in a triaxial cell. Three different interpretation techniques are developed for this purpose. The first technique uses a modal test of a cylindrical soil specimen
Lutz Karl +3 more
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Bender Element Testing and Discrete Element Modeling of Shear Wave in Granular Media
IFCEE 2015, 2015Shear wave velocity of granular materials is often measured by bender elements in laboratory to determine its engineering properties. However, the accurate interpretation of measured wave propagation can be challenging which requires better understanding of bender element and soil particle interactions, and shear wave propagation in granular materials.
Asheesh Pradhan, Xinbao Yu
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Automatic Shear Wave Velocity Estimation in Bender Element Testing
Geotechnical Testing Journal, 2016Abstract Dynamic properties of soils, such as shear wave velocity and damping, are some of critical parameters in the design of civil infrastructures subjected to vibrations from earthquakes and machine foundations. Bender element (BE) testing is used in the laboratory to determine shear wave velocity; however, there is no standard ...
Finas, Mathieu +3 more
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The importance of coupling and sample geometry in bender element testing
2015ABSTRACT 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 +3 more
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SHEAR WAVE VELOCITY BY TSP APPLIED BENDER ELEMENT TEST IN SAND
Doboku Gakkai Ronbunshuu C, 2006ベンダーエレメント試験における送信波と受信波の関係は試験装置系のインパルス応答に支配されるとの考えから，時間引き延ばしパルス (Time Stretched Pulse: TSP) を利用してインパルス応答を求める手法をベンダーエレメント試験に適用することを試みている．豊浦砂を用いた実験により，求めたインパルス応答はその応答長よりも長い波長の矩形波を送信波として用いたベンダーエレメント試験の受信波形と近似すること，インパルス応答から走時法により決定したせん断波速度は従来の方法と近似することを示している．また，インパルス応答における振動数毎の位相差から求めたせん断波の位相速度が振動数に依存する分散性について示している．
Toshihiro OGINO +4 more
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Interpretation of bender element tests
Géotechnique, 1995VIGGIANI, GIULIA, Atkinson, JH
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