Results 251 to 260 of about 4,303 (287)
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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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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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Experimental and Numerical Observations of the Frequency-Domain Method in Bender-Element Testing
Journal of Geotechnical and Geoenvironmental Engineering - ASCE, 2017AbstractIn bender-element (BE) testing, shear-wave velocities are measured using two main methods: time-domain analysis of vibration data from pulse excitation and frequency-domain analysis of vibration from sine-sweep excitation. The frequency-domain analysis can be performed automatically.
Javier Camacho-Tauta +2 more
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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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Interpretation of bender element tests
Géotechnique, 1995VIGGIANI, GIULIA, Atkinson, JH
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Haar Wavelet Transform for Arrival Time Identification in Bender Element Tests
Geotechnical Testing Journal, 2019Abstract The determination of shear wave velocity (Vs) using bender elements can be affected by the near-field effect. This phenomenon hinders the identification of the S-wave arrival time of an output signal. Multiple alternatives have been presented to counteract these effects, including the use of wavelet transforms during the last ...
Alfonso Fernández Lavín +1 more
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