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Idealized Sine Wave Approach to Determine Arrival Times of Shear Wave Signals Using Bender Elements
Geotechnical Testing Journal, 2019Determining the small strain stiffness Gmax of soils in a laboratory is generally achieved using bender elements. Shear wave propagation is affected by the soil medium and boundary conditions causing distortion in output signals, which introduces error ...
Q. Khan, Sung-Woo Moon, T. Ku
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Numerical modelling of bender element test in soils
Measurement, 2020Abstract 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 ...
R. Ingale, A. Patel, A. Mandal
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Effect of bender element installation in clay samples
Géotechnique, 2010In 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
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Effect of Clamping and Damping on Piezoelectric Bender Elements
The Journal of the Acoustical Society of America, 1970Piezoelectric benders are commonly utilized for transducing elements in phonograph cartridges or reciprocally as emf-force devices. Their behavior in these applications has been well delineated in the literature. When the bender, used as a memory-storage element, is clamped and damped by an encapsulant, it exhibits anomalous behavior, which is not ...
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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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Time and frequency domain evaluation of bender element systems
Géotechnique, 2015Bender elements are used to measure the low-strain shear-wave velocity of soils in many geotechnical laboratories worldwide. Despite their popularity, the method remains without a standard, mainly owing to the difficulties in controlling the actual behaviour of the bender element inside the specimen.
J. F. Camacho-Tauta +3 more
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A simple approach for assessing the quality of bender elements
Géotechnique LettersBender 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 +2 more
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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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Interpretation of bender element tests
Géotechnique, 1995VIGGIANI, GIULIA, Atkinson, JH
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