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A note on the measurement of travel times using bender and extender elements

Kumar, Jyant and Madhusudhan, BN (2010) A note on the measurement of travel times using bender and extender elements. In: Soil Dynamics and Earthquake Engineering, 30 (7). pp. 630-634.

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Official URL: http://dx.doi.org/10.1016/j.soildyn.2010.02.003


By using the bender and extender elements tests, the travel times of the shear (S) and the primary (P) waves were measured for dry sand samples at different relative densities and effective confining pressures. Three methods of interpretations, namely, (i) the first time of arrival, (ii) the first peak to peak, and (iii) the cross-correlation method, were employed. All the methods provide almost a unique answer associated with the P-wave measurements. On contrary, a difference was noted in the arrival times obtained from the different methods for the S-wave due to the near field effect. The resonant column tests in the torsional mode were also performed to check indirectly the travel time of the shear wave. The study reveals that as compared to the S-wave, it is more reliable to depend on the arrival times’ measurement for the P-wave.

Item Type: Journal Article
Publication: Soil Dynamics and Earthquake Engineering
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Soil dynamics;Elasticity;Laboratory tests;Sands;Shear modulus.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 14 Jul 2010 05:24
Last Modified: 19 Sep 2010 06:10
URI: http://eprints.iisc.ac.in/id/eprint/28901

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