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

A note on the measurement of travel times using bender and extender elements
A note on the measurement of travel times using bender and extender elements
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.
0267-7261
630-634
Kumar, Jyant
c70d5995-3239-4de7-8ff1-44cf50fa4b2e
Madhusudhan, B.N.
e139e3d3-2992-4579-b3f0-4eec3ddae98c
Kumar, Jyant
c70d5995-3239-4de7-8ff1-44cf50fa4b2e
Madhusudhan, B.N.
e139e3d3-2992-4579-b3f0-4eec3ddae98c

Kumar, Jyant and Madhusudhan, B.N. (2010) A note on the measurement of travel times using bender and extender elements. Soil Dynamics and Earthquake Engineering, 30 (7), 630-634. (doi:10.1016/j.soildyn.2010.02.003).

Record type: Article

Abstract

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.

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Published date: July 2010
Organisations: Infrastructure Group

Identifiers

Local EPrints ID: 400453
URI: http://eprints.soton.ac.uk/id/eprint/400453
ISSN: 0267-7261
PURE UUID: bf04df72-ec7e-442a-b252-be6a06937531
ORCID for B.N. Madhusudhan: ORCID iD orcid.org/0000-0002-2570-5934

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Date deposited: 19 Sep 2016 08:23
Last modified: 01 Oct 2019 00:35

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