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Measurement of wave velocities and attenuation using an ultrasonic test system.

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Measurement of wave velocities and attenuation using an ultrasonic test system.

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dc.contributor.author Leong, Eng Choon.
dc.contributor.author Yeo, Sir Hoon.
dc.contributor.author Rahardjo, Harianto.
dc.date.accessioned 2011-12-08T09:06:29Z
dc.date.available 2011-12-08T09:06:29Z
dc.date.copyright 2004
dc.date.issued 2011-12-08
dc.identifier.citation Leong, E. C., Yeo, S. H., & Rahardjo, H. (2004). Measurement of Wave Velocities and Attenuation using an Ultrasonic Test System. Canadian Geotechnical Journal, 41(5), 844–860.
dc.identifier.uri http://hdl.handle.net/10220/7370
dc.description.abstract The use of ultrasonic testing to determine pulse velocities and small-strain elastic constants for rocks has been standardized in American Society for Testing and Materials (ASTM) standard D2845-95. However, the use of ultrasonic testing to determine pulse velocities and small-strain elastic constants of soils is less common, as soils have higher damping characteristics which result in measurement difficulty. The signal transmitted through soil is weak and very noisy. As a result, the signal must be properly processed to provide a reliable estimate of the wave travel time. In this paper, an ultrasonic test system consisting of compression and shear wave transducers, a pulser, and a data-acquisition system is evaluated for measurement of both compression and shear wave velocities. Among the specimens tested were fully saturated and unsaturated soil specimens. The effects of acoustic coupling and signal processing on the transmitted pulse were investigated. The strain levels associated with the determination of the wave velocities were also measured. Furthermore, a method for determining attenuation characteristics for soil specimens from the frequency spectra is suggested.
dc.language.iso en
dc.relation.ispartofseries Canadian geotechnical journal
dc.rights © 2004 Canadian Science Publishing
dc.subject DRNTU::Engineering::Civil engineering::Geotechnical.
dc.title Measurement of wave velocities and attenuation using an ultrasonic test system.
dc.type Journal Article
dc.contributor.school School of Civil and Environmental Engineering
dc.identifier.doi http://dx.doi.org/10.1139/t04-041
dc.description.version Accepted version

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