Phase and amplitude responses associated with the measurement of shear-wave velocity in sand by bender elements

J. Blewett, I. J. Blewett, P. K. Woodward

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

Shear-wave velocity measured by bender elements in laboratory sand samples is shown to be dependent upon the excitation frequency and exhibits a maximum velocity for a finite frequency. By comparing the relative effects of dispersion due to propagation of shear waves through sand and dispersion due to bender element performance within sand, we show that a combination of the two processes is required to explain the observations. The magnitude of the aggregate response of the bender elements and the sand implies that reliable shear-wave velocity results cannot be obtained from bender element tests without a prior knowledge of the frequency response of the entire system.

Original languageEnglish
Pages (from-to)1348-1357
Number of pages10
JournalCanadian Geotechnical Journal
Volume37
Issue number6
DOIs
Publication statusPublished - 2000

Keywords

  • Attenuation
  • Dispersion
  • Phase-sensitive detection
  • Sand
  • Shear-wave velocity

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