Accession Number:

AD0742928

Title:

Compressional Wave Speed and Absorption Measurements in a Saturated Kaolinite-Water Artificial Sediment.

Descriptive Note:

Master's thesis,

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF

Personal Author(s):

Report Date:

1972-03-01

Pagination or Media Count:

40.0

Abstract:

The absorption coefficient for compressional waves in a water-saturated, kaolinite clay was measured in the frequency range 100 to 150 kHz using a pulse technique with spherically diverging waves. The measurement also permitted determination of the sound speed, Vp. For one condition of the clay with a 77 porosity, the sound speed was 1422 msec. The absorption coefficient, a, was found to be frequency dependent, satisfying the empirical relationship a 0.033 f dBm, f being the frequency in kHz. No dispersion of wave speed with frequency was observed. These results were used together with the results of dynamic shear rigidity modulus measurements made with a torsional wave viscoelastometer to calculate the complex Lame constants of a viscoelastic model. Author

Subject Categories:

  • Physical and Dynamic Oceanography
  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE