Theoretical and experimental study of ultrasonic attenuation in inhomogeneous media: application to grain size and volume fraction measurements

Author

Meulen, F. Vander ; Feuillard, G. ; Matar, O. Bou ; Lethiecq, M.

Author_Institution

LUSSI-EIVL, Blois, France

Volume

1

fYear

2001

fDate

2001

Firstpage

713

Abstract

Attenuation in suspensions is studied theoretically and experimentally, in order to evaluate the influence of parameters such as granulometric dispersion of the scatterers, acoustic contrast and volume fraction. As expected, attenuation magnitude appears mainly due to volume fraction while the general behavior of attenuation depends on the density and compressibility contrasts between particles and fluid. It is shown that multiple scattering produces a nonmonotonous behavior of attenuation versus frequency and that attenuation reaches a maximum, the frequency position of which is related to the average and standard deviation of scatterer size. Multiple scattering theories are then fitted to experimental data in order to obtain average grain size

Keywords

grain size; inhomogeneous media; suspensions; ultrasonic absorption; ultrasonic measurement; ultrasonic scattering; acoustic contrast; compressibility; density; grain size measurement; granulometric dispersion; inhomogeneous medium; multiple scattering; particle suspension; ultrasonic attenuation; volume fraction measurement; Acoustic measurements; Acoustic scattering; Attenuation measurement; Equations; Frequency; Grain size; Mechanical factors; Nonhomogeneous media; Particle scattering; Suspensions;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2001 IEEE

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-7177-1

Type

conf

DOI

10.1109/ULTSYM.2001.991825

Filename

991825