WIDE BANDWIDTH MEASUREMENTS OF ULTRASOUND VELOCITY AND ATTENUATION IN POLYSTYRENE SUSPENSIONS

WIDE BANDWIDTH MEASUREMENTS OF ULTRASOUND VELOCITY AND ATTENUATION IN POLYSTYRENE SUSPENSIONS

A wide bandwidth near-plane-wave acoustic spectrometer has been used for the measurement of ultrasonic velocity and attenuation as a function of frequency (2MHz-55MHz) in monodisperse polystyrene suspensions. Particle sizes ranged from 200 nm to 615 nm diameter and volume fractions from 5.6% to 12.1...

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Veröffentlicht in:Nondestructive testing and evaluation 1992-07, Vol.10 (1), p.55-65
Hauptverfasser: HOLMES, A.K., CHALLIS, R.E., WEDLOCK, D.J.
Format: Artikel
Sprache:eng
Schlagworte:
colloidal system
polystyrene suspensions
ultrasound attenuation
Ultrasound velocity
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Zusammenfassung:A wide bandwidth near-plane-wave acoustic spectrometer has been used for the measurement of ultrasonic velocity and attenuation as a function of frequency (2MHz-55MHz) in monodisperse polystyrene suspensions. Particle sizes ranged from 200 nm to 615 nm diameter and volume fractions from 5.6% to 12.1%. Results have been compared with a number of theoretical models; the most significant agreement was obtained between our measured data and the theoretical formulations of Allegra and Hawley [9].
ISSN:1058-9759
1477-2671
DOI:10.1080/10589759208952782