A small volume thermodynamic system for B/A measurement.
A thermodynamic method capable of determining the B/A value of 4-ml sample volumes is described. The method involves a procedure in which the static pressure of the sample is altered in a short period of time, to approximate an adiabatic process, during which the ultrasonic velocity is measured. The velocity change so determined is used to calculate the B/A value. The B/A measurement error is less than 0.7%.
Zhang
J
J
Department of Electrical and Computer Engineering, University of Illinois, Urbana-Champaign 61801.
Dunn
F
F
D000162:Acoustics; D000818:Animals; D006801:Humans; D008962:Models, Theoretical; D012212:Rheology; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation; D013816:Thermodynamics; D014465:Ultrasonics