Title :
The determination of the viscoelastic properties of liquid materials at ultrasonic frequencies by CW mode impedance measurements
Author :
Deblock, Yves ; Lefebvre, Fabrice ; Radziszewski, Edouard ; Nongaillard, Bertrand
Author_Institution :
IEMN-DOAE, Villeneuve d´´Ascq, France
fDate :
6/1/1998 12:00:00 AM
Abstract :
A method is described for measuring shear mechanical properties of liquids at ultrasonic frequencies. The method is based on the process of the electrical impedance of a sensor in contact with the liquid. The sensor is composed of a piezoelectric transducer bonded to a delay line. The process determines the complex reflection coefficient of shear waves reflecting from the delay line-liquid interface, and the mechanical impedance is deduced. Experimental determination of dynamic shear properties of a series of saccharose solutions is presented as an example of the method
Keywords :
acoustic impedance; electric impedance; ultrasonic delay lines; ultrasonic measurement; viscoelasticity; viscosity measurement; CW mode impedance measurements; complex reflection coefficient; delay line bonded transducer; delay line-liquid interface; dynamic viscosity; electrical impedance; liquid materials; piezoelectric transducer; saccharose solutions; shear mechanical properties; shear waves; ultrasonic frequencies; viscoelastic properties; Delay lines; Elasticity; Frequency measurement; Impedance; Liquids; Mechanical factors; Mechanical sensors; Mechanical variables measurement; Ultrasonic variables measurement; Viscosity;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
