Model and measurements of the electrical input impedance of a plate-liquid-plate acoustic resonator

• Published in: IEEE transactions on ultrasonics, ferroelectrics, and frequency control Vol. 48; no. 3; pp. 838 - 843
• Main Authors: Padilla, F., Gindre, M., Le Huerou, J.-Y.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.05.2001; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Acoustic measurements; Acoustic transducers; Acoustical measurements and instrumentation; Acoustics; Analytical models; Applied sciences; Attenuation; Bandwidth; Circuit properties; Electric Impedance; Electric variables measurement; Electric, optical and optoelectronic circuits; Electronic circuits; Electronics; Exact sciences and technology; Frequency; Fundamental areas of phenomenology (including applications); Impedance measurement; Impulse transducers; Liquids; Models, Theoretical; Oscillators, pulse generators, and function generators; Oscillators, resonators, synthetizers; Physics; Piezoelectric transducers; Transduction; acoustical devices for the generation and reproduction of sound; Input impedance; Liquid; Electrical measurement; Analytical method; Acoustic resonator; Acoustics; Measurement method; Experimental study; Sound velocity; Acoustic impedance; Electrical impedance; Plate
• ISSN: 0885-3010; 1525-8955
• DOI: 10.1109/58.920719

A plate-liquid-plate acoustic resonator is used to measure the acoustic velocity of liquids. An analytical model of the electrical input impedance of the resonator is proposed. Theoretical results are compared with experimental measurements using reference liquids. Accuracy of the sound velocity calculation is found to be better than 1%. Finally, factors limiting the achievable accuracy are discussed.