Archives of Acoustics, 18, 4, pp. 539-551, 1993

Practical possibilities of more accurate velocity measurements of ultrasonic waves in liquids by means of the resonator method

A. Balcerzak
Institute of Fundamental Technological Research, Polish Academy of Sciences, 00-049 Warszawa, ul. Świętokrzyska 21
Poland

Z. Bazior
Institute of Fundamental Technological Research, Polish Academy of Sciences, 00-049 Warszawa, ul. Świętokrzyska 21
Poland

Z. Kozłowski
Institute of Fundamental Technological Research, Polish Academy of Sciences, 00-049 Warszawa, ul. Świętokrzyska 21
Poland

R Płowiec
Institute of Fundamental Technological Research, Polish Academy of Sciences, 00-049 Warszawa, ul. Świętokrzyska 21
Poland

A precise investigation of the dependence between the resonance frequencies and the frequency for the real resonator cell was carried out using automatic measurement equipment which works in the range of frequency 0.5-10 MHz. This experimental dependence was compared with the theoretical one for the ideal resonator cell. As a result, regularities were found which are important for more accurate velocity measurements in liquids in the whole frequency range used in the resonator method. It was pointed out how on the basis of these results the method of calculating the propagation velocity in the resonator method can be improved and its accuracy increased.
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