A multilayer method for linearity determination of the PVDF hydrophone for pressures up to 2.3 MPa

Downloads

Authors

  • L. FILIPCZYŃSKI Department of Ultrasound, Polish Academy of Sciences Institute of Fundamental Technological Research, Poland
  • J. ETIENNE Department of Ultrasound, Polish Academy of Sciences Institute of Fundamental Technological Research, Poland
  • T. KUJAWSKA Department of Ultrasound, Polish Academy of Sciences Institute of Fundamental Technological Research, Poland
  • R. TYMKIEWICZ Department of Ultrasound, Polish Academy of Sciences Institute of Fundamental Technological Research, Poland
  • J. WÓJCIK Department of Ultrasound, Polish Academy of Sciences Institute of Fundamental Technological Research, Poland

Abstract

A new method of linearity measurements of a PVDF membrane hydrophone was elaborated. High pressure pulses up to 6 MPa were obtained in the focus of a concave PZT transducer with the frequency of 3 MHz. The method is based on the pressure decrease of these pulses transmitted through metal layers with known acoustic impedances, immersed in water. In this way one obtained pressure changes at constant shapes (spectrum) of the pulses which were measured by means of the hydropbone under investigation. The measurement results confirmed the linearity of the hydrophone up to pressures equal to 2.3 MPa. Correlation coefficients of 5 measured relations were in average equal to r = 0.994.

References

[1] L. FILIPCZYŃSKI, J. ETIENNE, G. ŁYPACEWICZ, T. WASZCZUK, Measurement technique of shock wave pulses at extremely high pressures, Archives of Acoustics, 21, 37-51, 1996.

[2] J.H. KRAUTKRAMMER, Ultrasonic material testing, Springer Verlag, Berlin 1990.

[3] S. MEEKS, R. TING, The evaluation of PVF2 for underwater shock-wave sensor application, J. Acoust. Soc. Am., 75, 1010-1012, 1984.

Most read articles by the same author(s)

<< < 1 2 3 > >>