Research on the tangential polarized thin shell piezoelectriccylindrical tube hydrophone
TENG Duo*, WANG Yan, XIE Keke
(School of Marine Science and Technology, National Key Laboratory for Underwater Information Processing and Control, Northwestern Polytechnical University, Xi′an 710072, Shaanxi, China)
Abstract:
A high sensitivity hydrophone based on tangential polarized thin shell piezoelectric cylindrical tube was developed. Applying the membrane theory, the frequency equations were obtained from the geometrical equations, motion equations and piezoelectric equations. The vibrations of the tube was analyzed including the radially and longitudinal resonance frequency, and the influence of the tube′s configuration to its sensitivity was studied. The major performances of the hydrophone were predicted through finite element method. The corresponding tests of a hydrophone prototype showed the maximum sensitivity of -179.1 dB in the certain band.
KeyWords:
hydrophone; tangential polarization; thin shell piezoelectric cylindrical tube; finite element method; membrane theory
