A Hydrostatic Pressure Resistant Flextensional Transducer

Since the hydrostatic pressure resistance ability of class III flextensional transducer is usually poorer, we did some researches on the common hydrostatic pressure resistance ability of deep water transducer to improve it. The hydrostatic pressure resistance ability of class III flextensional transducer can be improved that the way of overflow fills the acoustic compliance tube. With the simulating calculation of class III flextensional transducer using finite element software, a transducer prototype was made and a fitness to the transducer of small size acoustic compliance tube was designed. The conclusion is that the hydrostatic pressure resistance ability of acoustic compliance tube is over 3MPa. The transducer has two resonance peak at 760Hz and 2000Hz, with TVR 115dB and 125.1dB. TVR should be over 113dB between 680Hz and 3000Hz. The transducer still can work normally with hydrostatic pressure of 3MPa. The results showed that the hydrostatic pressure resistance ability of overflow class III flextensional transducer which fills the acoustic compliance tube was improved, and the transducer had the high-power transmitting ability in board band of frequencies.