WIDEBAND SINGLE CRYSTAL LONGITUDINAL TRANSDUCER FOR UNDERWATER SOUND
The piezoelectric single crystal has significant advantages including both high electromechanical coupling and piezoelectric coefficients.By use of four 33-mode single crystal pieces,a thin light beryllium alloy head mass and a thick heavy tungsten alloy tail mass can expand the bandwidth of the middle-frequency transducer.The one-fourth finite element model of transducer was set up with ANSYS software and the structure of the transducer was optimized.A final 9-element array was designed,fabricated and measured.The bandwidth of the array is 12kHz-40kHz,in which the ripple of the transmitting voltage response does not exceed +/-3.3dB.There are several conclusions from the research: the bandwidth of tonpilz transducers can be expanded by the use of single crystal pieces,beryllium alloy head mass and tungsten alloy tail mass;and it gives a method to achieve the broad-band projecting performance of middle-frequency transducers.
Single crystal Wideband Underwater transducer Finite element method
Kai ZHANG Dong HUANG Bing-rong CHEN Yi-zheng TANG
Hangzhou Applied Acoustics Research Institute, Hangzhou, 310000, China
国际会议
石家庄
英文
127-129
2019-11-01（万方平台首次上网日期，不代表论文的发表时间）