传感技术学报2016，Vol.29Issue(5)：665-669,5.DOI:10.3969/j.issn.1004-1699.2016.05.007
一种高频宽带水声换能器的研制
Research of a High Frequency Broadband Underwater Acoustic Transducer
摘要
Abstract
A kind of wide band,high frequency piezoelectric composite circular array underwater acoustic transducer is developed. The wide Frequency band of the transducer is achieved by using the two methods of reducing the mechanical quality factor Qm val-ue and multi-mode coupling vibration of the piezoelectric material. Through the radial cutting of the piezoelectric ceramic ring and pouring the epoxy resin in the cutting gap,The piezoelectric composite ring was obtained. Later,Two piezoelectric composite ring with different wall thickness is axially stacked to form a sensing element,leading out the wire of the electrode, and the transducer is got. By using ANSYS software to simulate the structure,the relationship of the resonant fre-quency and the bandwidth of the sensitive element with thickness of the piezoelectric ceramic ring,the height and the average radius of the ceramic ring are obtained. Two piezoelectric composites ring,which are obtained from the optimal parameters,are axially stacked and fabricated to get the transducer. It is tested that the transducer has an obvious dual mode coupling vibration,the resonant frequency of the transducer is 375 kHz,It's-3 dB bandwidth is 90 kHz,the maximum transmission voltage is 148 dB. The design target of high frequency,broadband,and horizon-tal omnidirectional transmitting acoustic wave is realized.关键词
水声换能器/宽带/复合材料/圆环Key words
underwater acoustic transducer/broadband/composite material/ring.分类
信息技术与安全科学引用本文复制引用
王宏伟..一种高频宽带水声换能器的研制[J].传感技术学报,2016,29(5):665-669,5.基金项目
国家自然科学基金项目(614710470) （614710470）
北京市自然科学基金重点项目(B类)(KZ201411232037) （B类）
