无机材料学报Issue(7)：745-750,6.DOI:10.15541/jim20140601
压电复合材料用于透镜式聚焦换能器的研究
Properties of a Lens-focused Transducer Based on Piezoelectric Composites
摘要
Abstract
To broaden the bandwidth of focused transducer with suppressing the multimode coupling phenomenon, and improving the electro-acoustic conversion efficiency, 1-3 piezoelectric composites as the ultrasonic emission material was used to replace Pb-based lanthanum doped zirconate titanates ceramic. A new type of lens-focused transducer was designed and produced based on 1-3 piezoelectric composites. Through the comparative study of frequency characteristic, it is proved that the 1-3 piezoelectric composites lens-focused transducer can not only in-crease the bandwidth of the transducer which is 3.13 times of the one based on Pb-based lanthanum doped zirconate titanates, but also suppress the radial vibration obviously to obtain a single pure vibration modes. Besides, the elec-tro-acoustic conversion efficiency of the former lens-focused transducer is 1.88 times of the latter one. These results provide a theoretical and experimental foundation for the realization of ultrasonic transducer of high efficiency on reliability and stability.关键词
1-3型压电复合材料/聚焦换能器/声透镜/电声转换Key words
1-3 piezoelectric composites/focused transducer/acoustic lens/electro-acoustic conversion分类
化学化工引用本文复制引用
何敏,郝琦,王科鑫,曾德平,叶方伟,李发琪,王智彪,何虹莹..压电复合材料用于透镜式聚焦换能器的研究[J].无机材料学报,2015,(7):745-750,6.基金项目
国家自然科学基金委重大科学仪器设备研制专项(81127901) （81127901）
国家自然科学基金(81201102,11274404) （81201102,11274404）
国家重点基础研究发展计划(973项目,2011CB707900) （973项目,2011CB707900）
重庆市科技项目(2010BB5368) National Natural Science Foundation of China (81127901,81201102,11274404) （2010BB5368）
State Key Development Program for Basic Research of China (973 program,2011CB707900) （973 program,2011CB707900）
Science and Technology Project of Chongqing (2010BB5368) （2010BB5368）
