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声电转换
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     The converted electromagnetic wave characteristics of seismoelectric conversion effect in borehole
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     Research and applications of high powered acoustoelectric transducing materials
     大功率转换材料的研究及其应用
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     Research and Applications of Piezoelectric and Piezomagnetic Acoustoelectric Transducer Materials
     压与压磁转换材料的研究及应用
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In this paper,the preparations of piezoelectric and piezomagnetic materials for a-coustoelectric transducers are studied,And,their piezoelectric and piezomagnetic effects,elec-trostriction and magnetostriction as well as their applications are classified and compared. It is-pointed out that these two kinds of acoustoelectric materials can’t replace each other in some im-portant applications and will be longterm coexistence。

对应用于声电转换方面的两类材料──压电与压磁声电转换材料的制备作了研究,对它们的压电效应与压磁效应、电致伸缩与磁致伸缩及其应用作了归类比较。并且指出,在有些重要应用方面它们将长期共存及相互不可替代。

Some characteristics of acoustic array antennas constructed with different horns aretested. The measured antenna directivity patterns are compared with theoreticalpatterns.The effects of wave length , distance between horns,the number of horns andthe air temperature on directivity patterns are discussed.The measured directivitypattern of a 4×4 array basically agrees with the theoretical curve. The comparison ofdifferent types of horns shows that the piezoelectric ceramic tweeter has the bestconversion efficeincy,...

Some characteristics of acoustic array antennas constructed with different horns aretested. The measured antenna directivity patterns are compared with theoreticalpatterns.The effects of wave length , distance between horns,the number of horns andthe air temperature on directivity patterns are discussed.The measured directivitypattern of a 4×4 array basically agrees with the theoretical curve. The comparison ofdifferent types of horns shows that the piezoelectric ceramic tweeter has the bestconversion efficeincy, which is three times of the common horn′s. The reflecting hornYH 5-4 has a good ratio of performance to price,and is suitable for phased array antennamanufacture.

文章计算并测试了声雷达阵列式天线的波瓣特性,讨论了天线波瓣特性与波长、阵列喇叭数量、喇叭间距以及气温的关系。结果表明,实测的4×4阵列的波瓣特性和理论计算值基本相符.比较了用不同喇叭作的天线的性能,指出压电陶瓷高音喇叭的声电转换效率最高,1600Hz时是一般纸盆扬声器的3倍,是最佳换能器件;国产号筒式高音喇叭YH5-4性能价格比较好,适于声天线的制作。

The significance and action of high powered acoustoelectric transducing materials in fields of acoustics and electronic engineering are briefly related, Preparation and development of new type, highly performance materials are needed for manufacture and development of high powered acoustoelectric transducing devices. In this paper,related situations of high powered piezoelectric ceramics F 1 PZT,F 2 PZT,FD 3 PZT and FD 4 PZT preparated by present work are reported.

本文简要叙述了大功率声电转换材料在声学及电子工程领域中的意义和作用,论述研制和开发新型、高性能大功率声电转换材料是大功率声电转换器件研制和开发工作的需要,还介绍了作者研制的系列大功率压电陶瓷F1-PZT、F2-PZT、FD3-PZT及FD4-PZT的有关情况。

 
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