B1瓦特计测量声功率方法的分析和简化  

Investigation and simplification of watt meter method for measuring output acoustic power in intensity ultrasonic field

作　　者：颜忠余[1] 方启平[1] 黄金兰 何北星[1] 林仲茂[1] 

机构地区：[1]中国科学院声学研究所

出　　处：《声学技术》1996年第4期170-172,共3页Technical Acoustics

基　　金：国家自然科学青年基金

摘　　要：本文给出郎之万Ｌａｎｇｅｖｉｎ型换能器及变幅杆振动节点、腹点处振幅比随负载的变化情况，分析了瓦特计法测量声功率本身存在的理论偏差，并给出了两性能相同的换能器对接系统的实验结果，表明这种方法在轻负载（不大于水负载）测量中的准确性。he distribution of vibration velocity amplitude in transducer system changes with loads. There existed theoretical errors in Watt meter method for measuring output acoustic power of Langevin type transducer. The experimental results about clamped transducer system were given. It pointed out that the method is effective to intensity ultrasonic processing in liquid media. This paper also proposed a more convenient method for engineering measurement.

关 键 词：声功率 测量 瓦特计 

分 类 号：TB524[理学—物理]