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B1 瓦特计测量声功率方法的分析和简化
引用本文:颜忠余,方启平,黄金兰,何北星,林仲茂.B1 瓦特计测量声功率方法的分析和简化[J].声学技术,1996(4):1900/6/18-172.
作者姓名:颜忠余  方启平  黄金兰  何北星  林仲茂
作者单位:中国科学院声学研究所
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,提出工程上简化的测量方法

关 键 词:声学参数测量,强超声场,换能器振动系统

Investigation and simplification of watt meter method for measuring output acoustic power in intensity ultrasonic field
YAN Zhongyu,FANG Qiping,HUANG Jinlan,HE Beixing and LIN Zhongmao.Investigation and simplification of watt meter method for measuring output acoustic power in intensity ultrasonic field[J].Technical Acoustics,1996(4):1900/6/18-172.
Authors:YAN Zhongyu  FANG Qiping  HUANG Jinlan  HE Beixing and LIN Zhongmao
Affiliation:Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, P. R. China;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, P. R. China;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, P. R. China;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, P. R. China;Institute of Acoustics, Chinese Academy of Sciences, Beijing 100080, P. R. China
Abstract: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.
Keywords:acoustic parameter measurement  intensity ultrasonic field  transducer system  
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