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 |
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 |
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DOI: |
中文关键词: 声学参数测量 强超声场 换能器振动系统 |
英文关键词: acoustic parameter measurement intensity ultrasonic field transducer system |
基金项目:国家自然科学青年基金 |
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中文摘要: |
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。 |
英文摘要: |
The 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. |
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