A method for measuring the change of ultrasound velocity in a liquid
作者:
Kohji Toda,
Heijiro Urabe,
期刊:
Journal of Applied Physics
(AIP Available online 1982)
卷期:
Volume 53,
issue 1
页码: 194-196
ISSN:0021-8979
年代: 1982
DOI:10.1063/1.331583
出版商: AIP
数据来源: AIP
摘要:
A method for measuring the change of sound velocity from a reference state in a liquid is described. Two interdigitial transducers on a piezoelectric substrate are in contact with the liquid, and are used as an input and an output transducer for constructing a liquid delay device. The phase difference between an input and a delayed output signal is detected as a dc voltage via a phase comparating circuit. The temperature dependence of the sound velocity in water, measured by the present method, agrees well with the published data. The influence of hydrostatic pressure on the sound velocity in water is given.
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