Capacitance Microphones for Measurement of Ultrasonic Properties of Solids
作者:
E. L. Meeks,
R. D. Peters,
R. T. Arnold,
期刊:
Review of Scientific Instruments
(AIP Available online 1971)
卷期:
Volume 42,
issue 10
页码: 1446-1449
ISSN:0034-6748
年代: 1971
DOI:10.1063/1.1684903
出版商: AIP
数据来源: AIP
摘要:
Two capacitive transducer designs have been used in this laboratory for amplitude measurements of longitudinal ultrasonic waves in solids. The designs are simple, can be fabricated easily, are rugged, and should prove to be a useful ultrasonic laboratory item. Each of the microphones can be conveniently altered to be used with a variety of specimen sizes, and displacement amplitudes as small as 10−14m have been measured for 30 MHz frequency longitudinal waves. As an example application of the transducer, measurement of phase shift upon reflection from an X‐cut quartz transducer bonded to an SrTiO3crystal is given.
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