Measurement of moving speed using a leaky Lamb wave device

被引：0
|
作者：
Fujita, T. [1 ]
Toda, K. [1 ]
机构：
[1] Dept. of Elec. and Electronic Eng., National Defense Academy, Hashirimizu, Yokosuka 239-8686, Japan
来源：
Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers | 2001年 / 40卷 / 9 B期
关键词：
Ceramic materials - Doppler effect - Frequency shift keying - Interfaces (materials) - Light reflection - Speed - Ultrasonic waves;
D O I：
10.1143/jjap.40.5731
中图分类号：
学科分类号：
摘要：
A technique for measuring the moving speed of a tested object is described using a leaky Lamb wave device composed of two interdigital transducers (IDTs). The IDT on a thin piezoelectric ceramic plate radiates as an ultrasound beam into a liquid and also operates as a detector of the ultrasound signal reflected from a moving medium, at a liquid-solid interface. The delayed output has a frequency shift via a Doppler effect, corresponding to the moving speed of the reflection object. Basic performances of the leaky Lamb wave device and the measured results of the moving speed of a metal disk are presented.
引用
收藏
页码：5731 / 5734
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