Dear Zuoyi Wang,


If you use interdigital transducers to generate surface acoustic wave, it is
easy to obtain this information placing two transducers facing each other
(emitter, receiver). On the oscilloscope, the signal is delayed of T and
knowing the distance between both transducers, you obtain the velocity.
An other method is to use a vribrometer laser, but you can use this method
until 40 MHz.

Philippe

#######################################################
Philippe HELIN, Ph.D.
LIMMS/CNRS.IIS
University of Tokyo
7-22-1 Roppongi, Minato-ku
Tokyo 106 Japan
Tel : (81) 3 3402-6231 ext. 2354
Fax : (81) 3 3470 5103
Email : philippe_helin@hotmail.com


>Dear experts:
>
>       Could you please tell me some detail on how to mesure surface
>acoustic wave velocity?  I am particularly interested in Pulse-Echo-Overlap
>method.  Certainly, suggestions on other methods are also welcome.
>
>      Thanks in advance for your help.
>
>
>Zuoyi Wang
>
>
>


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