I am trying to create a set-up where I can radially vibrate a 1x1 cm sample using a piezoelectric disc transducer. I know that at the $f_{min}$ of a PZT transducer, for the disc geometry, there is a radial vibration. How can I tune this vibration if I want to vibrate my sample radially at different frequencies?
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You might want to take a look at this post. http://engineering.stackexchange.com/questions/1883/what-is-radial-and-thickness-mode-vibration-in-a-piezo-electric-ceramic-disc-tra – Mahendra Gunawardena Jun 16 '15 at 22:58
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Sorry for my ignorance on this topic,but what is the sample made out of. It is metal. Also you might want to look at this link too. http://engineering.stackexchange.com/questions/2695/can-i-use-a-ultrasound-sensor-to-measure-water-level/2697#2697 – Mahendra Gunawardena Jun 18 '15 at 00:50