How Can I Build a Simple Ultrasonic Thickness Gauge?

[samani]

Homework Statement

I want to built a simple ultrasonic thickness gauge for my final project. I have already search in google about that simple electronic circuit but i can't found it and also i have already looking for tutorial video in youtube about how to built simple ultrasonic thickness gauge but the result about digital ultasonic thickness gauge in factory . Please, any suggestion ? (sorry, if any mistake in my words)

Homework Equations

for now, i don't have relevant equations

The Attempt at a Solution

I have already search the solution in google and youtube but i can't found the detailed solution (sorry, if any mistake in my words)

 

[lofgran]

You might find it helpful to study the theory behind quartz crystal microbalances (QCM), which are widely used in thin films to determine film thickness. They are based on the Saurbrey equation, which you can find more about on Wikipedia. Hope that helps...

 

[samani]

thank you for your suggestion :), i will study the theory behind quartz crystal microbalances (QCM),