using thermal camera for thickness measurement??

No you cant 

Based on thermal analysis, you can only guess that the pipe/tank is losing thickness due to the presence of hot or cold spots. 

Ultrasonic thickness testing is widely used in industry to measure thickness of pipes, tanks, conveyor belts and other metallic surfaces.

"Based on thermal analysis, you can only guess that the pipe/tank is losing thickness due to the presence of hot or cold spots."

If there is no insulation that could affect the thermal images, then would a thermal scan save time to locate suspect areas for ultrasound thickness measurement?

Walt

 

You cannot really use a thermal camera to measure thickness. You can measure temperature, that’s what the camera is designed for. 

 

There is of course a correlation between the surface temperature, and the thickness, so in theory you could calculate the thickness. The problem with this is that you have to make some pretty big assumptions and use steady state values in conditions where they don’t really apply. This is somewhat dangerous as there will be significant errors. 

 

I would use the camera as a screening tool to select the areas where you will conduct thickness measurements.

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