What type of probe used in Ultrasonic Test for measuring thickness of a plate?

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Accepted Answer

Ultrasonic thickness measurement uses a variety of probes depending on the material and thickness of the plate.

Common probes include single element, dual element, and delay line probes.
Single element probes are used for thin materials and have a high frequency.
Dual element probes are used for thicker materials and have a lower frequency.
Delay line probes are used for high-temperature applications and have a delay line to protect the probe from heat damage.
The choice of probe depends on the material being tested and the required accuracy of the measurement.

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