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Ultrasonic Thickness Measurement
Sep 28, 2018

Ultrasonic thickness measurement

Let's talk about the following small series, the application of ultrasonic thickness measurement

Ultrasonic thickness measurement is a mature high-tech in the industrial field. Its biggest advantage is that the detection is safe, reliable and accurate, and it can be patrolled in the running state for testing. Ultrasonic thickness gauges are divided according to the working principle: resonance method, interference method and pulse reflection method.

Several kinds of instruments, because the pulse reflection method does not involve the resonance mechanism, and the surface roughness of the measured object is not closely related, so the ultrasonic pulse thickness gauge is the most popular instrument. The ultrasonic thickness gauge mainly consists of a main part and a probe. The host circuit includes a transmitting circuit, a receiving circuit and a counting display circuit. The high-voltage shock wave generated by the transmitting circuit excites the probe to generate an ultrasonic transmitting pulse wave. The pulse wave is received by the receiving circuit after being reflected by the medium interface, and is processed by the single-chip microcomputer. The liquid crystal display displays the thickness value, which is mainly obtained by multiplying the propagation speed of the acoustic wave in the sample by half the time passed through the sample.