Wspólnotowy Serwis Informacyjny Badan i Rozwoju - CORDIS

Wheel probe scanning system

The typical ultrasonic probes used for the thickness measurement of steel plates, similar to those used in aboveground storage tanks, use a gel (or water) couplant to carry the UT signal from the transducer to the steel specimen. If there isn't enough couplant to carry the signal, the sensor will fail to gather the information correctly. The transducers are often attached to water irrigation systems that flood the steel plate with copious amounts of water as the transducer is dragged along the plate. This leads to an abnormal amount of wear in the transducer, and leaves the test-piece covered in water or gel couplant. A vacuum based recovery system is typically used to collect the couplant.

Sonatest have developed a wheel probe, which consists of a UT sensor housed within a water filled rubber tyre. The tyre material is designed to act as a couplant, without the need to irrigate the sample with couplant. This removes the need to flood the plate, and eliminates the need to use a vacuum recovery system. The wear and tear on the probe is also reduced.

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5,Kanari 5 Glyka-Nera
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