Ultrasonic Testing (UT)

In Ultrasonic Testing (UT), high-frequency sound waves, created by a vibrated crystal in probe, are transmitted into a material to detect imperfections or to locate changes in material properties.

The most commonly used Ultrasonic Testing Technique is pulse echo, whereby sound is introduced into a test object and reflections (echoes) from internal imperfections or the part's geometrical surfaces are returned to a receiver.

This method is very sensitive to detect crack type defects but requires extensive training for operator to interpret the result.

Generally, in steel inspection, UT can be applied with different levels, from plate up to node& nozzle.

 

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