Ultrasonic Testing (UT)
Ultrasonic Testing Inspection (UT) is one of the most accurate NDT methods, to detect subsurface flaws deep within the test part, for steel thickness from 8 mm thick up to as thick as commercially available (up to approx. 200 mm deep) and is highly sensitive so can detect extremely small flaws.
UT uses electronically produced high-frequency sound waves to penetrate metals such as steel and other alloys and give readings on a diagnostic machine which is attached to the transmitter. Short ultrasonic pulses are passed through the metal. As there are no chemicals used, this method is non-hazardous so will not affect others nearby, and as the results are immediate, decisions can be made regarding the faults in the structure of the metal.