Ultrasonic Testing (UT)
Ultrasonic testing uses high-frequency sound waves to detect internal material flaws. The echo provides information about material structure and defects. Irregular echoes indicate pores, cracks, or wear.
Physicochemical Mechanism of Action
Ultrasonic testing uses high-frequency sound waves that propagate through the workpiece and are reflected at material boundaries. The echo of the sound waves is recorded and analyzed.
Metallurgical Relevance & Risks in Welding
Ultrasonic testing is particularly important for detecting porosity, cracks, and wear in weld areas. Missing or irregular echoes can indicate serious material defects that impair the toughness and reliability of the component.
Workshop Practice & Action Instructions
For accurate ultrasonic testing, it is important that the inspector selects the correct frequency (typically between 1 and 5 MHz), prepares the workpiece surface cleanly, and allows the sound waves to strike at the correct angle. The results are evaluated using specialized software to determine the location and size of the detected defects.