Ultrasonic Angle Beam Testing
Ultrasonic angle probe technique uses angled waves to detect flaws in welds that are not perpendicular to the surface. It is the standard method for checking weld quality.
Physicochemical Mechanism of Action
The technique uses an ultrasonic angle probe that generates obliquely incident waves (transverse waves). These waves reflect off the sides of flaws or defects in the weld and are guided back to the receiver. Detection is performed by analyzing these reflections.
Metallurgical Relevance & Risks in Welding
The technique is particularly well suited for detecting flaws such as cracks, inclusions, or incomplete fusion in the weld. Improper use can lead to inaccurate results and potentially overlook defects, posing risks to the safety and service life of the component.
Workshop Practice & Action Instructions
To use the technique correctly, the ultrasonic angle probe must be positioned at an angle of 45 degrees to the surface. The wave frequency should be between 2 and 10 MHz. It is important that the weld is clean and free of dust or other contaminants to achieve accurate results. The inspection should be performed in at least two directions to cover all possible flaws.