Cladding Detection via Ultrasonic Testing
Ultrasound is used to detect lack of fusion and delamination between cladding and base material. High frequencies and special probes detect even the smallest separations.
Physical-Chemical Mechanism of Action
Ultrasound sends high-frequency sound waves that are reflected at interfaces between different materials. These reflections are captured by a receiver and visualized.
Metallurgical Relevance & Welding Risks
Lack of fusion and delaminations can lead to corrosion, cracks, and reduced mechanical properties. Ultrasound enables early detection of these defects so they can be fixed before use.
Workshop Practice & Instructions
Use high-frequency ultrasonic detectors with special probes. Use a frequency of at least 5 MHz. The distance limit for detection is typically 0.1 to 0.2 mm. Make sure there is good contact between the ultrasonic probe and the surface being tested.