Method and wheel probe head for ultrasound monitoring of overlapping welded joints between sheets by the impulse method

摘要

In a method and a device for the ultrasonic monitoring of overlapping welded joints between a first sheet (44) and a second sheet (46 pulses are irradiated at an angle of between 15 and 80° into the first sheet (44) by means of a first rotating probe head (28), which a) is arranged on a mount (20), b) has a tyre (80) rotating about the axle body (50), coupled to the ultrasound transmitter (58) and rolling along the first sheet (44), parallel to the overlapping welded joint (78). On ultrasound investigation of the overlapping welded joint (78) the impulses transmitted to the second sheet (46) are received by means of a second receiving rotating probe head (30), of similar construction to the first rotating probe head (28).