“Weldolets” are butt weld connections which serve minimisation of stress peaks as well as integral reinforcement. The ferritic welded seams are tested for cracks from the outside, whereby the often high operating temperature of up to 540 °C poses a particular challenge to the test system and the testers.
To perform the test, DELTA TEST has developed a simple and robust system which serves as probe guide and enables 3-axis position tracking. The position data and the eddy current test data are fed into the system and processed there as a C-scan. The decisive advantage is that this test is possible during system operation. Cooling down and starting up phases can be avoided and the test is independent of idle phases.