3. Eddy Currents
The development of an eddy current testing system is described which encloses a 4-frequency test device as well as extensive computer programs to optimize layout and adaptation to practical problems. Results obtained on the testing of welds and heat exchanger tubes are presented. The testing aim is to detect defects and to determine their type and size.
Höller, P.; Becker, R.; and Betzold, K., "Overview of Eddy Current Research at Saarbrücken" (1980). Proceedings of the DARPA/AFML Review of Progress in Quantitative NDE, July 1978–September 1979. 9.