Explore interactive eddy current calculators and learning tools for NDT technicians, engineers, students, and instructors. Calculate test parameters and visualize concepts such as depth of penetration, phase relationships, coil loading, and magnetic hysteresis. These educational tools support learning and preliminary calculations; inspection settings must be verified using applicable procedures and representative reference standards.
Slide Rule can be purchased on my Ebay store for $40. Just go to ebay and search for “Eddy Current Slide Rule”.
The ECT Calculator is an updated version of a vintage slide rule that has been used for decades in ECT to perform analog calculations of various eddy current test parameters.
The ECT calculator can be used as a starting point to determine approximate test parameters such as frequency selection, depth of penetration, separation angle etc.
Alternatively, the ECT calculator can be used to confirm calculations made from using mathematical formulas. The ECT Calculator can also quickly determine F90 frequency for surface and tube testing. Eddy current expert Edward Korkowski is a huge fan of the slide rule calculator.