Eddy Current and Magnetic Testing of Magnetic Material by Uniform Eddy Current Probe

Uniform eddy current probe comprised of an exciting tangential coil and a detecting pancake coil simultaneously conducts eddy current testing and magnetic testing of magnetic material. The eddy current testing detects parallel flaws to the magnetic flux and the magnetic testing detects perpendicular flaws. The signal phase indicates whether ET or MT generates the signal. An appropriate test frequency provides almost same sensitivities for ET and MT.