METHOD AND DEVICE FOR DETECTING FLAW OF INSPECTING OBJECT, AND PROBE FOR EDDY CURRENT FLAW DETECTION

PROBLEM TO BE SOLVED: To provide a flaw detection method that readily enables giving magnetic fields of two directions to be provided easily to an inspecting object, using a simple configuration, and can detect flaws in any direction. SOLUTION: Two coils 21 and 22, whose cross section has a rectangular shape that forms an exciting coil 11B, alternating currents, mutually having a phase difference of 90°, are made to flow in two coils to generate a rotation magnetic field; the rotating magnetic field generates eddy current on the surface of the measuring object WK2 that penetrates the two coils; and a magnetism detecting element 12, arranged at a location where two coils cross each other, performs eddy current flaw detection. COPYRIGHT: (C)2009,JPO&INPIT