Magnetic flaw detection apparatus and magnetic flaw detection method

摘要

A magnetic flaw detection apparatus and a magnetic flaw detection method according to the present invention apply a magnetic field to an object to be inspected, detect magnetism from a plurality of mutually different first detection positions from the outer surface of the object to be inspected, , And determines the position of a predetermined defect in the object to be inspected along a first direction of contacting and separating from the object to be inspected.