Nondestructive inspection device

特許 係属中 PROBLEM TO BE SOLVED: To improve the detection sensitivity by concentrating induced current to a measuring region, in a nondestructive inspection apparatus that uses a teleguidance type alternate potential. ; SOLUTION: Two coils wound so as to be parallel to the sample surface are installed in a sensor, used for the nondestructive inspection apparatus so as to provide a magnetic flux perpendicular to the surface of the sample (vertical magnetic flux type).