METHOD FOR MAGNETIC CONTROL AND DEVICE FOR REALIZATION OF SAID METHOD Russian patent published in 2005 - IPC

FIELD: non-destructive control technologies.

SUBSTANCE: object is magnetized and relief of magnetic dispersion field by rotation of object table base with object placed on it, between poles of U-shaped magnet, scanning of magnetic field relief is performed by rotation of object table base with samples on it, between poles of magnetization means and two string sets of magnetic-sensitive elements. Conversion of magnetic dispersion field to electric signal is performed and information is read by compensation method due to fact, that axes of sensitivity of magnetic-sensitive elements of upper set and lower set are directed oppositely to each other. Device has magnetization means, magnetic-sensitive converter, reading means, information processing means and defects visualization means, object table with base. Examined object is placed on table base. Table base is mounted with possible rotation between poles of magnetization means and two identical parallel-placed string sets of magnetic-sensitive elements. Each sensitive element of upper set matches sensitive element of lower set, and sensitivity axes thereof are directed oppositely to each other.

EFFECT: higher trustworthiness and reliability of defects identification.

2 cl, 3 dwg