Process and apparatus for the non-destructive examination of fer

Details Process and apparatus for the non-destructive examination of fer Process and apparatus for the non-destructive examination of fer

1986-07-11

1988-12-20

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

With compensation for test variable

324235, 324242, 324262, G01N 2783, G01R 3306

Patent

active

047927550

ABSTRACT:
This invention relates to a process and an apparatus for the non-distructive examination of ferromagnetic bodies having sections of their surface adjoining along edges. The bodies or body parts are examined for structural faults or disturbances, including the regions along the edges and/or at the corners. A magnetic field is produced in the given body or body section. This field is stationary with respect to magnetic field sensors provided for measuring the stray fields on the surface. In a first measuring phase, measurements obtained for stray flux which are characteristic for the various positions of the magnetic field sensors along the surface of the body or body section are stored as reference values. In a second measuring phase, the reference values allocated to the various positions are subtracted from the stray flux values measured at these positions. The differences are then compared with predetermined threshold values.

REFERENCES:
patent: 3535624 (1970-10-01), Wood
patent: 3670239 (1972-06-01), Shiraiwa et al.
patent: 4087749 (1978-05-01), McCormack
patent: 4258319 (1981-03-01), Shimada et al.
patent: 4288747 (1981-09-01), Kawabata et al.
patent: 4439730 (1984-03-01), Kauffman
patent: 4460869 (1984-07-01), Buser et al.
patent: 4477776 (1984-10-01), Spierer
patent: 4485344 (1984-11-01), de Sivry et al.
patent: 4538108 (1985-08-01), Huschelrath et al.
patent: 4556846 (1985-12-01), D'Hondt
patent: 4564809 (1986-01-01), Huschelrath et al.
patent: 4591784 (1986-05-01), Kolitsch et al.
patent: 4677379 (1987-06-01), Arnaud et al.

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