Device having electromagnet for providing a magnetic field incli

Details Device having electromagnet for providing a magnetic field incli Device having electromagnet for providing a magnetic field incli

1988-06-28

1990-05-08

Strecker, Gerald R.

Electricity: measuring and testing

Magnetic

With means to create magnetic field to test material

324228, 324242, G01N 2782, G01R 3306, G01R 3312

Patent

active

049241818

ABSTRACT:
The subject of the invention is a device for non-destructive testing of long bodies (14) for structural faults by means of magnetizing the respective body (14). At least one magnetic field is directed onto the body (14). The structural faults in the body cause changes in the magnetic field pattern. The changes are picked up by magnetic field sensors (50, 52) arranged on or near the body surface. The respective body (14) is moved through the magnetic field, which has an inclination of preferably 45.degree. to the transportation direction (26) of the body (14). The magnetic field sensors (50, 52) are oriented transverse to the direction of the magnetic field.

REFERENCES:
patent: 2338793 (1944-01-01), Zuschlag
patent: 4096437 (1978-06-01), Kitzinger
patent: 4477776 (1984-10-01), Spierer
patent: 4495465 (1985-01-01), Tomaiuolo et al.
patent: 4538108 (1985-08-01), Huschelrath et al.

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