Electromagnetic device and method for detecting...

Details Electromagnetic device and method for detecting... Electromagnetic device and method for detecting...

G - Physics

01

N

G01N 27/83 (2006.01) G01N 27/82 (2006.01) G01R 33/12 (2006.01)

Patent

CA 2098646

AN ELECTROMAGNETIC DEVICE AND METHOD FOR DETECTING DISCONTINUITIES IN FERROMAGNETIC OBJECTS Abstract of the Disclosure A direct-current electromagnetic device for nondestructively detecting localized discontinuities in ferromagnetic objects is disclosed. The device comprises an adjustable dc excitor means, a magnetic flux injector means, an external magnetic field detector means, a plurality of position sensors, a signal processing means and a control means. It is particularly adapted for detecting flaws in soiled and distorted ferromagnetic objects such as water wall tubes in industrial boilers. An apparatus incorporating the device and a method of detecting discontinuities are also disclosed.

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