Non-destructive testing of ferromagnetic articles

Details Non-destructive testing of ferromagnetic articles Non-destructive testing of ferromagnetic articles

G - Physics

01

N

324/50

G01N 27/82 (2006.01) G01N 27/83 (2006.01)

Patent

CA 1166696

ABSTRACT An instrument for simultaneously monitoring the effective cross-sectional area, and the presence of inhomogeneity caused by localized fault conditions such as pitting, corrosions, nicks, abrasions and broken wires in elongated ferromagnetic articles such as steel wire ropes, using a magnetic field, induced longitudinally in the article, and employing magnetic flux sensors, such as Hall devices, with their axis of maximum sensitivity set parallel to the major axis of the object, and forming part of ferromagnetic ringlike structures, surrounding the article, and with their electrical outputs by additive and subtractive processes in a number of operational amplifiers.

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