Carriage for eddy current probe having contact ball engagement b

Details Carriage for eddy current probe having contact ball engagement b Carriage for eddy current probe having contact ball engagement b

1991-07-15

1994-07-12

Snow, W.

Electricity: measuring and testing

Magnetic

Magnetic test structure elements

324226, 324238, G01N 2772, G01R 3312

Patent

active

053292308

ABSTRACT:
An eddy current probe for detecting material flaws by inducing and measuring eddy currents in the surface of a material. The probe is held at a constant lift-off distance from the surface by a probe carriage that slides across the surface in a straight scan line. The carriage moves relative to a motorized bracket that slides the carriage across the surface. This relative movement allows the carriage to move across an uneven surface without deflecting the probe from a straight scan line. The probe has a split core so that an adjacent pair of coils project and detect electromagnetic fields on the surface being measured. Both coils have opposing flat sides that allow the coils to be closely packed together within the probe body.

REFERENCES:
patent: 4134067 (1979-01-01), Woodbury
patent: 4258319 (1981-03-01), Shimada et al.

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