Test head for inductive surface testing having plural resonant c

Details Test head for inductive surface testing having plural resonant c Test head for inductive surface testing having plural resonant c

1978-05-24

1980-11-18

Strecker, Gerard R.

Electricity: measuring and testing

Magnetic

Magnetic test structure elements

324237, 336 83, G01R 3300

Patent

active

042348480

ABSTRACT:
A test head for the inductive surface testing of metallic workpieces is provided with eddy-current probes respectively disposed in a plurality of holes in a holder. Each eddy-current probe is part of an individual resonant circuit and formed of coil with a ferrite core, the axis of the coil extending substantially at right angles to the workpiece surface. The holder comprises an electrically or magnetically conductive material, thereby increasing the area over which the field of each said probe is effective.

REFERENCES:
patent: 3437918 (1969-04-01), Arnelo
patent: 3931571 (1976-01-01), Hocking et al.
patent: 3976936 (1976-08-01), Nishino
F. Verlag, "Telefunkin Laborbuch," vol. 1, pp. 142-145, Munich.

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