Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1986-10-17
1989-02-21
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324220, 336132, 336134, 336221, G01N 2782, H01F 300, H01F 1704
Patent
active
048068632
ABSTRACT:
Apparatus for testing for flaws in conductive objects which includes a coil of electrically conducting wire and an associated flux concentrator of electromagnetically active material which is disposed radially from the coil, sized and shaped to provide a desired resolution of flaw detection and provides close coupling between the coil and conductive object. An associated bridge circuit detects changes in the coil's impedance, caused by flaws in the object, and activates a display to visually indicate a change in impedance.
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Strecker Gerard R.
Westinghouse Electric Corp.
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