Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1983-10-25
1986-05-27
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324220, 324240, G01N 2780, G01N 2782, G01R 3312
Patent
active
045917850
ABSTRACT:
A method of measuring hardness in steel casing to detect soft spots. A magnetizing force is generated and traversed along the length of the steel casing. A flux density is created along those portions of the steel casing traversed by the magnetizing force. The flux density is monitored to detect any change in such flux density caused by the presence of a soft spot in the hardness of the steel casing.
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Gilman Michael G.
Hager Jr. George W.
McKillop A. J.
Mobil Oil Corporation
Strecker Gerard R.
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