Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1995-08-10
1997-11-18
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
324225, 324232, 324241, G01N 2790, G01R 3312
Patent
active
056891830
ABSTRACT:
An electromagnetic-induction type inspection device for inspecting a test specimen by placing the specimen in electromagnetic fields produced by exciting coils, detecting induction currents from induction coils set in the electromagnetic fields, and analyzing a composite signal composed of the amplitude and phase components contained in a differential current between the induction currents. The composite signal is expressed as a waveform which is displayed on a display unit, so that deformed portions of the waveform, which represent internal defects or other abnormalities in the specimen, can be identified.
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Kaisei Engineer Co., Ltd.
Strecker Gerard R.
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