Electricity: measuring and testing – For insulation fault of noncircuit elements
Patent
1990-07-12
1993-03-23
Harvey, Jack B.
Electricity: measuring and testing
For insulation fault of noncircuit elements
324675, 324693, G01R 2700, G01R 2726
Patent
active
051967995
ABSTRACT:
A method and apparatus for the non-destructive testing of a protective baer material. In a preferred embodiment, the method comprises applying an alternating electrical current across the protective barrier material for establishing a conductivity, G, of the protective barrier material and/or a quality factor, Q, of the protective barrier material. The conductivity, G, and/or the quality factor, Q, are measured at more than one frequency. The quality factor and/or conductivity measurements so obtained at the more than one frequency are compared to predetermined quality factor and/or conductivity limits.
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Beard Richard B.
Prout Frederick
Schmukler Robert
Schwan Herman P.
Drexel University
Harvey Jack B.
United States of America as represented by the Food & Drug Admin
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