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Impedance sensing of flaws in non-homogenous materials

United States Patent

5,602,486
February 11, 1997
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
An apparatus and method for sensing impedances of materials placed in contact therewith. The invention comprises a plurality of drive electrodes and one or more sense electrodes. Both rotating electric fields and differently shaped electric fields are provided for, as are analysis of structure and composition at different orientations and depths.
Novak; James L. (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
08/ 336,999
November 10, 1994
GOVERNMENT RIGHTS The Government has rights to this invention pursuant to Contract No. DE-AC04-76DP00789 awarded by the U.S. Department of Energy.