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Title: Impedance sensing of flaws in non-homogeneous materials

Patent ·
OSTI ID:441874

An apparatus and method are disclosed 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. 10 figs.

Research Organization:
AT&T
DOE Contract Number:
AC04-76DP00789
Assignee:
Sandia Corp., Albuquerque, NM (United States)
Patent Number(s):
US 5,602,486/A/
Application Number:
PAN: 8-336,999
OSTI ID:
441874
Resource Relation:
Other Information: PBD: 11 Feb 1997
Country of Publication:
United States
Language:
English