Concentric coplanar capacitive sensor for nondestructive evaluation
نویسندگان
چکیده
A concentric coplanar capacitive sensor includes a charged central disc forming a first electrode, an outer annular ring coplanar with and outer to the charged central disc, the outer annular ring forming a second electrode, and a gap between the charged central disc and the outer annular ring. The first electrode and the second electrode may be attached to an insulative film. A method provides for determining transcapacitance between the first electrode and the second electrode and using the transcapacitance in a model that accounts for a dielectric test piece to determine inversely the properties of the dielectric test piece. Disciplines Electrical and Computer Engineering | Materials Science and Engineering This patent application is available at Iowa State University Digital Repository: http://lib.dr.iastate.edu/patents/62 111111 1111111111111111111111111111111111111111111111111111111111111111111111111111 US 20120013354Al (19) United States c12) Patent Application Publication BOWLER et al. (10) Pub. No.: US 2012/0013354 A1 (43) Pub. Date: Jan. 19, 2012 (54) CONCENTRIC COPLANAR CAPACITIVE SENSOR FOR NONDESTRUCTIVE EVALUATION
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