Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate
2007-01-09
2007-01-09
Patidar, Jay M. (Department: 2862)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S240000, C324S226000, C228S102000
Reexamination Certificate
active
10934103
ABSTRACT:
Quasistatic sensor responses may be converted into multiple model parameters to characterize hidden properties of a material. Methods of conversion use databases of responses and, in some cases, databases that include derivatives of the responses, to estimate at least three unknown model parameters, such as the electrical conductivity, magnetic permeability, dielectric permittivity, thermal conductivity, and/or layer thickness. These parameter responses are then used to obtain a quantitative estimate of a property of a hidden feature, such as corrosion loss layer thicknesses, inclusion size and depth, or stress variation. The sensors can be single element sensors or sensor arrays and impose an interrogation electric, magnetic, or thermal field.
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Goldfine Neil J.
Grundy David C.
Lyons Robert J.
Schlicker Darrell E.
Shay Ian C.
Hamilton Brook Smith & Reynolds P.C.
Jentek Sensors, Inc.
Patidar Jay M.
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