Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Patent
1991-12-06
1995-09-26
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
32420717, 324227, 324230, 324232, 324243, 364578, G01N 2772, G01N 2782, G01R 3312, G01B 710
Patent
active
054536898
ABSTRACT:
Apparatus and methods are disclosed which provide increased sensitivity, selectivity and dynamic range for non-contact measurement of actual physical and/or kinematic properties of conducting and magnetic materials. The apparatus and methods are based upon various methods for increasing sensitivity, selectivity and dynamic range through proper construction of a magnetometer sensor and for proper selection of operating point parameters for the application. A measurement apparatus for measuring one or more MUT properties includes an electromagnetic winding structure which, when driven by an electric signal, imposes a magnetic field in the MUT and senses an electromagnetic response. An analyzer is provided for applying the electric signal to the winding structure. A property estimator is coupled to the winding structure and translates sensed electromagnetic responses into estimates of one or more preselected properties of the material.
REFERENCES:
patent: 3249854 (1966-05-01), Nevius
patent: 3939404 (1976-02-01), Tait
patent: 4058766 (1977-11-01), Vogel et al.
patent: 4399100 (1983-08-01), Zsolnay et al.
patent: 4423371 (1983-12-01), Senturia et al.
patent: 4496697 (1985-01-01), Zsolnay et al.
patent: 4757259 (1988-07-01), Charpentier
patent: 4814690 (1989-03-01), Melcher et al.
patent: 4873489 (1989-10-01), Melcher et al.
patent: 4922201 (1990-05-01), Vernon et al.
patent: 5015951 (1991-05-01), Melcher
patent: 5059902 (1991-10-01), Linder
patent: 5086274 (1992-02-01), Gobin et al.
C. V. Dodd and W. E. Deeds, "Absolute Eddy-Current Measurement of Electrical Conductivity" pp. 387-394.
C. V. Dodd and W. A. Simpson, "Measurement of Small Magnetic Permeability Changes by Eddy Current Techniques", pp. 217-221 (Oct. 1971).
J. H. Rose and S. M. Nair, "Exact Recovery of the DC Electrical Conductivity of a Layered Solid", pp. L31-L36 (1991).
Goldfine Neil J.
Melcher, deceased James R.
Massachusetts Institute of Technology
Strecker Gerard R.
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