Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate
2009-06-15
2010-10-12
Aurora, Reena (Department: 2858)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S235000, C324S209000
Reexamination Certificate
active
07812601
ABSTRACT:
Eddy current sensors and sensor arrays are used for process quality and material condition assessment of conducting materials. In an embodiment, changes in spatially registered high resolution images taken before and after cold work processing reflect the quality of the process, such as intensity and coverage. These images also permit the suppression or removal of local outlier variations. Anisotropy in a material property, such as magnetic permeability or electrical conductivity, can be intentionally introduced and used to assess material condition resulting from an operation, such as a cold work or heat treatment. The anisotropy is determined by sensors that provide directional property measurements. The sensor directionality arises from constructs that use a linear conducting drive segment to impose the magnetic field in a test material. Maintaining the orientation of this drive segment, and associated sense elements, relative to a material edge provides enhanced sensitivity for crack detection at edges.
REFERENCES:
patent: 5015951 (1991-05-01), Melcher
patent: 5172580 (1992-12-01), Thompson
patent: 5453689 (1995-09-01), Goldfine et al.
patent: 5793206 (1998-08-01), Goldfine et al.
patent: RE36986 (2000-12-01), Melcher
patent: 6188218 (2001-02-01), Goldfine et al.
patent: 6657429 (2003-12-01), Goldfine et al.
patent: 6952095 (2005-10-01), Goldfine et al.
patent: 6992482 (2006-01-01), Shay et al.
patent: 7161350 (2007-01-01), Goldfine et al.
patent: 7289913 (2007-10-01), Schlicker et al.
patent: 7451657 (2008-11-01), Goldfine et al.
patent: 2003/0164700 (2003-09-01), Goldfine et al.
patent: 2007/0069720 (2007-03-01), Goldfine et al.
Blodgett, M.P., Ukpabi, C.V., and Nagy, P.B., “Surface Roughness Influence on Eddy Current Electrical Conductivity Measurements,” Materials Evaluation, pp. 765-772 Jun. 2003.
Goldfine, N., “Characterization of Shot Peening using Eddy Current MWM Sensors and Imaging MWM-Arrays,” 2004 U.S. Shot Peening and Blast Cleaning Workshop Presentation, Dearborn, MI, Oct. 2004, 72 pages.
Craven Christopher A.
Goldfine Neil J.
Grundy David C.
Lyons Robert J.
Schlicker Darrell E.
Aurora Reena
Hamilton Brook Smith & Reynolds P.C.
JENTEK Sensors, Inc.
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