Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate
2008-03-25
2008-03-25
Patidar, Jay M (Department: 2862)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S238000, C324S225000, C324S202000, C324S209000
Reexamination Certificate
active
11522628
ABSTRACT:
Sensor condition verification may be performed on electromagnetic sensors and sensor arrays mounted to a material surface. The sensors typically have a periodic winding or electrode structure that creates a periodic sensing field when driven by an electrical signal. The sensors can be thin and flexible so that they conform to the surface of the test material. Monitoring the conductivity changes of a test material, with changes in temperature, may provide a mechanism for testing the integrity of the sensor. Changes in the conductivity, due to changes in temperature, without significant lift-off changes may verify the calibration of the sensor and that the sensor elements themselves are intact.
REFERENCES:
patent: 3696290 (1972-10-01), Dreckmann et al.
patent: 4095180 (1978-06-01), Brown
patent: 4164874 (1979-08-01), Cassatt et al.
patent: 4271393 (1981-06-01), Hansen et al.
patent: 4384252 (1983-05-01), Kolter
patent: 4644271 (1987-02-01), Toth et al.
patent: 4675057 (1987-06-01), Pfaffmann et al.
patent: 4746858 (1988-05-01), Metala et al.
patent: 4810966 (1989-03-01), Schmall
patent: 4963826 (1990-10-01), Capobianco et al.
patent: 5006800 (1991-04-01), Hedengren et al.
patent: 5015951 (1991-05-01), Melcher
patent: 5227731 (1993-07-01), Prabhakaran et al.
patent: 5262722 (1993-11-01), Hedengren et al.
patent: 5311128 (1994-05-01), Lareau et al.
patent: 5453689 (1995-09-01), Goldfine et al.
patent: 5467014 (1995-11-01), Nix
patent: 5549803 (1996-08-01), Schoess et al.
patent: 5610517 (1997-03-01), Ma et al.
patent: 5617024 (1997-04-01), Simpson et al.
patent: 5629621 (1997-05-01), Goldfine et al.
patent: RE35703 (1997-12-01), Koch et al.
patent: 5698977 (1997-12-01), Simpson et al.
patent: 5793206 (1998-08-01), Goldfine et al.
patent: 5966011 (1999-10-01), Goldfine et al.
patent: 5969260 (1999-10-01), Belk et al.
patent: 6420867 (2002-07-01), Goldfine et al.
patent: 6501267 (2002-12-01), Kurokawa et al.
patent: 6657429 (2003-12-01), Goldfine et al.
patent: 6952095 (2005-10-01), Goldfine et al.
patent: 2005/0027476 (2005-02-01), Lim
patent: 0 577 244 (1994-01-01), None
patent: 0 884 588 (1998-12-01), None
patent: 886247 (1962-01-01), None
patent: 1 567 600 (1980-05-01), None
patent: 58006458 (1983-01-01), None
patent: WO 98/30921 (1998-07-01), None
patent: WO 98/40732 (1998-09-01), None
patent: WO 99/22231 (1999-05-01), None
patent: WO 99/26062 (1999-05-01), None
Air Force Association (1997), “Air Force Almanac”, May 1997.
Auld, B.A. and Moulder, J.C. (1999), “Review of Advances in Quantitative Eddy-Current Nondestructive Evaluation”, Journal of Nondestructive Evaluation, vol. 18, No. 1.
Committee On Aging of US Air Force Aircraft (1997), “Aging of US Air Force Aircraft”, ISBN 0-309-05935-6, 1997.
Friedel, J. (1964), Dislocations, Pergamon Press, pp. 424-427.
Goldfine, N., A. Washabaugh, K. Walrath, P. Zombo, and R. Miller (1998), “Conformable Eddy Current Sensors and Methods for Gas Turbine Inspection and Health Monitoring”, ASM International, Gas Turbine Technology Conference, Materials Solutions '98, Rosemont, IL, pp. 1-10.
Goldfine, N., et al., (1998 NASA), “Surface-Mounted Eddy-Current Sensors for On-Line Monitoring of Fatigue Tests and for Aircraft Health Monitoring”, presented at the Second Joint NASA/FAA/DoD Conference on Aging Aircraft, Aug. 1998, pp. 1-16.
Kramer, I.R. (1974), “A Mechanism of Fatigue Failure”, Metallurgical Transactions, v.5, Aug. 1974, pp. 1735-1742.
Suresh, S. (1998), “Fatigue of Materials”, Second Edition, Cambridge University Press, pp. 39-85.
Taira, S., and Hayashi, K. (1966), Proc. 9thJapanese Congress of Testing Materials, p. 1-6.
Weiss, V. and Oshida, Y. (1984), “Fatigue Damage Characterization by X-Ray Diffraction Line Analysis”, inFatigue 84, pp. 1151-1160.
Navy Phase I Proposal, titled “Application of the Meandering Wire Magnetometer to Detection and Quantification of Cumulative Fatigue Damage in Aircraft Structural Components”, Topic #N95-033, dated Jan. 12, 1995.
Navy Phase I Final Report, titled “Application of the MWM to Detection and Quantification of Cumulative Fatigue Damage in Aircraft Structural Components”, dated Apr. 30, 1996, Contract #N0001995C0220.
Navy Phase II Proposal, titled “Application of the Meandering Wire Magnetometer to Detection and Quantification of Cumulative Fatigue Damage in Aircraft Structural Components”, Topic #N95-033, dated May 17, 1996.
Navy Phase II Final Report, titled “Application of the MWM to Detection and Quantification of Cumulative Fatigue Damage in Aircraft Structural Components”, dated Feb. 16, 1999, Contract #N00421-97-C-1120.
Air Force Phase I Proposal, titled “Portable Accumulated Fatigue Damage Inspection System Using Permanently Mounted and Wide-Area Imaging Arrays”, Topic #AF99-286, dated Jan. 11, 1999.
Air Force Phase II Proposal, titled “Portable Accumulated Fatigue Damage Inspection System Using Permanently Mounted and Wide-Area Imaging MWM-Arrays”, Topic #AF99-286, dated Dec. 3, 1999.
Air Force Phase I Final Report, titled “Portable Accumulated Fatigue Damage Inspection System Using Permanently-Mounted and Wide-Area Imaging MWM-Arrays”, dated Mar. 10, 2000, Contract #F09650-99-M-1328.
Technical Paper titled “Surface-Mounted Eddy-Current Sensors for On-line Monitoring of Fatigue Tests and for Aircraft Health Monitoring”, presented at the Second Joint NASA/FAA/DoD Conference on Aging Aircraft, Aug. 1998.
JENTEK Sensors, Inc. Trip Report to Tinker AFB, dated Jul. 6, 1999.
Technical Abstract titled “New MWM Arrays with High Resolution and Increased Depth of Sensitivity for Quantitative Imaging of “Hidden” Fatigue and Corrosion over Wide Areas”, submitted to the Third Joint FAA/DoD/NASA990923 Conference on Aging Aircraft, Sep. 1999.
Technical Paper titled “Recent Applications of Meandering Winding Magnetometers to Materials Characterization”, presented at The 38thAnnual British Conference on NDT, Sep. 13-16, 1999.
Technical Paper titled “Anisotropic Conductivity Measurements for Quality Control of C-130/P-3 Propeller Blades Using MWM™-Sensors with Grid Methods”, presented at the Fourth Joint DoD/FAA/NASA Conference on Aging Aircraft, May 16, 2000.
Presentation Slides titled “Anisotropic Conductivity Measurements for Quality Control of C-130/P-3 Propeller Blades Using MWM Sensors with Grid Methods”, presented at the Fourth Joint DoD/FAA/NASA Conference on Aging Aircraft, May 16, 2000.
FAA Year Two Final Report titled “Development of Conformable Eddy Current Sensors for Engine Component Inspection”, dated Aug. 4, 2000, Contract #DTFA03-98-D-00008.
Technical Paper titled “Application of MWM-Array Eddy Current Sensors to Corrosion Mapping”, presented at the 4thInternational Aircraft Corrosion Workshop, Aug. 22-25, 2000.
Goldfine Neil J.
Schlicker Darrell E.
Tsukemik Vladimir
Walrath Karen E.
Washabaugh Andrew P.
Hamilton Brook Smith & Reynolds P.C.
JENTEK Sensors, Inc.
Patidar Jay M
LandOfFree
Method for verifying sensor condition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for verifying sensor condition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for verifying sensor condition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3937099