Electricity: measuring and testing – Magnetic – With means to create magnetic field to test material
Reexamination Certificate
2006-08-29
2006-08-29
Patidar, Jay M. (Department: 2862)
Electricity: measuring and testing
Magnetic
With means to create magnetic field to test material
C324S238000, C324S240000
Reexamination Certificate
active
07098655
ABSTRACT:
An eddy-current sensor for nondestructive testing according to the present invention includes a planar exciting coil having a pair of current lines in parallel with each other through which exciting currents flow in opposite directions to each other during the testing, for generating an alternative magnetic field applied to a subject to be nondestructively tested by the exciting currents, and at least one MR element positioned on a central axis between the pair of current lines and on the opposite side to the subject in relation to the exciting coil, for detecting a magnetic field generated newly from the subject by an eddy-current induced by the alternative magnetic field.
REFERENCES:
patent: 5747988 (1998-05-01), Suzuma
patent: 6150809 (2000-11-01), Tiernan et al.
patent: 6888346 (2005-05-01), Wincheski et al.
patent: 7-83884 (1995-03-01), None
patent: 9-189682 (1997-07-01), None
patent: 11-248685 (1999-09-01), None
patent: 2000-80535 (2000-03-01), None
patent: 2002-90490 (2002-03-01), None
Y. Kataoka, et al. “Application of GMR Line Sensor to Eddy Current Testing Probe”, Journal of the Magnetics Society of Japan, vol. 27, No. 4, pp. 385-388, Apr. 1, 2003.
Y. Kataoka, et al. “Application of GMR Line Sensor to Eddy Current Testing”, Digests of Intermag 2003, IEEE, CQ-07, Apr. 2003.
Sotoshi Yamada, et al. “Inspection of Bare Printed Circuit Board Using Planar Type ECT Probe”, Review of Progress in Quantitative NDE, p. 9, Jul. 28, 2003.
Yuzo Fukuda, et al. “High Frequency and Small Field Amplitude Characteristics of GMR-SV Sensor for Eddy Current Testing”, The 27th Annual Conference of Magnetics in Japan, 19pC-1, p. 472, Sep. 19, 2003.
K. Chomusuwan, et al. “The GMR Sensor Utilization for PCB Inspection Based on Eddy-Current Testing Technique”, The 27th Annual Conference of Magnetics in Japan, 19pC-2, p. 473, Sep. 19, 2003.
Y. Fukuda, et al. “High-Frequency, Low-Amplitude Magnetic Field Characteristics of SV-GMR Sensor for ECT Technique”, Journal of the Magnetics Society of Japan, vol. 28, No. 3, pp. 405-408, Mar. 1, 2004.
K. Chomsuwan, et al. “GMR Sensor Utilization for PCB Inspection Based on the Eddy-Current Testing Technique”, Transactions of the Magnetics Society of Japan, vol. 4, No. 1, pp. 39-42, Feb. 1, 2004.
T. Miyagoshi, et al. “Feasibility of Inspecting Defects in Printed Circuit Boards by Using Eddy-Current Testing Techniques”, Journal of the Magnetics Society of Japan, vol. 23, No. 4-2, pp. 1613-1616, 1999.
S. Yamada, et al. “Trend of Detection Techniques Using Planar-Type Micro-Eddy-Current Testing Probes”, Journal of the Magnetics Society of Japan, vol. 23, No. 7, pp. 1817-1825, 1999.
Kazunori Nakamura, et al., “ECT Multi-Sensor for Inspection of Printed Circuit Boards”, The 15thSymposium on Electromagnetic and Dynamics, May 28, 2003, pp. 339-342 (with English Abstract).
Yasuhiro Kataoka, et al., “Detection of Eddy Current Change by Slit using GMR Line Sensor”, The Papers of Technical Meeting on Magnetics, IEEE Japan (MAG), MAG-02, No. 131-136, Oct. 23, 2002, pp. 11-16 (with English Abstract).
Shoji Shigeru
Yamada Sotoshi
Kanazawa University
TDK Corporation
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