DocumentCode
1007123
Title
Eddy current imaging
Author
McCary, R.O. ; Oliver, D.W. ; Silverstein, K.H. ; Young, J.D.
Author_Institution
General Electric Corporate Research and Development, Schenectady, NY
Volume
20
Issue
5
fYear
1984
fDate
9/1/1984 12:00:00 AM
Firstpage
1986
Lastpage
1988
Abstract
A laboratory eddy current imaging system has been assembled to scan a probe over a sample and to record digital eddy current images. The system is microprocessor controlled and it transmits images to a VAX 780 computer for image processing. These images have been used for probe characterization and to study the imaging process. The eddy current system has a vector response to a flaw; the signal has both magnitude and phase. Images of response magnitude, in-phase component, out-of phase component, and phase angle have been displayed. Image processing techniques have been applied to the images for data correction and to extract imformation. Two types of probes have been examined: cylindrical pot-core probes and recording head probes.
Keywords
Eddy currents; Imaging/mapping; Inspection; Materials testing; Assembly systems; Data mining; Eddy currents; Image processing; Image storage; Laboratories; Magnetic heads; Microprocessors; Pixel; Probes;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1984.1063555
Filename
1063555
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