ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In this paper, absolute and differential eddy current signals from various shapes and sizes ofdefects in the steam generator tube are numerically predicted and their slope characteristics areinvestigated. The signal variations due to frequency increase are also observed. Then, the analysis ofmixed defect signals affected by a ferromagnetic support plate is attempted. Axisymmetric finiteelement modeling is used for signal prediction and the slope angle of signal is used importantly inanalyzing the signal. Results show that differential signals are useful for locating the position of adefect inside the support plate hole, while absolute signals are easy to presume and interpret eventhough the effect of support plate is mixed in the signal. Understanding of respective signalcharacteristics and relationship between them will be helpful for more reliable defect characterization
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/51/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.321-323.420.pdf
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