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Proceedings Paper

Investigation of eddy current examination on OD fatigue crack for steam generator tubes
Author(s): Yuying Kong; Boyuan Ding; Ming Li; Jinhong Liu; Huaidong Chen; Norbert G. Meyendorf
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Paper Abstract

The opening width of fatigue crack was very small, and conventional Bobbin probe was very difficult to detect it in steam generator tubes. Different sizes of 8 fatigue cracks were inspected using bobbin probe rotating probe. The analysis results showed that, bobbin probe was not sensitive for fatigue crack even for small through wall crack mixed with denting signal. On the other hand, the rotating probe was easily to detect all cracks. Finally, the OD phase to depth curve for fatigue crack using rotating probe was established and the results agreed very well with the true crack size.

Paper Details

Date Published: 27 March 2015
PDF: 7 pages
Proc. SPIE 9439, Smart Materials and Nondestructive Evaluation for Energy Systems 2015, 94390X (27 March 2015); doi: 10.1117/12.2084713
Show Author Affiliations
Yuying Kong, CGNPC Inspection Technology Co. Ltd. (China)
Boyuan Ding, CGNPC Inspection Technology Co. Ltd. (China)
Ming Li, CGNPC Inspection Technology Co. Ltd. (China)
Jinhong Liu, CGNPC Inspection Technology Co. Ltd. (China)
Huaidong Chen, CGNPC Inspection Technology Co. Ltd. (China)
Norbert G. Meyendorf, Fraunhofer IKTS-MD (Germany)


Published in SPIE Proceedings Vol. 9439:
Smart Materials and Nondestructive Evaluation for Energy Systems 2015
Norbert G. Meyendorf, Editor(s)

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