Abstract
This paper deals with identifying multiple cracks from eddy current testing (ECT) signals obtained in a steam generator tube with a support plate and deposits. Assume two-dimensionally scanned ECT signals to be a picture image, then the signal processing by a multi-frequency technique eliminates noise caused by the support plate and deposits. A template matching with help of genetic algorithms detects number and positions of cracks from the image after the signal processing. Inverse analysis estimates the crack profile based on the predicted position of cracks. The number and positions of the cracks are sufficiently well predicted. Crack shape reconstructions are achieved with a satisfactory degree of accuracy.
Original language | English |
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Pages (from-to) | 254-261 |
Number of pages | 8 |
Journal | Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A |
Volume | 71 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2005 Feb |
Keywords
- Eddy Current Testing
- Genetic Algorithms
- Inverse Problems
- Multiple Cracks
- Nondestructive Inspection
- Numerical Analysis
- Steam Generator Tubes
- Support Plates
- Template Matching
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering