Abstract
This paper describes a novel method identifying the number and positions of cracks. Using the ECT signal obtained by two-dimensional scanning as a picture image, a template matching method with help of genetic algorithms is applied to predict the number and positions of cracks. The present method employs a superposition of crack signals and a nonlinear scaling technique of a signal profile on crack length which are verified by numerical simulation. The number and positions of cracks are predicted sufficiently.
Original language | English |
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Pages (from-to) | 1236-1243 |
Number of pages | 8 |
Journal | Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A |
Volume | 69 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2003 Aug |
Keywords
- Eddy current testing
- Genetic algorithm
- Inverse problem
- Multiple cracks
- Nondestructive inspection
- Numerical analysis
- Pattern recognition
- Steam generator tubes
- Template matching
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering