Identification of multiple cracks from eddy current testing signal by image processing using a template matching method

Yoshiaki Nagaya; Toshiyuki Takagi; Haoyu Huang; Tetsuya Uchimoto

doi:10.1299/kikaia.69.1236

Identification of multiple cracks from eddy current testing signal by image processing using a template matching method

Yoshiaki Nagaya, Toshiyuki Takagi, Haoyu Huang, Tetsuya Uchimoto

Lyon Center (Integration Research Center for Materials and Fluid Sciences)

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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
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	https://doi.org/10.1299/kikaia.69.1236
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

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Identification of multiple cracks from eddy current testing signal by image processing using a template matching method. / Nagaya, Yoshiaki; Takagi, Toshiyuki; Huang, Haoyu; Uchimoto, Tetsuya.

In: Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 69, No. 8, 08.2003, p. 1236-1243.

Research output: Contribution to journal › Article › peer-review

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