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Title: Natural Crack Sizing Based on Eddy Current Image and Electromagnetic Field Analyses

Abstract

An eddy current testing (ECT) system with multi-coil type probes is applied to size up cracks fabricated on austenite stainless plates. We have developed muti-channel ECT system to produce data as digital images. The probes consist of transmit-receive type sensors as elements to classify crack directions, working as two scan direction modes simultaneously. Template matching applied to the ECT images determines regions of interest in sizing up cracks. Finite element based inversion sizes up the crack depth from the measured ECT signal. The present paper demonstrates this approach for fatigue crack and stress corrosion cracking.

Authors:
; ;  [1]; ; ;  [2]
  1. Institute of Fluid Science, Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai (Japan)
  2. Power and Industrial Systems, R and D Laboratory, Hitachi, Ltd., Hitachi, Ibaraki (Japan)
Publication Date:
OSTI Identifier:
20798264
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 820; Journal Issue: 1; Conference: Conference on review of progress in quantitative nondestructive evaluation, Brunswick, ME (United States), 31 Jul - 5 Aug 2005; Other Information: DOI: 10.1063/1.2184598; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AUSTENITE; AUSTENITIC STEELS; CRACKS; EDDY CURRENT TESTING; FATIGUE; FINITE ELEMENT METHOD; IMAGE PROCESSING; STRESS CORROSION

Citation Formats

Endo, H., Uchimoto, T., Takagi, T., Nishimizu, A., Koike, M., and Matsui, T. Natural Crack Sizing Based on Eddy Current Image and Electromagnetic Field Analyses. United States: N. p., 2006. Web. doi:10.1063/1.2184598.
Endo, H., Uchimoto, T., Takagi, T., Nishimizu, A., Koike, M., & Matsui, T. Natural Crack Sizing Based on Eddy Current Image and Electromagnetic Field Analyses. United States. doi:10.1063/1.2184598.
Endo, H., Uchimoto, T., Takagi, T., Nishimizu, A., Koike, M., and Matsui, T. Mon . "Natural Crack Sizing Based on Eddy Current Image and Electromagnetic Field Analyses". United States. doi:10.1063/1.2184598.
@article{osti_20798264,
title = {Natural Crack Sizing Based on Eddy Current Image and Electromagnetic Field Analyses},
author = {Endo, H. and Uchimoto, T. and Takagi, T. and Nishimizu, A. and Koike, M. and Matsui, T.},
abstractNote = {An eddy current testing (ECT) system with multi-coil type probes is applied to size up cracks fabricated on austenite stainless plates. We have developed muti-channel ECT system to produce data as digital images. The probes consist of transmit-receive type sensors as elements to classify crack directions, working as two scan direction modes simultaneously. Template matching applied to the ECT images determines regions of interest in sizing up cracks. Finite element based inversion sizes up the crack depth from the measured ECT signal. The present paper demonstrates this approach for fatigue crack and stress corrosion cracking.},
doi = {10.1063/1.2184598},
journal = {AIP Conference Proceedings},
number = 1,
volume = 820,
place = {United States},
year = {Mon Mar 06 00:00:00 EST 2006},
month = {Mon Mar 06 00:00:00 EST 2006}
}