The present study investigates modeling of thermal fatigue crack by the finite element method from the view point of eddy current testing. Three artificially produced thermal fatigue cracks introduced into Inconel 600 specimens are prepared. Eddy current signals are gathered by a differential type plus point probe with 25 kHz and 100 kHz. Subsequent destructive tests show the profile of these cracks. In the numerical simulation thermal fatigue crack is modeled as a region with constant width, uniform conductivity and real profile. Results of the study combining the previous study on modeling of thermal fatigue crack in type 304 stainless steel specimen reveal that thermal fatigue crack, unlike stress corrosion crack, generally should be modeled as an almost nonconductive region regardless of frequencies. Furthermore the resistance of thermal fatigue crack defined as width divided by conductivity is almost unchanged, even though the appropriate conductivity and width are changing with the frequency.
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2013 21st International Conference on Nuclear Engineering
July 29–August 2, 2013
Chengdu, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-5578-2
PROCEEDINGS PAPER
Modeling of Thermal Fatigue Crack for Enhancement of Electromagnetic Nondestructive Evaluation of Nuclear Power Plant Available to Purchase
Jing Wang,
Jing Wang
East China University of Science and Technology, Shanghai, China
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Noritaka Yusa,
Noritaka Yusa
Tohoku University, Sendai, Miyagi, Japan
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Hongliang Pan,
Hongliang Pan
East China University of Science and Technology, Shanghai, China
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Mika Kemppainen,
Mika Kemppainen
Trueflaw Ltd., Espoo, Finland
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Iikka Virkkunen,
Iikka Virkkunen
Trueflaw Ltd., Espoo, Finland
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Hidetoshi Hashizume
Hidetoshi Hashizume
Tohoku University, Sendai, Miyagi, Japan
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Jing Wang
East China University of Science and Technology, Shanghai, China
Noritaka Yusa
Tohoku University, Sendai, Miyagi, Japan
Hongliang Pan
East China University of Science and Technology, Shanghai, China
Mika Kemppainen
Trueflaw Ltd., Espoo, Finland
Iikka Virkkunen
Trueflaw Ltd., Espoo, Finland
Hidetoshi Hashizume
Tohoku University, Sendai, Miyagi, Japan
Paper No:
ICONE21-16033, V001T01A026; 4 pages
Published Online:
February 7, 2014
Citation
Wang, J, Yusa, N, Pan, H, Kemppainen, M, Virkkunen, I, & Hashizume, H. "Modeling of Thermal Fatigue Crack for Enhancement of Electromagnetic Nondestructive Evaluation of Nuclear Power Plant." Proceedings of the 2013 21st International Conference on Nuclear Engineering. Volume 1: Plant Operations, Maintenance, Engineering, Modifications, Life Cycle and Balance of Plant; Nuclear Fuel and Materials; Radiation Protection and Nuclear Technology Applications. Chengdu, China. July 29–August 2, 2013. V001T01A026. ASME. https://doi.org/10.1115/ICONE21-16033
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