In residual life evaluation of fossil power plants, improvement of accuracy of creep damage evaluation is extremely important. One of the powerful non-destructive evaluation methods is hardness test. This method is effective because it enables us the on-site evaluation and the results are obtained without laborious work. However, in order to make it more powerful method, improvement of accuracy is inevitable. In this paper, the Vickers hardness test not at ambient but at high temperature is applied to the deteriorated rotor material and the method for the residual life evaluation with high accuracy is newly developed. In the method, creep constitutive law is determined from the results of hot hardness test first. Next, the variation of constitutive law with the creep damage is investigated. Finally, the dependency of exponent of constitutive law on the creep damage is shown and the method to evaluate the creep damage from this dependency will be proposed.
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ASME/JSME 2004 Pressure Vessels and Piping Conference
July 25–29, 2004
San Diego, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4682-2
PROCEEDINGS PAPER
Application of Hot Hardness Test to the Evaluation of Creep Damage in Cr-Mo-V Turbine Rotor of Fossil Power Plant
Shinsuke Sakai,
Shinsuke Sakai
University of Tokyo, Tokyo, Japan
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Satoshi Izumi,
Satoshi Izumi
University of Tokyo, Tokyo, Japan
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Takashi Murakami,
Takashi Murakami
Nintendo Company, Japan
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Yu Watanabe
Yu Watanabe
University of Tokyo, Tokyo, Japan
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Shinsuke Sakai
University of Tokyo, Tokyo, Japan
Satoshi Izumi
University of Tokyo, Tokyo, Japan
Takashi Murakami
Nintendo Company, Japan
Akito Nitta
CRIEPI, Japan
Junichi Kusumoto
CRIEPI, Japan
Yu Watanabe
University of Tokyo, Tokyo, Japan
Paper No:
PVP2004-2984, pp. 189-194; 6 pages
Published Online:
August 12, 2008
Citation
Sakai, S, Izumi, S, Murakami, T, Nitta, A, Kusumoto, J, & Watanabe, Y. "Application of Hot Hardness Test to the Evaluation of Creep Damage in Cr-Mo-V Turbine Rotor of Fossil Power Plant." Proceedings of the ASME/JSME 2004 Pressure Vessels and Piping Conference. Aging Management and License Renewal. San Diego, California, USA. July 25–29, 2004. pp. 189-194. ASME. https://doi.org/10.1115/PVP2004-2984
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