한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제19권12호
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  • Pages.1281-1288
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  • 2009
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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저압터빈 블레이드의 균열 길이에 따른 동특성 변화

Variation of Dynamic Characteristics of a Low Pressure Turbine Blade with Crack Length

  • 양경현 (한전 전력연구원 엔지니어링센터) ;
  • 송오섭 (충남대학교 기계공학과)
  • 발행 : 2009.12.20
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초록

Variation of dynamic characteristics of a low pressure turbine blade with crack length is studied in this paper via both experiments and finite element model. Since most of the turbine blades used in domestic power plants are imported from abroad, it is necessary to understand their dynamic behavior in advance. When experimentally obtained natural frequencies and mode shapes are compared with those from FEM results, they are close to each other in their magnitude. Then, it is more feasible to use finite element model for analyzing the dynamic characteristics of a blade under various operation conditions (rotation speed, temperature, etc) as well as with a crack in the blade.

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참고문헌

  1. Yang, K. H., Cho, C. H., Bae, C. H., Kim, G. Y., Lee, W. R. and Song, O. S., 2006, 'Study on Change of Dynamic Characteristics According to Cracked Condition in Turbine Blades,' Proceedings of ICSV 13, RS08, 468
  2. Ha, H. C., Lee, D. J. and Ryu, S. J., 2001, 'An Experimental Study for Preventing the Resonance of Steam Turbine Blade,' Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 11, No. 3, pp. 410-415
  3. Dewey, R. P., McCloskey, T. H. and Rieger, N. F., 1983, 'Analysis of Steam Turbine Blade Failures in the Utility Industry,' ASME paper 83-JPGC-PWR-20
  4. Donato, V., Bannister, R. L. and DeMartini, J. F., 1981, 'Measuring Blade Vibration of Large Low Pressure Steam Turbines,' Power Engineering, March
  5. Rozelle, P. F., Evans, D. H. and Seth, B. B., 1989, 'Development and Application of a Blade Vibration Monitor,' ASME Publication PWR, Vol. 7, pp. 37-45
  6. Lee, A. S., Kim, Y. C., Lee, D. W. and Na, U. J., 2003, 'Evaluation of Blades Vibration Reliabilities of KGT-74 Small Gas Turbine,' Proceedings of the KSNVE Annual Spring Conference, pp. 297-302
  7. Kim, G. Y., et al, 1996, 'Workshop for Replacement of Low Pressure Turbine Rotor in Kori Nuclear Power Plant,' Technical Memo of KEPCO
  8. Rao, J. S., 1991, 'Turbomachine Blade Vibration,' JOHN WILEY & SONS, pp. 18-66

피인용 문헌

  1. Characteristics of Blade Force by Nozzle Passing Steam vol.23, pp.10, 2013, https://doi.org/10.5050/KSNVE.2013.23.10.895