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Investigation of the High Cycle Fatigue Crack of the Gas Turbine Compressor Blade Using Finite Element Analysis  

Yun, Wan-No (KEPCO Research Institute)
Kim, Jun-Sung (KEPCO Research Institute)
Publication Information
Journal of the Korean Society for Precision Engineering / v.27, no.12, 2010 , pp. 107-112 More about this Journal
Abstract
A gas turbine consists of an upstream compressor and a downstream turbine with a combustion chamber, and also the compressor and the turbine are generally coupled using a single shaft. Large scale gas turbine compressor is designed as multi-stage axial flow and the blade is fan-type which is thick and wide. Recently radial cracking happens occasionally at the compressor blade tip of large scale gas turbine. So, FEM was performed on the compressor blade and vibration modes and dynamic stresses were analyzed. According to the analysis, 9th natural frequency mode of the blade, which is 2 strip mode, is near the vane passing frequency by the vane located at the upstream of the blade.
Keywords
Combined Cycle Power Plant; Gas Turbine; Compressor Blade; High Cycle Fatigue Crack; Finite Element Analysis;
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  • Reference
1 Ewins, D. J., "Vibrational Modes of Mistuned Bladed Disks," Americas Society of Mechanical Engineers pp. 75-114, 1975.
2 Scheibel, J. and Dewey, R., "Status on Compressor Blade Failure Investigation," Electric Power Researtric Institute, pp. 18-29, 2007.
3 Gandy, D., Scheibel, J. and Dewey, B., "R0 Compressor Blade Failure Investigation," Electric Power Researtric Institute, p. 15, 2007.
4 Gandy, D., "R0 Compressor Blade Failure Investigation," Electric Power Researtric Institute, p. 94, 2006.
5 Cencula, J., "Compressor Update," 7F Gas Turbine User's Group, p. 10, 2002.
6 Hong, C., Pollard, M., Adkins, G and McCloskey, T., "Minimization of Harmonic Excitation of Nozzle Gagings," Proceedings of the American Power Conference, pp. 1146-1156, 2001.
7 Schirle, S., "Compressor Update," 7F Gas Turbine User's Group Conference, pp. 2-6, 2006.
8 Gandy, D. and Scheibel, J., "Gas Turbine Compressor Dependability," EPRI 1016159, pp. 4.1-4.7, 2008.