468 - Study on changes of dynamic characteristics according to cracked condition in a turbine blade
Yang K., Cho C., Bae C., Kim G., Song O.
Abstract
We developed a device and method to test the cracked model for a single turbine blade used in a nuclear power plant, and analyzed experimentally and numerically dynamic characteristics according to crack length in the blade. When the experimentally obtained natural frequencies and mode shapes were compared with the FEM analysis results, it was found that they had very similarity each other. Also we analyzed dynamic characteristics of the FEM model under operation condition(rotation speed, temperature). On the basis of that, in case that a crack in the blade is developed, we can research and predict the resonance possibility due to change of dynamic characteristics.
Citation
Yang K.; Cho C.; Bae C.; Kim G.; Song O.: Study on changes of dynamic characteristics according to cracked condition in a turbine blade , CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
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