Volume 27 Issue 3
Mar.  2012
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HONG Jie, LIU Shu-guo, ZHANG Da-yi, CHEN Meng. Fatigue failure analysis of turbine blade in miniature short-life turbofan engine[J]. Journal of Aerospace Power, 2012, 27(3): 604-609.
Citation: HONG Jie, LIU Shu-guo, ZHANG Da-yi, CHEN Meng. Fatigue failure analysis of turbine blade in miniature short-life turbofan engine[J]. Journal of Aerospace Power, 2012, 27(3): 604-609.

Fatigue failure analysis of turbine blade in miniature short-life turbofan engine

  • Received Date: 2011-04-27
  • Rev Recd Date: 2011-07-12
  • Publish Date: 2012-03-28
  • For the fracture fault of the high-pressure turbine blade in the miniature short-life turbofan engine during a certain rig test,the blade fractography,the vibration signal and the fault blade dynamics was observed and analyzed.Blades natural characteristics and exciting sources were analyzed in details;the faults mainly stemmed from fatigue for the 1st order,the 2nd order and the coupled mode vibrations due to the instantaneous severe rub impact force.Reasonable control of the clearance and improving the blade root damping can prevent the fault effectively.

     

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