Volume 32 Issue 6
Jun.  2017
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Experimental design and verification of hollow fan blade high cycle fatigue[J]. Journal of Aerospace Power, 2017, 32(6): 1359-1365. doi: 10.13224/j.cnki.jasp.2017.06.011
Citation: Experimental design and verification of hollow fan blade high cycle fatigue[J]. Journal of Aerospace Power, 2017, 32(6): 1359-1365. doi: 10.13224/j.cnki.jasp.2017.06.011

Experimental design and verification of hollow fan blade high cycle fatigue

doi: 10.13224/j.cnki.jasp.2017.06.011
  • Received Date: 2015-09-22
  • Publish Date: 2017-06-28
  • Based on the structure feature of wide chord blade of actual high bypass ratio turbo-fan engine, the design and manufacturing of hollow fan blade specimen were finished, followed by high cycle fatigue experimental design and emphasized verification of the fatigue endurance of hollow structure. The experiment results indicate that the design of fixture and fan blade specimen could accomplish the high cycle fatigue experiment on hollow fan blade. Meanwhile, the high cycle fatigue strength of the hollow fan blade which lies between 370MPa and 400MPa for 1×107 cycle could fulfill the high cycle fatigue design requirement that the hollow fan blade should have high cycle fatigue strength no less than 324MPa under maximum operating condition. However, due to the lack of sufficient quantity of specimens, high cycle fatigue data were only derived under limited stress levels. Further research could be carried out similarly with increased quantity to estimate the fatigue endurance and then construct the stress-fatigue curve, providing prime data base for engineering research.

     

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