Volume 29 Issue 3
Mar.  2014
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Article Navigation >  Journal of Aerospace Power  > 2014  >  29(3): 604-611
LIANG Zhi-chao, ZHANG Zhen-bo, LIU Shu-guo, HONG Jie. Experiment and characteristics extraction of rub-impact in rotor-support-case system[J]. Journal of Aerospace Power, 2014, 29(3): 604-611. doi: 10.13224/j.cnki.jasp.2014.03.017
Citation: LIANG Zhi-chao, ZHANG Zhen-bo, LIU Shu-guo, HONG Jie. Experiment and characteristics extraction of rub-impact in rotor-support-case system[J]. Journal of Aerospace Power, 2014, 29(3): 604-611. doi: 10.13224/j.cnki.jasp.2014.03.017
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Experiment and characteristics extraction of rub-impact in rotor-support-case system

doi: 10.13224/j.cnki.jasp.2014.03.017

  • 1. School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;

  • 2. Shenyang Engine Design and Research Institute, Aviation Industry Corporation of China, Shenyang 110015, China

  • Received Date: 2013-01-09
  • Publish Date: 2014-03-28
    Abstract
  • A rotor-support-case system simulated test rig was established by considering the structure characteristics and dynamic characteristics in blade to case rub-impact of aero-engine.The responses of both slight rub-impact and serious rub-impact were measured.Time frequency analysis methods, continuous wavelet transform and wavelet packet energy were used to perform the feature extraction of rotor and case.The results indicate that the response of case contents both high frequency signal and low frequency signal. The high frequency signal in case is mainly attributable to impact during slight rub-impact,and the friction effect is improved in serious rub-impact.As a conclusion,it may play a role in rub-impact fault diagnosis and identification.

     

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