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Research on early weak structural damage detection of aeroengine intershaft bearing based on acoustic emission technology

Author(s):



Medium: journal article
Language(s): English
Published in: Structural Health Monitoring, , n. 6, v. 20
Page(s): 147592172098035
DOI: 10.1177/1475921720980356
Abstract:

Until now, there is no effective method to detect the early weak structural damage of the aero engine intershaft bearing. In this article, an online method based on acoustic emission technology is used to detect the early weak structural damage of aeroengine intershaft bearing. The combination of maximum correlated kurtosis deconvolution and bandpass filter is proposed to enhance and denoise fault characteristic signals of the aero engine intershaft bearing. The Hilbert envelope demodulation is used to extracting the bear fault characteristic frequency. Under aeroengine working conditions, the experiment of an intershaft bearing with outer ring fault is carried out. The result shows that bearing outer ring fault characteristic frequency and bearing vibration frequencies clearly appear in the envelope spectrum of the acoustic emission signal. Therefore, online detection of early weak structure damage of aeroengine intershaft bearing is realized by acoustic emission technology under the background of strong noise.

Structurae cannot make the full text of this publication available at this time. The full text can be accessed through the publisher via the DOI: 10.1177/1475921720980356.
  • About this
    data sheet
  • Reference-ID
    10562566
  • Published on:
    11/02/2021
  • Last updated on:
    29/11/2021
 
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