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Arabian Journal for Science and Engineering

, Volume 44, Issue 2, pp 1709–1712 | Cite as

On the Crack Propagation in Rotating Shafts Supported by Fluid Film Bearings Using High-Frequency Acoustic Emission Analysis

  • Marco Tulio C. Faria
  • Gilberto L. S. Pimentel-Junior
Technical Note - Mechanical Engineering
  • 6 Downloads

Abstract

This note presents a brief experimental investigation on the crack propagation monitoring in rotating shafts supported by fluid film bearings using high-frequency acoustic emission signals. Wavelet decomposition of the acoustic emission signals is performed for six shafts with different crack depths rotating at subcritical and supercritical speeds. The median absolute deviations of the signals are employed in an attempt to relate the crack depth with the values of the statistical median deviation. The preliminary experimental results show that the median absolute deviation can be an adequate statistical function to analyze the crack propagation in high-speed rotating shafts.

Keywords

Acoustic emission Cracks Wavelet Shafts Fluid film bearings 

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Notes

Acknowledgements

The authors express their sincere thanks to Frederico Bolsoni de Oliveira, student of Aerospace Engineering at UFMG, for his help and support in the experimental tests performed on this work.

References

  1. 1.
    An, Y.; Gu, D.; Lee, J.-M.; Ha, J.-M.; Kim, Y.-H.; Ahn, B.H.; Noh, J.-P.; Choi, B.-K.: Development and application of intensified envelope analysis for the condition monitoring system using acoustic emission signal. J. Mech. Sci. Technol. 28, 4431–4439 (2014).  https://doi.org/10.1007/s12206-015-0151-9 CrossRefGoogle Scholar
  2. 2.
    Sturm, A.; Uhleman, S.: Diagnosis of plain bearings by acoustic emission analysis. Measurement 3, 185–191 (1985).  https://doi.org/10.1016/0263-2241(85)90030-2 CrossRefGoogle Scholar
  3. 3.
    Mirhadizadeh, S.A.; Moncholi, E.P.; Mba, D.: Influence of operational variables in a hydrodynamic bearing on the generation of acoustic emission. Tribol. Int. 43, 1760–1767 (2010).  https://doi.org/10.1016/j.triboint.2010.03.003 CrossRefGoogle Scholar
  4. 4.
    Rezinskikh, V.F.; Luk’yanenko, V.A.; Sarkisyan, V.A.: A technique for nondestructive testing of intermediate and low-pressure rotors of turbines at thermal power plants without dismounting shrunk-on disks during maintenance. Power Technol. Eng. 47, 367–372 (2014).  https://doi.org/10.1007/s10749-014-0455-4 CrossRefGoogle Scholar
  5. 5.
    Lu, W.; Chu, F.: Shaft crack identification based on vibration and AE signals. Shock Vib. 18, 115–126 (2011).  https://doi.org/10.3233/SAV-2010-0580 CrossRefGoogle Scholar
  6. 6.
    Faria, M.T.C.; Silva, L.F.A.T.; Machado, L.H.J.: Experimental vibration and monitoring analysis of high-speed turbomachinery using a rotor test rig. SAE Tech. Pap. 76, 1–6 (2005).  https://doi.org/10.4271/2005-01-4017 Google Scholar
  7. 7.
    Pimentel-Junior, G.L.S.; Oliveira, F.B.; Faria, M.T.C.: On the bump tests of cracked shafts using acoustic emission techniques. Engineering 8, 572–581 (2014).  https://doi.org/10.4236/eng.2016.89053 CrossRefGoogle Scholar
  8. 8.
    Sawicki, J.T.; Sen, A.K.; Litak, G.: Multiresolution wavelet analysis of the dynamics of a cracked rotor. Int. J. Rotat. Mach. 2009, 1–8 (2009).  https://doi.org/10.1155/2009/265198 CrossRefGoogle Scholar
  9. 9.
    Chacon, J.L.F.; Kappatos, V.; Balachandran, V.W.; Tat-Hean, G.: A novel approach for incipient detection in rolling bearings using acoustic emission technique. Appl. Acoust. 89, 88–100 (2015).  https://doi.org/10.1016/j.apacoust.2014.09.002 CrossRefGoogle Scholar

Copyright information

© King Fahd University of Petroleum & Minerals 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringUniversidade Federal de Minas GeraisBelo HorizonteBrazil

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