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Damage detection of an aeroelastic panel using limit cycle oscillation analysis

Publication ,  Journal Article
Eftekhari, SA; Bakhtiari-Nejad, F; Dowell, EH
Published in: International Journal of Non-Linear Mechanics
January 1, 2014

Most of real systems are non-linear and they require damage detection. For such non-linear systems, non-linear damage detection methods are necessary for more accurate results. In this paper, a novel non-linear method is introduced using limit cycle oscillations that arise once the bifurcation (flutter) boundary is exceeded and shows greater sensitivity for damage detection versus linear damage detection techniques. Another advantage of this method is that it can be used for health monitoring of linear or non-linear systems. Here a non-linear aeroelastic panel is considered as a model to show the capabilities of the proposed damage detection technique. Also Proper Orthogonal Decomposition (POD) is used to find the number of independent damage locations in the panel. Rayleigh-Ritz method is used to discretizing spatial domain of the system. Damage is modeled as stiffness reduction in the certain region. By comparing Limit Cycle Oscillation of healthy and damaged panel damage level and its location could be obtained with good sensitivity. © 2013 Elsevier Ltd. All rights reserved.

Duke Scholars

Published In

International Journal of Non-Linear Mechanics

DOI

ISSN

0020-7462

Publication Date

January 1, 2014

Volume

58

Start / End Page

99 / 110

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4901 Applied mathematics
  • 4017 Mechanical engineering
  • 4005 Civil engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0102 Applied Mathematics
 

Citation

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Eftekhari, S. A., Bakhtiari-Nejad, F., & Dowell, E. H. (2014). Damage detection of an aeroelastic panel using limit cycle oscillation analysis. International Journal of Non-Linear Mechanics, 58, 99–110. https://doi.org/10.1016/j.ijnonlinmec.2013.09.008
Eftekhari, S. A., F. Bakhtiari-Nejad, and E. H. Dowell. “Damage detection of an aeroelastic panel using limit cycle oscillation analysis.” International Journal of Non-Linear Mechanics 58 (January 1, 2014): 99–110. https://doi.org/10.1016/j.ijnonlinmec.2013.09.008.
Eftekhari SA, Bakhtiari-Nejad F, Dowell EH. Damage detection of an aeroelastic panel using limit cycle oscillation analysis. International Journal of Non-Linear Mechanics. 2014 Jan 1;58:99–110.
Eftekhari, S. A., et al. “Damage detection of an aeroelastic panel using limit cycle oscillation analysis.” International Journal of Non-Linear Mechanics, vol. 58, Jan. 2014, pp. 99–110. Scopus, doi:10.1016/j.ijnonlinmec.2013.09.008.
Eftekhari SA, Bakhtiari-Nejad F, Dowell EH. Damage detection of an aeroelastic panel using limit cycle oscillation analysis. International Journal of Non-Linear Mechanics. 2014 Jan 1;58:99–110.
Journal cover image

Published In

International Journal of Non-Linear Mechanics

DOI

ISSN

0020-7462

Publication Date

January 1, 2014

Volume

58

Start / End Page

99 / 110

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4901 Applied mathematics
  • 4017 Mechanical engineering
  • 4005 Civil engineering
  • 0913 Mechanical Engineering
  • 0905 Civil Engineering
  • 0102 Applied Mathematics