Bifurcation boundary analysis as a nonlinear damage detection feature: Does it work?


Journal Article

Many systems in engineering and science are inherently nonlinear and require damage detection. For such systems, nonlinear damage detection methods may be useful. A bifurcation boundary analysis method as a new nonlinear damage detection tool was previously introduced in the literature to track bifurcation boundary changes due to damages over a small region of an aeroelastic panel model. Results of this method based upon a finite difference solution showed higher sensitivities to the small amount of damage than methods based upon linear models. In this paper, four methods including Finite Difference, Finite Element (FEM), Rayleigh-Ritz and Galerkin Approach are used to further investigate the sensitivity of the bifurcation boundary for damage detection. Results of the FEM and Rayleigh-Ritz method agree with each other and also show that the sensitivity of the bifurcation boundary to damage is much less than what previously reported when using a finite difference solution method. © 2010 Elsevier Ltd.

Full Text

Duke Authors

Cited Authors

  • Eftekhari, SA; Bakhtiari-Nejad, F; Dowell, EH

Published Date

  • February 1, 2011

Published In

Volume / Issue

  • 27 / 2

Start / End Page

  • 297 - 310

Electronic International Standard Serial Number (EISSN)

  • 1095-8622

International Standard Serial Number (ISSN)

  • 0889-9746

Digital Object Identifier (DOI)

  • 10.1016/j.jfluidstructs.2010.11.006

Citation Source

  • Scopus