Identification of delamination depth in a composite laminated panel using vibration measurements and the duffing oscillator

Xuan Li, Dunant Halim

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review

Abstract

The work aims to investigate the use of a vibration-based damage detection method incorporating a chaotic oscillator for identifying the depth of delamination in a composite laminated panel. A type of non-linear oscillator, called the Duffing oscillator, is used for analyzing vibration signals measured from a composite laminate in order to identify the depth of delamination due to its excellent sensitivity to the dynamic change in vibration signals and its robustness to measurement noise. A composite laminated panel with delamination at varying composite layers is investigated through numerical simulation studies. The measured vibration signal is analyzed by using the Duffing oscillator and the change of its dynamic characteristics with respect to delamination depth is measured by using the Lyapunov Exponent (LE) feature. The relationship between the LE feature and the depth of delamination is investigated. The results demonstrate the effectiveness of the method for identifying the depth of delamination in composite laminates based on vibration measurements.

Original languageEnglish
Title of host publication"Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021
EditorsEleonora Carletti, Malcolm Crocker, Marek Pawelczyk, Jiri Tuma
PublisherSilesian University Press
ISBN (Electronic)9788378807995
Publication statusPublished - 2021
Event27th International Congress on Sound and Vibration, ICSV 2021 - Virtual, Online
Duration: 11 Jul 202116 Jul 2021

Publication series

Name"Advances in Acoustics, Noise and Vibration - 2021" Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021

Conference

Conference27th International Congress on Sound and Vibration, ICSV 2021
CityVirtual, Online
Period11/07/2116/07/21

Keywords

  • Delamination
  • Duffing oscillator
  • Lyapunov exponent (LE)
  • Vibration-based method

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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