Integration of Governing Differential Equations of Continuum Mechanics with Scanning Laser Vibrometry Technology for Monitoring of Structural Damage

Stuart Wildy, Hannah Weisbecker, Benjamin Cazzolato, Andrei Kotousov

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)

Abstract

This paper discusses an algorithm based on the fundamental principles of continuum mechanics (viz. strain compatibility and conditions of equilibrium) in identifying delamination in composite beams. Using a 3D scanning laser vibrometer, the out-of-plane deflections of a composite panel can be measured. Utilising a Savitzky-Golay filter and the out-of-plane deflections, the algorithm is able to determine violations of the fundamental principles and therefore, indicating damage such as a void, crack or delamination. An experimental investigation was conducted utilising the algorithm for the detection of delamination in a composite beam and was verified with simulation. Keywords: delamination, equilibrium, governing differential equation, laminated composite, laser vibrometry, laminated composite, Savitzky-Golay filter, strain compatibility.
Original languageEnglish
Number of pages10
Publication statusPublished - 2009
Externally publishedYes
EventNDT in Progress 2009: 5th International Workshop of NDT Experts - Prague, Czech Republic
Duration: 12 Oct 200914 Oct 2019
Conference number: 5th
https://www.ndt.net/search/docs.php3?MainSource=90&showForm= (Conference link)

Conference

ConferenceNDT in Progress 2009
Country/TerritoryCzech Republic
CityPrague
Period12/10/0914/10/19
Internet address

Keywords

  • Delamination
  • Equilibrium
  • Governing differential equation
  • laminated composite
  • Laser vibrometry
  • Savitzky-Golay filter
  • Strain compatibility

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