Delamination assessment in structures made of composites based on signal cross-correlation

Irina Trendafilova, Roberto Pallazetti

Research output: Contribution to conferencePaper

2 Citations (Scopus)
33 Downloads (Pure)

Abstract

This paper considers the application of a vibration-based damage assessment approach based on signal correlation for the purposes of delamination assessment in composite structures. The method uses the cross-correlation between two signals measured in different points on the structure in order to diagnose the delamination. The linear cross-correlation as well as a new measure for nonlinear cross-correlation, the average mutual information are introduced and applied for the purposes of delamination assessment. The delamination assessment is based on the comparison of the measures for the healthy and the damaged state of the structure. Both methods are experimentally validated for the case of a composite beam made of carbon fiber. The two measures are applied with measured free decay acceleration responses. They are used for delamination detection and localization.
Original languageEnglish
Publication statusPublished - 17 Sep 2012
EventISMA2012 International Conference on Noise and Vibration Engineering - Leuven, Belgium
Duration: 17 Sep 201219 Sep 2012

Conference

ConferenceISMA2012 International Conference on Noise and Vibration Engineering
CountryBelgium
CityLeuven
Period17/09/1219/09/12

Keywords

  • vibration-based damage
  • delamination assessment
  • signal cross-correlation

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  • Cite this

    Trendafilova, I., & Pallazetti, R. (2012). Delamination assessment in structures made of composites based on signal cross-correlation. Paper presented at ISMA2012 International Conference on Noise and Vibration Engineering, Leuven, Belgium.