Delamination assessment in structures made of composites based on general signal correlation

Irina Trendafilova, Roberto Palazzetti, Andrea Zucchelli

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

This paper considers a vibration-based damage assessment approach which is based on the general idea for signal cross-correlation. Here the method is demonstrated and validated on a composite laminate beam and it is applied for the purposes of delamination assessment in composite structures. The method uses two measures of cross-correlation between two vibration 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 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. In this study the method is applied using the free decay responses of the beam. Two delamination indexes are introduced and they are used for the purposes of delamination detection and localization.
LanguageEnglish
Article number1440022
Number of pages13
JournalInternational Journal of Structural Stability and Dynamics
Volume14
Issue number8
Early online date17 Jul 2014
DOIs
Publication statusPublished - 2014

Fingerprint

Delamination
Composite
Cross-correlation
Composite materials
Damage Assessment
Composite Laminates
Vibration Signal
Composite Structures
Composite structures
Mutual Information
Laminates
Vibration
Decay

Keywords

  • vibration based structural health monitoring
  • delamination
  • cross correlation
  • composite laminates
  • delamination assessment
  • composites
  • general signal correlation
  • vibration-based structural health monitoring

Cite this

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Delamination assessment in structures made of composites based on general signal correlation. / Trendafilova, Irina; Palazzetti, Roberto; Zucchelli, Andrea.

In: International Journal of Structural Stability and Dynamics , Vol. 14, No. 8, 1440022, 2014.

Research output: Contribution to journalArticle

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