A method for vibration-based structural interrogation and health monitoring based on signal cross-correlation

Irina Trendafilova

Research output: Contribution to journalArticle

3 Citations (Scopus)
228 Downloads (Pure)

Abstract

Vibration-based structural interrogation and health monitoring is a field which is concerned with the estimation of the current state of a structure or a component from its vibration response with regards to its ability to perform its intended function appropriately. One way to approach this problem is through damage features extracted from the measured structural vibration response. This paper suggests to use a new concept for the purposes of vibration-based health monitoring. The correlation between two signals, an input and an output, measured on the structure is used to develop a damage indicator. The paper investigates the applicability of the signal cross-correlation and a nonlinear alternative, the average mutual information between the two signals, for the purposes of structural health monitoring and damage assessment. The suggested methodology is applied and demonstrated for delamination detection in a composite beam.
Original languageEnglish
Article number012005
JournalJournal of Physics Conference Series
Volume305
Issue number1
DOIs
Publication statusPublished - 19 Jul 2011
Event9th International Conference on Damage Assessment of Structures, DAMAS 2011 - Oxford, , United Kingdom
Duration: 11 Jul 201113 Jul 2011

Keywords

  • engineering
  • vibration
  • structural integrity
  • composite beam

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