Impact damage detection in composite chiral sandwich panels using nonlinear vibro-acoustic modulations

Klepka Andrzej, Wieslaw Staszewski, Dario Di Maio, Fabrizio Scarpa

Research output: Contribution to journalArticle (Academic Journal)peer-review

66 Citations (Scopus)

Abstract

This paper reports an application of nonlinear acoustics to impact damage detection in a composite chiral sandwich panel. The panel is built from a chiral honeycomb and two composite skins. High-frequency ultrasonic excitation and low-frequency modal excitation were used to observe nonlinear modulations in ultrasonic waves due to structural damage. Low-profile, surface-bonded piezoceramic transducers were used for ultrasonic excitation. Non-contact laser vibrometry was applied for ultrasonic sensing. The work presented focuses on the analysis of the modulation intensities and damage-related nonlinearities. The paper demonstrates that the method can be used for impact damage detection in composite chiral sandwich panels.
Original languageEnglish
Article number084011
Number of pages13
JournalSmart Materials and Structures
Volume22
Issue number8
DOIs
Publication statusPublished - Aug 2013

Keywords

  • CRACK DETECTION
  • HONEYCOMBS
  • ULTRASOUND
  • ACOUSTICS
  • BEHAVIOR
  • WAVES

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