Highly efficient ultrasonic vibrothermography for detecting impact damage in hybrid composites

D. A. Derusova, V. P. Vavilov, S. Sfarra, F. Sarasini, N. V. Druzhinin, V. O. Nekhoroshev

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


The use of wide frequency band piezoelectric transducers in ultrasonic infrared thermography allows analyzing material structural defects under low power ultrasonic stimulation compared to single-frequency stimulation which is performed, for example, by means of powerful magnetostrictive stimulation. Defect resonance frequencies can be determined through the detailed analysis of material surface vibrations by using a technique of laser vibrometry in a wide range of frequencies. This paper describes the approach to analyze ultrasonic resonances in samples with hidden defects by using resonant piezoelectric transducers. The effectiveness of the method is assessed by discussing some key examples of impact damaged graphite/epoxy composite samples hybridized with flax fibers. Optical and powerful ultrasonic stimulation have been also used as alternative inspection techniques.

Original languageEnglish
Title of host publicationThermosense
Subtitle of host publicationThermal Infrared Applications XXXIX
ISBN (Electronic)9781510609297
Publication statusPublished - 2017
EventThermosense: Thermal Infrared Applications XXXIX 2017 - Anaheim, United States
Duration: 10 Apr 201713 Apr 2017


ConferenceThermosense: Thermal Infrared Applications XXXIX 2017
CountryUnited States


  • flax fiber
  • graphite/epoxy composite
  • impact damage
  • local resonance
  • Ultrasonic infrared thermography
  • vibrothermography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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