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Proceedings Paper

Highly efficient ultrasonic vibrothermography for detecting impact damage in hybrid composites
Author(s): D. A. Derusova; V. P. Vavilov; S. Sfarra; F. Sarasini; N. V. Druzhinin; V. O. Nekhoroshev
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Paper Abstract

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.

Paper Details

Date Published: 5 May 2017
PDF: 10 pages
Proc. SPIE 10214, Thermosense: Thermal Infrared Applications XXXIX, 102140N (5 May 2017); doi: 10.1117/12.2262423
Show Author Affiliations
D. A. Derusova, Tomsk Polytechnic Univ. (Russian Federation)
Tomsk State Univ. (Russian Federation)
V. P. Vavilov, Tomsk Polytechnic Univ. (Russian Federation)
Tomsk State Univ. (Russian Federation)
S. Sfarra, Tomsk Polytechnic Univ. (Russian Federation)
Univ. of Aquila (Italy)
F. Sarasini, Sapienza Univ. of Rome (Italy)
N. V. Druzhinin, Institute of Strength Physics and Materials Science (Russian Federation)
V. O. Nekhoroshev, Institute of High Current Electronics (Russian Federation)

Published in SPIE Proceedings Vol. 10214:
Thermosense: Thermal Infrared Applications XXXIX
Paolo Bison; Douglas Burleigh, Editor(s)

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