Share Email Print
cover

Proceedings Paper

Investigation of alternative excitation sources for vibrothermography
Author(s): Marc Genest; Farid Mabrouki; Abbas Fahr; Nezih Mrad
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In this study, a mechanical shaker operating at low frequencies is demonstrated to be a viable excitation source for vibrothermography. Additionally, a low-cost transduction approach based on commercially available piezoelectric materials (PZT) is investigated. These PZT transducers are assessed for their excitation efficiency to allow crack detection in metallic structures. Cracks as small as 1 mm are detected using the mechanical shaker regardless of a beam structure orientation or crack location. Although the low-cost PZT-based transduction approach had sufficient excitation power to generate vibration, localized heat generation was not observed at crack locations.

Paper Details

Date Published: 8 April 2009
PDF: 9 pages
Proc. SPIE 7294, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009, 72940Y (8 April 2009); doi: 10.1117/12.814145
Show Author Affiliations
Marc Genest, National Research Council Canada (Canada)
Farid Mabrouki, National Research Council Canada (Canada)
Abbas Fahr, National Research Council Canada (Canada)
Nezih Mrad, Defence Research and Development Canada (Canada)


Published in SPIE Proceedings Vol. 7294:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2009
H. Felix Wu; Aaron A. Diaz; Peter J. Shull; Dietmar W. Vogel, Editor(s)

© SPIE. Terms of Use
Back to Top