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Proceedings Paper

Hybrid imaging of damage progress in composites through thermal imaging and embedded sensing
Author(s): S. Pawar; K. Peters
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Paper Abstract

In this paper, we investigate the fusion of imaging data from pulsed phase thermography (PPT) with local temperature data obtained from embedded fiber Bragg grating (FBG) sensors for non-destructive evaluation of composite structures. We use the square pulse heating applied for the PPT imaging as the input thermal wave for both the imaging and sensing processes. In addition, the role of the local microstructure surrounding the FBG on the measured wavelength shift as a function of temperature is derived analytically. Fusing the FBG wavelength response with the PPT data at the corresponding pixel and depth is shown to provide a unique characterization of the local material condition.

Paper Details

Date Published: 11 April 2013
PDF: 10 pages
Proc. SPIE 8693, Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2013, 869307 (11 April 2013); doi: 10.1117/12.2010016
Show Author Affiliations
S. Pawar, North Carolina State Univ. (United States)
K. Peters, North Carolina State Univ. (United States)


Published in SPIE Proceedings Vol. 8693:
Smart Sensor Phenomena, Technology, Networks, and Systems Integration 2013
Kara J. Peters; Wolfgang Ecke; Theodoros E. Matikas, Editor(s)

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