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Proceedings Paper

Transient thermographic NDE of turbine blades
Author(s): Xavier P. Maldague; Paolo G. Cielo; Denis Poussart; David Craig; R. Bourret
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Paper Abstract

A method is proposed for the automatic inspection of jet engine turbine blades using transient infrared thermography. The blades are thermally stimulated using internal flow (water) at different temperatures. By looking on the pressure (or suction) side of the blade, it is possible to detect and locate blocked cooling passages. Differential time-resolved image analysis methods are shown to effectively improve the visibility of obstruction defects in the presence of strong temperature fluctuations across the blade. Examples of such analyse are presented.

Paper Details

Date Published: 1 March 1990
PDF: 11 pages
Proc. SPIE 1313, Thermosense XII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (1 March 1990); doi: 10.1117/12.21926
Show Author Affiliations
Xavier P. Maldague, Univ. Laval (Canada)
Paolo G. Cielo, National Research Council Canada (Canada)
Denis Poussart, Univ. Laval (Canada)
David Craig, Pratt & Whitney Canada (Canada)
R. Bourret, Univ. Laval (France)


Published in SPIE Proceedings Vol. 1313:
Thermosense XII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications
Sharon A. Semanovich, Editor(s)

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