Transient thermographic NDE of turbine blades

Xavier P. Maldague; Paolo G. Cielo; Denis Poussart; David Craig; R. Bourret

doi:10.1117/12.21926

1 March 1990 Transient thermographic NDE of turbine blades

Xavier P. Maldague, Paolo G. Cielo, Denis Poussart, David Craig, R. Bourret

Proceedings Volume 1313, Thermosense XII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications; (1990) https://doi.org/10.1117/12.21926
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

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.

Citation Download Citation

Xavier P. Maldague, Paolo G. Cielo, Denis Poussart, David Craig, and R. Bourret "Transient thermographic NDE of turbine blades", Proc. SPIE 1313, Thermosense XII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (1 March 1990); https://doi.org/10.1117/12.21926

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