Test Of Jet Engine Turbine Blades By Thermography

Kurt Ding

doi:10.1117/12.7973629

1 December 1985 Test Of Jet Engine Turbine Blades By Thermography

Kurt Ding

Author Affiliations +

Optical Engineering, Vol. 24, Issue 6, 241055 (December 1985). https://doi.org/10.1117/12.7973629

Abstract

Two applications of thermography for testing and development of turbomachinery components are described: (1) Fabrication defects in the cooling system of internally cooled turbine blades are detected by transient heating of the blade and measurement of its surface temperature distribution by an infrared imaging system. Defects like blocking, narrowing, widening, and mispositioning of cooling channels can clearly be identified by the disturbance of the transient surface temperature distribution of the blade. (2) To improve the cooling configuration of turbine blades, the cooling effectiveness over the total blade surface must be determined under test conditions similar to those in the turbomachine. The infrared measurement of blade surface temperature distributions in a hot air cascade and the method to correct the infrared intensities for radiation reflected at the measuring surface are illustrated in an example.

Citation Download Citation

Kurt Ding "Test Of Jet Engine Turbine Blades By Thermography," Optical Engineering 24(6), 241055 (1 December 1985). https://doi.org/10.1117/12.7973629

Published: 1 December 1985

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE