Turbine blade assessment system

Details Turbine blade assessment system Turbine blade assessment system

G - Physics

01

N

G01N 27/02 (2006.01) G01N 27/90 (2006.01)

Patent

CA 2072029

56,214 ABSTRACT OF THE DISCLOSURE The present invention provides a method and apparatus for performing nondestructive material assessment of service exposed combustion turbine blades. According to the invention, the testing is accomplished by inserting eddy current (EC) probes into the blade's cooling holes, and evaluating the eddy current response of the blade. The eddy current probes are preferably coupled together in a differential mode. The measured response is then compared with a previously determined response corresponding with a known material condition. An assessment of the blade is made on the basis of this comparison.

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