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Nondestructive Depth Profiling of the Protective Coating on a Turbine Blade

  • Anthony Sinclair
  • Michael O’Brien
  • Victor DaSilva
Chapter
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series

Abstract

Turbine blades in an aircraft engine are typically made of a nickel-based alloy, and covered with a protective coating to increase oxidation and hot corrosion resistance. The coating is on the order of 50–100 μm thick. There is currently no nondestructive method available to verify that the blade coating thickness is within specifications, or that the proper interfacial boundary has been set up between the coating and base alloy.

Keywords

Reflection Coefficient Coating Thickness Turbine Blade Protective Coating Compression Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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    A.N. Sinclair and M. Graf, J. Research in NDE 1, 31 (1989).Google Scholar
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    A.N. Sinclair, P. Dickstein, and M. Graf, to be published in Proc. MRS Fall Symp., Boston (1988).Google Scholar
  3. 3.
    L.M. Brekhovskikh, Waves in Layered Media, ( Academic Press, New York, 1980 ).MATHGoogle Scholar
  4. 4.
    H. Levine, Unidirectional Wave Motions, (North Holland, Amsterdam, 1978 ).Google Scholar
  5. 5.
    E.R. Generazio, Mat. Eval. 43, 995 (1985).Google Scholar

Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Anthony Sinclair
    • 1
  • Michael O’Brien
    • 1
  • Victor DaSilva
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of TorontoTorontoCanada

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