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Non-destructive testing is extensively used on aero engine components to ascertain their quality, integrity and reliability. Testing methods have been continuously improved to yield quantitative data and are being effectively used not only for conventional defect detection but also for material characterisation, component life estimation studies, etc. Turbine rotor blades are life critical components in aero engines and pose a technical challenge for inspection owing to their complex design, manufacturing process and operating conditions. Interpretation, evaluation and quantification of the indications are difficult and are generally accomplished by complementary NDT methods. This paper gives an overview of the various NDT methods applied on a military aero engine turbine rotor blade, along with the results obtained, and also explores the possibilities of the application of emerging inspection technologies.

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