Condition Assessment of Strain-Gauged Aero Engine Compressor Stator Vanes Using Eddy Current Testing
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During development testing of prototype aero gas turbine engines in a test bed, various types of defects are expected to be detected related to the design drawbacks, material properties, manufacturing process and engine running conditions. The probability of occurrence of such cases is seen in an increasing trend when tests are performed on -initio development engine toward airworthiness qualification goals, wherein the use of nondestructive testing is warranted extensively. This paper discusses the methodology adopted to assess and decipher the condition of strain-gauged first-stage compressor stator vanes using eddy current testing. It is concluded that this method is very valuable for the investigation of components under practical scenarios arising out of development tests of aero gas turbine engines.
KeywordsNondestructive testing Strain-gauge Compressor vane Penetrant testing Eddy current testing
The authors take this opportunity to express gratitude to Director, GTRE, for his continuous encouragement to carry out this work and also according permission to publish the findings. The authors also acknowledge Quality Assurance, Compressor, Vibration and Instrumentation Groups for their extensive technical support.
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