Failure Analysis of Compressor Blades of Aero-Engine

The compressor is an integral and an important part of an aero-engine. The blades of compressor fail because of several reasons. Failed blades of various aero-engines are subjected to investigations in this work. Results of these investigations are presented in detail. Compressor blade denoted as CB-1 failed because of formation of alpha casing and impact on the casing. Another compressor blade termed as CB-2 was damaged because of impact by foreign object. Sticking of the blade to the casing resulting in tearing of the blade is responsible for failing of third compressor blade referred as CB-3. Thermo-mechanical fatigue caused cracking on a different compressor blade designated as CB-4. Impact by foreign object containing Ca, Al, Zn and O is the reason for the damage of the leading and trailing edges of fifth compressor blade assigned as CB-5.