An Investigation Of Turbine Blade Failure In Aircraft Turbine Engines

Khairul Anuar, Ahmad (2009) An Investigation Of Turbine Blade Failure In Aircraft Turbine Engines. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

In modern aviation, the aircraft turbine engines are considered to be highly reliable in that failures in services are rare. However, research and improvement to the aircraft component seems to be the endless process to avoid the failure during operation of an aircraft engines. This is due to the safety of passengers. Aircraft turbine blades would damage after several years of operation. This blade is identified the most likely component to be failed due to the operating conditions at elevated temperature. The blades profile and behavior need to be understood to overcome these problems. So, this project deals with some mechanical analysis by simulation to find the possible reason of the failure. With the helps of MSC Nastran/Patran software package, a few simulations of finite element analysis will be done with the best simulation will be choose for further analysis. The results of maximum stress by simulation then will be compared to the theoretical values that determined by manual calculation. From the analysis, the maximum stress obtain is 647 MPa while the maximum deformation is 1.13 mm. There are two possible causes of the failure of the aircraft turbine blade which are creep rupture and thermomechanical fatigue.

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