Failure analysis of first stage compressor blades of an aeroengine

Madan, M and Bhuvana, R and Sujata, M and Venkataswamy, MA and Bhaumik, SK (2008) Failure analysis of first stage compressor blades of an aeroengine. Project Report. National Aerospace Laboratories, Bangalore, India.

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Two cracked blades belonging to first stage compressor of an aeroengine were forwarded to the laboratory for investigation. Both the blades were found to have failed by fatigue. Examination revealed that erosion of the coating at the leading edge had exposed the blade material to atmosphere. Subsequently, the atmospheric corrosion resulted in the formation of pits which acted as stress concentrators for fatigue crack initiation. The material of construction was found to conform to specification and there was no metallurgical degradation in the blade material on usage. A detailed analysis of the failures is presented in this report.

Item Type: Monograph (Project Report)
Uncontrolled Keywords: Aeroengine;Compressor blade;Corrosion;Fatigue
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Ms. Alphones Mary
Date Deposited: 20 Jul 2011 04:40
Last Modified: 20 Jul 2011 04:40

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