Analysis of failed compressor stator blades of an aeroengine

Madan, M and Suresh Kumar, M and Venkataswamy, MA and Sujata, M and Parameswara, MA and Bhaumik, SK (2005) Analysis of failed compressor stator blades of an aeroengine. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

All the compressor stator blades of aeroengine referred to the laboratory were found to have failed by fatigue. The fatigue cracks had initiated at the fillet and/or under cut on the hub of the blades. The most probable reason for fatigue crack initiation appears to be the presence of stress concentrators such as rough machining marks, sharp change in fillet and sharp edges. The fatigue is stress related and no metallurgical abnormalities were responsible for the failure. The cause of the present failure was found to be identical to those stator blades failure of Kaveri engine investigated in this laboratory in the past (Refer NAL Report Nos 718, 854 and 878).

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aeroengine, compressor stator blades, fatigue, stress concentrators
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: Mrs Manoranjitha M D
Date Deposited: 18 Jul 2011 13:26
Last Modified: 18 Jul 2011 13:26
URI: http://nal-ir.nal.res.in/id/eprint/9431

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