Failure analysis of centre support bevel gear of an aeroengine

Suresh Kumar, M and Madan, M and Venkataswamy, MA and Sujata, M and Parameswara, MA and Bhaumik, SK (2005) Failure analysis of centre support bevel gear of an aeroengine. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

The centre support bevel gear of an aeroengine has failed by fatigue. The fatigue crack had initiated at the tooth root radius region, propagated progressively over about 70% cross section before culminating in an overload failure. Analysis shows that the ineffectiveness of the tab washers resulted in loosening of the bolts. This in turn resulted in misalignment of the gears and fatigue crack initiation in the bevel gear. No metallurgical and/or mechanical abnormalities were responsible for the fatigue crack initiation. The other damages observed are secondary in nature and subsequent to the primary failure in the bevel gear.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aeroengine;bevel gear;fatigue
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: 05 Dec 2011 16:48
Last Modified: 05 Dec 2011 16:48
URI: http://nal-ir.nal.res.in/id/eprint/10127

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