Analysis of failed main wheel hub of an aircraft

Venkataswamy, MA and Sujata, M and Keshab, Barai and Parameswara, MA and Bhaumik, SK (2003) Analysis of failed main wheel hub of an aircraft. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

A prematurely fractured main wheel hub of an aircraft was sent to the laboratory for investigation. Analysis showed that the main wheel hub has failed by fatigue. Multiple fatigue cracks were found to have initiated at the fillet of the outer face rim flange and propagated simultaneously before giving rise to final overload failure. Microstructural study indicated that stress corrosion cracking at a mechanically damaged site on the fillet region was responsible for fatigue crack initiation. Microstructure of the wheel hub material was found to be satisfactory. The material was found to conform to L-42 Al-alloy specification. No metallurgical abnormalities were found responsible for the stress corrosion cracking.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Main wheel hub;aircraft;fatigue;stress corrosion cracking
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
Depositing User: Mrs Manoranjitha M D
Date Deposited: 01 Aug 2011 13:38
Last Modified: 01 Aug 2011 13:38
URI: http://nal-ir.nal.res.in/id/eprint/9769

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