Failure analysis of exhaust pipe of a MICROLITE aircraft

Sujata, M and Bhaumik, SK (2004) Failure analysis of exhaust pipe of a MICROLITE aircraft. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

The exhaust pipe of the MICROLITE aircraft has failed by fatigue. Fatigue crack has initiated at the smaller tube – weld interface on the outer surface of the exhaust tube and propagated progressively along the circumference to about 45 mm length before culminating in overload fracture. No weld and/or metallurgical abnormalities were found responsible for fatigue crack initiation. Fatigue is of high cycle – low stress type and is stress related. The most probable reason for fatigue crack initiation appears to be assembly stresses.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Exhaust pipe;MICROLITE aircraft;fatigue;assembly stresses
Subjects: AERONAUTICS > Aeronautics (General)
CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division
Depositing User: Mrs Manoranjitha M D
Date Deposited: 29 Jul 2011 12:13
Last Modified: 29 Jul 2011 12:13
URI: http://nal-ir.nal.res.in/id/eprint/9731

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