Failure analysis of port main wheel “drive side half hub” of an aircraft

Madan, M and Bhuvana, R and Sujata, M and Venkataswamy, MA and Bhaumik, SK (2008) Failure analysis of port main wheel “drive side half hub” of an aircraft. Project Report. National Aerospace Laboratories, Bangalore, India.

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Abstract

Evidences suggest that the indentation marks on the rollers and the cracks on the bearing cup were resulted during the impact of the aircraft on the port main wheel. These were caused instantaneously and not over a period of time. On the other hand, the damages seen on the roller elements of the bearing were progressive in nature and were caused over a period of time. The rollers of the bearing had failed by flaking, a form of fatigue failure. Analysis shows that the most probable reason for the premature flaking in the bearing could be excessive axial load. The failure pattern and the aircraft behaviour during take-off roll strongly support this conclusion. However, the possibility of excessive axial load on the port main wheel needs to be examined.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aircraft;Wheel hub;Bearing;Flaking;Axial load;Impact
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: Ms. Alphones Mary
Date Deposited: 19 Jul 2011 10:26
Last Modified: 19 Jul 2011 10:26
URI: http://nal-ir.nal.res.in/id/eprint/9439

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