Analysis of damaged bearings of an aeroengine

Parameswara, MA and Venkataswamy, MA and Sujata, M and Keshab, Barai and Bhaumik, SK (2003) Analysis of damaged bearings of an aeroengine. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

The shell bearing of No.3 journal had failed by flaking. The flaking took place at the steel-aluminium alloy interface. From the evidences, it appears most probable that due to axial load on the crankshaft, the bearings have moved in the forward direction. This had resulted in wearing out of the tenons on the shell bearings. The tenons on the shell bearing of No.3 journal were completely worn out and hence the bearing was free to rotate along with the crankshaft. During this rotation, the bearing had experienced excessive load leading to flaking off of the bearing material by fatigue. No metallurgical abnormalities were found responsible for the failure.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aerongine;bearing;flaking;axial movement
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: 29 Jul 2011 12:14
Last Modified: 29 Jul 2011 12:14
URI: http://nal-ir.nal.res.in/id/eprint/9737

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