Analysis of cracked second stage compressor rotor drum of engines of a particular type of aircraft

Venkataswamy, MA and Parameswara, MA and Sujata, M and Keshab, Barai and Bhaskaran, TA and Bhaumik, SK (2004) Analysis of cracked second stage compressor rotor drum of engines of a particular type of aircraft. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

The second stage compressor rotor drum in question has failed by fatigue. Fatigue cracks were found to have initiated at the rivet holes. No metallurgical abnormalities were found responsible for the fatigue crack initiation and fatigue appeared to be stress related. The most probable reason for fatigue crack initiation appears to be improper rivet contact with the rivet hole on the drum. This has resulted in excessive deformation in localized regions leading to stress concentrations and fatigue cracks initiation. A detailed analysis of the failure is presented in this report.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Second stage compressor rotor drum;aeroengine;fatigue failure;improper riveting
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: 01 Aug 2011 13:38
Last Modified: 01 Aug 2011 13:38
URI: http://nal-ir.nal.res.in/id/eprint/9762

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