Analysis of screws removed from an aeroengine

Suresh Kumar, M and Madan, M and Venkataswamy, MA and Sujata, M and Parameswara, MA and Bhaumik, SK (2005) Analysis of screws removed from an aeroengine. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

Four IPNGV screws from an aeroengine, which had completed 9800 hrs of flight, were sent to the laboratory for analysis. All the screws were found severely corroded/oxidized. The corrosion/oxidation products were found to contain substantial amounts of O, S among the other elements. A few tight cracks were also observed at the thread root regions. Since these cracks were very shallow, they could not be opened for further study. However, formation of theses cracks due to stress corrosion cracking cannot be ruled out.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aeroengine;IPNGV screws;corrosion;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, Materials Science Division
Depositing User: Mrs Manoranjitha M D
Date Deposited: 16 Nov 2011 14:52
Last Modified: 16 Nov 2011 14:52
URI: http://nal-ir.nal.res.in/id/eprint/10063

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