Failure Analysis of Air Turbine Starter (ATS) Bolt

Venkataswamy, MA and Sujata, M and Parameswara, MA and Bhaumik, SK (2004) Failure Analysis of Air Turbine Starter (ATS) Bolt. Project Report. National Aerospace Laboratories, Bangalore.

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Abstract

The bolt of the ATS deliverable II had failed in a brittle mode. Composition, microstructure, hardness were found to conform to the specification and no metallurgical abnormalities were found responsible for the failure. Analysis suggests that most probably, the bolt had fractured under high strain rate. The discussion with the manufacturer (Turbotech) of the ATS revealed that there do exist a few possibilities under which the bolt may experience sudden load. A design modification was proposed by Turbotech to avoid recurrence of similar failure.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: ATS bolt;maraging steel;brittle failure
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
Depositing User: Mrs Manoranjitha M D
Date Deposited: 29 Jul 2011 12:12
Last Modified: 29 Jul 2011 12:12
URI: http://nal-ir.nal.res.in/id/eprint/9736

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