Failure analysis of outer flap of TVC heat shield

Madan, M and Sujata, M and Venkataswamy, MA and Raghavendra, K and Bhaumik, SK (2011) Failure analysis of outer flap of TVC heat shield. Project Report. National Aerospace Laboratories, Bangalore, India.

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Abstract

A failed outer flap of TVC heat shield of an aeroengine of an aircraft was sent to the laboratory for investigation. Examination revealed that a part of the heat shield on the outer flap had fractured and got dislodged. Fratographic study showed that the sheet material had failed by fatigue. The fatigue was of reverse bending type. Analysis shows that the fatigue failure of the heat shield was due to excessive flutter in the unsupported part of the corrugated sheet material. A detailed analysis of the failure is presented in this report.

Item Type: Proj.Doc/Technical Report (Project Report)
Uncontrolled Keywords: Aeroengine;TVC heat shield;Fatigue
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: 14 Jul 2011 16:14
Last Modified: 14 Jul 2011 16:14
URI: http://nal-ir.nal.res.in/id/eprint/9388

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