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Failure of the Stabiliser Spar Tube of a Chetak Helicopter

Authors
Publisher
National Aerospace Laboratories
Publication Date
Keywords
  • Chemistry And Materials (General)

Abstract

Failure of the stabiliser spar tube of a Chetak helicopter was analysed. The failure had occurred at a welded junction. Incomplete fusion during welding has been responsible for the initiation and propagation of a fatigue crack. The final fracture was by overload.

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