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Failure of Bolts in a Radar Antenna System Reflector Joint

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


Failure of high tensile steel bolts used in a Radar antenna system reflector joint was analysed. They had cracked at the fillet head inside an alien key socket due to improper seating. Cracking was aggravated by the presence of hydrogen. in the material introduced during cadmium plating.

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