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Ultrasonic welding uses high frequency to heat up the required metals. In which of the following cases, ultrasonic welding is not used?
1. Fabricating nuclear fuel elements
2. Thermetic sealing of materials and devices
3. Welding galvanized sheets
4. Splicing metallic foil

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Correct Answer - Option 1 : Fabricating nuclear fuel elements

Ultrasonic Welding:

  • It is an industrial process whereby high-frequency ultrasonic acoustic vibrations are locally applied to workpieces being held together under pressure to create a solid-state weld.
  • Ultrasonic welding is used for applications involving both similar and dissimilar joints as well as the welding of polymers.
  • The process is used to produce lap joints in metals, plastic sheets, and plastic films in varied shapes as wires (crossed or parallel), ribbons, and flat surfaces.
  • For joining other types of assemblies that can be supported on an anvil, set-ups are designed for the material and the part shape required.
  • Ultrasonic welding is used in many industries including electrical and computer, automotive and aerospace, medical, and packaging.
  • Welding galvanized sheets, Splicing metallic foil, thermetic sealing of materials and devices are examples of ultrasonic welding.

  • End plug welding is the most critical process in the manufacturing of nuclear fuel.

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