On differences and similarities between static and continuous ultrasonic welding of thermoplastic composites

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Abstract

Continuous ultrasonic welding is a promising high-speed and energy-efficient joining method for thermoplastic composite structures. Our aim was to identify and understand differences between the static and continuous ultrasonic welding process for thermoplastic composites. In particular, melting of the interface, consumed power and energy density, temperature evolution at the weld interface, and optimum welding conditions for both types of processes were investigated. This was done for three combinations of welding force and vibrational amplitude, parameters which are known to have a significant effect in both welding processes. Our results showed that for the continuous process the amount of non-welded area under the sonotrode remains constant, while for the static process the amount of non-welded area gradually decreases to zero. Additionally, the optimum vibration times and welding speeds in both processes are similar.
Original languageEnglish
Article number108466
Number of pages14
JournalComposites Part B: Engineering
Volume203
DOIs
Publication statusPublished - 15 Dec 2020

Keywords

  • fusion bonding
  • Polymer mesh
  • Continuous welded seam
  • High frequency welding
  • Joining
  • Fusion bonding

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