Continuous Ultrasonic Welding of Thermoplastic Composites: An experimental study towards understanding factors influencing weld quality

B.C.P. Jongbloed*

*Corresponding author for this work

Research output: ThesisDissertation (TU Delft)

146 Downloads (Pure)

Abstract

One of the most promising welding techniques for thermoplastic composites is ultrasonic welding. It is mainly known as a spot welding technique. The relatively new technology continuous ultrasonic welding of thermoplastic composites makes it possible to obtain large fully welded seams with higher load carrying capabilities. However, at the start of the research conducted for this dissertation very little knowledge on the process was available. The weld quality in the state-of-the-art research was significantly lower than the weld quality of the statically welded counterpart in terms weld uniformity as unwelded and overwelded areas were present simultaneously, the single-lap strength, and the presence of voids. Hence, before continuous ultrasonic welding can be industrially applied the weld quality needs to be improved. Consequently, the main objective of this dissertation was to acquire a deeper understanding of the continuous ultrasonic welding process of thermoplastic composites to promote its development for future industrial applications.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Delft University of Technology
Supervisors/Advisors
  • Fernandez Villegas, I., Supervisor
  • Benedictus, R., Supervisor
  • Teuwen, J.J.E., Advisor
Award date11 Jan 2022
Print ISBNs978-94-6421-596-0
DOIs
Publication statusPublished - 2022

Keywords

  • ultrasonic welding
  • fusion bonding
  • thermoplastic composites
  • energy director
  • CF/PPS

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