Journal
COMPOSITES PART B-ENGINEERING
Volume 203, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2020.108466
Keywords
Fusion bonding; Polymer mesh; Continuous welded seam; High frequency welding; Joining
Funding
- European research programme Clean Sky
- European Union's Horizon 2020 Clean Sky 2 Joint Undertaking under the AIR-FRAME ITD grant [807083]
- H2020 Societal Challenges Programme [807083] Funding Source: H2020 Societal Challenges Programme
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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.
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