Towards high-quality multi-spot-welded joints in thermoplastic composite structures

Towards high-quality multi-spot-welded joints in thermoplastic composite structures

Zhao, T. (TU Delft Structural Integrity & Composites)
Palardy, G. (TU Delft Structural Integrity & Composites)
Villegas, I.F. (TU Delft Structural Integrity & Composites)
Benedictus, R. (TU Delft Aerospace Structures & Materials)

Aerospace Structures & Materials

2017-01-01

Ultrasonic welding is a promising assembly technique for thermoplastic composites and it is well-suited for spot welding. In this study, two typical welding process control strategies, i.e. displacement-controlled and energy-controlled welding, were selected to manufacture spot-welded joints. The influence of different boundary conditions, provided by different welding jigs, on the welding process and the performance of thus-created welded joints were investigated. The optimum input energy was found dependent on the welding jigs, while the optimum displacement was consistent for achieving the maximum weld strength in both welding jigs. Therefore, displacement-controlled welding showed more potential in producing consistent welds in sequential multi-spot welding.

Fracture analysis
Mechanical behaviour
Thermoplastic composites
Ultrasonic spot welding
Welding process control

http://resolver.tudelft.nl/uuid:0262d624-296d-4128-90e3-7db4365aa234

International Committee on Composite Materials

21st International Conference on Composite Materials, ICCM 2017, 2017-August

21st International Conference on Composite Materials, ICCM 2017, 2017-08-20 → 2017-08-25, Xi'an, China

Institutional Repository

conference paper

© 2017 T. Zhao, G. Palardy, I.F. Villegas, R. Benedictus