Thermoplastic Composite Fusion Welding (CoFusion)
D. Conway, S. Cooper
AGC AeroComposites, Yeovil, United Kingdom
This paper describes the development of a form of resistance welding for thermoplastic composite materials and assemblies (Patent Applied For). The welding element consists of a polymer-impregnated light weight discontinuous carbon fibre mat that is sandwiched between two layers of electrically isolating glass fabric which allows the technique to be used for welding carbon fibre based laminates. The welding process involves positioning the element between the surfaces that are to be welded, pressure is applied and an electrical current passed through. The welding element heats up rapidly and melts the thermoplastic both in the element and of the laminate either side of the element. This process can be completed within 3 minutes. The assembly is allowed to cool and the weld is formed. Welded test coupons and components have been evaluated and shown to have consistent high strength and fatigue properties.
ITHEC 2016 Manuscript P11
Publication date: 01/10/2016
Manuscript P11 published in Conference Proceedings ITHEC 2016
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