Numerical simulation of inductive

Thermoplastic composites can be re-melted, making them suitable for welding, which offers a compelling alternative to traditional methods used for joining thermoset composite parts. This study investigates the inductive heating processes in unidirectional (UD) carbon fiber reinforced polymer (CFRP) laminates by developing a numerical electromagnetic and thermal simulation model. The model captures the key phenomena of eddy current generation and associated heat production, particularly at the interfaces of UD plies. A measurement technique was devised to assess the electrical properties of the ply material, and a field measurement method was created to analyze the magnetic field around the induction coil and work piece. Inductive heating experiments were performed on various thick composite laminate plates featuring different ply arrangements to compare and validate the simulation model results. The surface temperatures measured during these experiments were compared against the simulation outputs. The findings from this research provide insights into the design of UD-ply laminates for enhanced weldability through inductive heating, and they can also guide the optimization of induction welding equipment and settings.