Modeling Induction Heat Distribution in Carbon Fiber Reinforced Thermoplastics

Being contactless and volumetric, Induction heating has proven to be an effective method for producing high strength weld joints between Carbon Fiber Reinforced Thermoplastic (CFRT) components. There are inherent challenges with the implementation of this technology due to the anisotropic and multi-constituent nature of CFRT. Methods for determining anisotropic electrical and thermal properties of CFRT plate are described. The properties are imported to a FEA program for electromagnetic and thermal simulation. The program is used to determine proper frequency and induction coil design with a goal to achieve uniform temperature distribution in a lap joint between two CFRT plates. The effect of different material types on temperature distribution will also be considered.