Induction Cure Modeling and Applications for Composite Structures
A rapid temperature increase due to joule heating can be achieved when carbon composites are exposed to an electromagnetic field. This heating process due to electromagnetic induction can be used for composite curing and manufacture. The electromagnetic induction heating and heat transfer in the composite are anisotropic and concentrated upon the carbon fiber orientation and distribution. In addition, the strength and frequency of transient electromagnetic fields have great influence on the final quality of the composite. The process of induction cure is developed based on an empirical or trial-and-error approach. A computational model has been developed by solving Maxwell’s equations, thermal conduction, and cure kinetics models. The analysis accounts for the three dimensional transient electromagnetic field and electrical conductivity of the composite material. This paper will illustrate the derived formulation and numerical (finite element) results based on the analysis. Numerical simulations of a cylinder and a flat laminate are conducted to illustrate the computational capability. The induction heating for composite manufacture is also discussed for current Army’s applications.
Authors: Jerome T. Tzeng, and Kou-Ta Hsieh
Conference: SAMPE Seattle 2017