Characterization of Electrical Conductivity of Anisotropic CFRP Materials by Means of Induction Thermography Technique
2018
Numerical simulations by means of finite elements are used to investigate the capacities of the induction thermography technique for the characterization of electrical conductivities of unidirectional carbon fiber reinforced polymer (CFRP) materials. A coupled electromagnetic-thermal model is presented using hexahedral elements to deal with the thin region of fully anisotropic physical properties. Eddy-current problem is solved using the $ {{T}}$ - $\Omega $ formulation to deduce heat source density power. Transient thermal problem is solved with a fixed time step. An error minimization-based method is presented to identify the electrical resistivity of unidirectional CFRP from the induction thermography measurement.
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