Abstract
The authors have previously proposed an effective method for analyzing the electric current density of carbon fiber-reinforced polymer (CFRP) composites using an anisotropic electric potential function. The method is based on the assumption that CFRP laminates are homogeneous orthotropic materials. Actual CFRP laminates are, however, heterogeneous materials, having resin-rich layers and carbon fiber layers. In the present study, the electric conductance is calculated on the assumption that CFRP laminates are homogeneous using electrical resistance data measured by a four-probe method, and used for electric current analysis. A new specimen design is proposed to allow the electric current distribution of CFRP laminates to be investigated experimentally. The results obtained confirm that our analysis method is accurate for determining the electric current density of actual CFRP laminates. Thus, the assumption that CFRP laminates may be considered homogeneous orthotropic materials for electric current analysis is experimentally verified.
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