Abstract
A new electrical potential method is proposed in the present study. Many electrodes to measure electric voltage are mounted on a carbon-fiber-reinforced-polymer beam surface. Direct current is applied and the electric voltage changes are measured at the electrodes. Comparing the measured results with the analytical results obtained from the anisotropic electric potential function, electric conductance ratio is obtained. Using the obtained electric conductance ratio, difference of the electric voltages at the surface is amplified. The difference of the electric potential enables us to know the delamination location and dimension. Uniform doublet analysis enables us to know the relationship between the measured results and the delamination location and dimension. The method is applied to numerical analyses here. The results show that the new method is quite effective for simple delamination monitoring.
