Abstract
In this paper, time history of temperature on concrete surface is observed by reinforcement bar heating based on the electromagnetic induction method, and we formulated reinforcement corrosion shape estimation problem so as to minimize difference between theoretical computed value and observed data. Design variable is coordinates on corrosion surface, and the adjoint variable method is applied to compute the gradient of performance function with respect to the coordinates. In this study, we could obtain the shape of reinforcement corrosion based on modification of thermal property and assumption that reinforcement corrosion shape is cylindrical shape.
