Evaluation of the radius of rebars inside a reinforced concrete sample by using 2D inverse problem on radar measurements

The paper describes an optimization process to evaluate the radius of rebars located inside reinforced concrete sample, by solving a 2D inverse problem. This process has been applied to measurements and gives acceptable value of radius. However, there exist differences between measured and computed fields by using the optimized radius. A 3D model of the device has been proposed to improve this drawback.