Electromagnetic Non-Destructive Evaluation Of Reinforced Concrete Rebars

This paper concerns quantitative imaging, consisting in finding location, direction and size, of concrete rebars by means of eddy current measurements and an innovative inversion method. Owing to an accurate numerical modelling of the probe-rebar interaction, an analysis of issues to be considered for the quantitative imaging of rebars is conducted, which leads to significant simplifications in the numerical model and enables developing an accurate and computationally efficient imaging method. Results of experimental testing demonstrate favourable validity of the proposed numerical model.