Simultaneous Estimation of Void Depth and Plane Size by Electromagnetic Multilayer Scanning Method for Nondestructive Inspection of Outer Wall Tiles

Abstract

This study aims to simultaneously estimate the depth and size of voids in outer wall tiles. The reflection intensities of the healthy and void-containing tile surfaces are mathematically modeled, and the parameters related to the void depth and size are identified in the model to estimate them simultaneously in a single scan. Experimental results show the effectiveness of the proposed method.