Improving theReconstruction Accuracy ofGAs-Based NDE/NDTMethods through aLevelSetApproach

i Abstract - In theframework ofnondestructive testing and evaluation (NDEINDT), this paperdeals withtheproblem ofthe detection ofunknownanomalies indielectric materials. The proposed inverse scattering approach consists ofa two-step procedure aimedatfirstly estimating theregion-of-interest where thedefect issupposed tobelocated andthenimproving the qualitative imaging (i.e., theshapeandposition) ofthecrack. In ordertoassess theeffectiveness oftheproposed approach, an illustrative result fromrepresentative numerical testcasesis presented anddiscussed.