Advanced geometric formulations for the design of a long defects detection system

Abstract The aim of the paper is to highlight some of the innovative methodologies, techniques and systems for nondestructive electromagnetic testing, which have been developed in the framework of the applications of methods of a diagnostics electromagnetic project partially funded by the Italian Ministry of University and Research. In particular, we will present the feasibility design of a suitable exciting-receiving coils configuration able to detect long defects by means of eddy-currents. To solve the forward eddy-currents problem, advanced analysis tools have been developed and validated. Keywords: nondestructive testingeddy-currentsdiscrete approaches Notes 1. These formulations are part of the GAME (geometric approach for Maxwell equations) code developed by R. Specogna and F. Trevisan with the partial support of MIUR (Italian Ministry for University and Research). 2. The minus sign comes from the assumption that inner/outer orientations of a node are opposite. 3. A precise definition of the notion of consistency for constitutive matrices is given in [Citation3]. 4. This is a vector normal to the face oriented as the outer orientation of the face and with amplitude equal to the area of the face.