Abu Antoun, Ch.Würsch, Ch.Koechli, Ch.Perriard, Y.2017-02-282017-02-282017-02-28201710.1109/LMAG.2017.2674619https://infoscience.epfl.ch/handle/20.500.14299/134870WOS:000399252300001Inductive detection with double-balanced coils and a spatial phase profile were used to identify copper and steel rods in a composite target. The electromagnetic detection system was designed and validated using a dipole model. Simulations and experiments identified whether a target was copper, steel, or a combination. The system, optimized for excitation at high audio frequencies, was able to estimate the sizes, depths, and locations of the target materials.Electromagnetic devicesDetectionEddy currentsMagnetic sensorsNondestructive evaluationNumerical methodsGeometrically Balanced Metal Detector Based on Optimized Frequencies and Spatial Phase Profile Responses to Discriminate Different Metal Rods Featurestext::journal::journal article::research article