Metal-matrix composites (MMCs) appear to be well suited for structural applications where high specific strength (strength-to-density ratio), high specific modulus (modulus-to- density ratio) and high-temperature material properties provide significant engineering and economic advantages. So far, relatively little work was conducted on nondestructive characterization of MMCs [1–5]. The main goal of this paper was to investigate the use of the nondestructive eddy current technique for the evaluation of the electrical conductivity behavior of silicon-carbide-particulate (SiCp) reinforced aluminum (Al) MMCs, and to develop theoretical models to predict the results.