A lot of progress is made in the last decade concerning the theoretical and practical aspects of Non-Destructive Testing. The electrical conductivity of aluminum products can be measured after thermal processing to verify that the correct metallurgical structure is present. Thermal processing of aluminum affects the metallurgical structure of the material, which in turn affects the electrical conductivity. The use of a particular Non-Destructive Inspection (NDI) method is highly dependent on the type of structure being inspected, structural material, desired accuracy, the size of the flaw to...