Electromagnetic (Eddy current) nondestructive testing of nonferrous metal tubes and rods

Abstract

In this thesis, nondestructive testing of nonferrous metal tuhings and rods has been-investigated by employing eddy currents. Especially the detection of cracks within the metal bodies and on the surfaces, electromagnetic induction, signal processing, and other problems of testing procedure have been examined. A multifrequency test device has been realised by using discrete components and operational amplifiers to examine aluminium tubes and rods.