Magnetosensitive transducers for nondestructive testing operating on the basis of the giant magnetoimpedance effect: A review

Experimental data on and model representations of the physical processes in small detectors operating on the basis of the magnetoimpedance effect are analyzed and generalized for conditions adapted to systems of magnetic nondestructive testing. The principles of measuring the high-frequency magnetoimpedance effect in electronic circuits including a sensitive element of a detector of weak magnetic fields are briefly described. The data on the available devices for nondestructive testing (NDT) based on the magnetoimpedance effect are systematized and examples of typical approaches are presented.