Vi. Maksimochkin et al., SOME POSSIBILITIES OF THE ELECTROMAGNETIC METHOD OF NONDESTRUCTIVE TESTING OF THE STRUCTURE OF PATENTED STEEL WIRE, Russian journal of nondestructive testing, 30(5), 1994, pp. 373-379
We investigated the possibility of using the harmonic components of th
e induction emf and of the Barkhausen discontinuities for the nondestr
uctive testing of the microstructure of patented steel wire with 0.5 t
o 0.9% carbon content of the steel. The article describes an automated
computerized installation and a method of evaluating the microstructu
re according to Sour parameters with three frequencies for exciting th
e specimen by an alternating magnetic field.