Studying the dependence of flaw-induced magnetic field on the parameters of magnetizing device

The topography of magnetic fields has been studied for different magnetizing conditions. Recommendations are given for the placement of electromagnet poles with respect to the test object. The relationship between magnetic-field strength and the gap between electromagnet poles and the test object is estimated. The distribution of magnetic-field strength above a flaw is given; the possibility of its use in matrix transducers is shown.