Research of Influence of Temperature and Mechanical Stresses on Magnetoelastic Characteristics of Structural Steel Cores

The research results of the effect of temperature and tensile stresses on the magnetic properties of structural steel 13CrMo4-5 were presented in the paper. Before the measurements, the cores of the test material were subjected to the step-cooling test, simulating the influence of the time flow and environmental conditions on the material. For the tests, three cores, each differing by the step-cooling test process duration were used. The paper also describes the step-cooling test process. Management of computer measurement system, designed specifically for research was described. Measurements results, which indicate that the temperature has little effect on the magnetic properties of the material under investigation were presented. However, a significant effect of tensile stress on the magnetic characteristics of the material, which indicates the possibility of using magnetoelastic phenomenon when studying non-destructive testing of structural steels was revealed