The Effect of a High-Frequency Electromagnetic Field on Dynamic Mechanical and Tribotechnical Characteristics of Frictional Composites with a Thermosetting Polymer Matrix
Abstract
The paper presents the results of experimental studies of the influence of treatment by an amplitude modulated high-frequency electromagnetic field on the dynamic mechanical and triboacoustic characteristics of friction composites with a polymer matrix intended for operation in unsteady friction units of brake devices of machines. It was found that in the dynamic mechanical characteristics, the effect of magnetic field treatment manifests itself most significantly in the change in the tangent of the angle of mechanical losses (a decrease in the maximum values of the tangent of mechanical losses to 52%), as well as in the change in the dynamic instability of friction and the spectral characteristics of frictional noise components in the range above 2 kHz.