EXPERIMENTAL METHOD FOR ASSESSING THE QUALITY OF POLYMER PARTS AND THE EFFECT OF CAVITATION ON THE QUALITY OF OPERATION OF HYDRAULIC SYSTEMS OF A CAR

Abstract

Defects observed in the technological processes of the production of polymer parts are quite common. These are cracks, delamination, pores. Among these defects, the most dangerous are defects with a low degree of polymer cure. They affect the physical and mechanical characteristics of the polymer, reduce thermal conductivity, material resistance to aggressive media, the presence of defects of this kind leads to a change in the nature of the destruction of the material under static and dynamic fatigue loading.

A new method for assessing the quality of polymeric materials and determining the presence of defects using infrared thermography was proposed at the PRADM department of the FDTM faculty. The students got acquainted with the non-contact method of non-destructive testing of polymer samples placed in a magnetic field using a thermal imager. The work of a thermal imager is based on obtaining a thermal image in the infrared region of the spectrum.

Another topical topic of scientific research of the students of the department is the consideration of the phenomena of cavitation in hydraulic systems during the operation of hydraulic systems of a car. Cavitation leads to a drop in the dynamic characteristics of the hydraulic drive, reducing the performance and accuracy of the vehicle's hydraulic system. The autors studied the factors affecting the intensity of cavitation, the dynamics of the appearance of cavitation zones, methods of combating cavitation.