SUBSTANTIATION OF DEVICE DESIGN PARAMETERS FOR MAGNETIC-POWDER DEFECTOSCOPY OF VEHICLE NUMBER PLATES

Abstract

The purpose of the article is to substantiate the design parameters and performance of the device for expert research to identify hidden defects in the structure of the surface layer of metal and establish the presence of interruption of license plates, welding of individual areas or the absence of such damage to vehicle surfaces. Methodology. The reliability of the obtained results and conclusions is ensured by the application of a number of methods of scientific knowledge. In particular, the object, subject, goal and objectives of the research are established in the context of the achievements of technical sciences and the needs of legal practice using the dialectical-materialistic method, when problems arise in determining the node numbers of vehicles; system-structural objects of research are classified; the structural-functional method is used to study the distribution mechanism of magnetic lines of force in the presence of surface and buried defect; the experimental method proved the effectiveness of the proposed device. Scientific novelty. A device for magnetic-powder defectoscopy of vehicle node numbers was developed and put into practice. A quantitative criterion for evaluating its effectiveness is obtained. Conclusions. A new design has been created and the parameters of the device for magnetic-powder defectoscopy of license plates of vehicle components, not complicated and technologically advanced in manufacture, efficiency in detection of the redressing of license plates or the entering of other numbers into the contents of the initial identification number of the body or the absence of such damage on the surface of the nodes of vehicles. as well as in comparison with inexpensive analogues, have been substantiated. The results of expert studies to identify hidden defects in the structure of the surface layer of the metal with the proposed device proved its