FEATURES OF ACOUSTIC-ELECTRICAL METHODS FOR MONITORING THE DESTRUCTION OF SOLID DIELECTRICS

10.25712/ASTU.1811-1416.2023.03.008

Abstract

The article presents the results of studies of the characteristics and parameters of mechanical and acoustic-electrical transformations. The regular relationships between the characteristics of electromagnetic emission and the parameters of electromagnetic signals during the formation of cracks and the presence of layered structure of solid-state dielectric materials under deterministic pulsed acoustic action are studied. Experimental results of the influence of the charge state of layered structures on the parameters of electromagnetic signals are presented. Using the example of the complex structure of nonmetallic rock samples, the patterns of changes in the characteristics of electromagnetic emission are given. Using these patterns, it is shown that it is possible to determine the stages of the development of destruction under continuous uniaxial compression loading before the destruction of the sample, including the stage of formation and development of the destructive zone. The regularities of changes in the parameters of acoustic-electrical transformations under external deterministic pulse effects on the studied natural and model dielectric structures under step loading by uniaxial compression are studied. The features of each of the methods used in relation to the control of the processes of destruction development are analyzed.