SEARCH CRITERIA CONTROL THE STRESS-STRAIN STATE OF THE DIELECTRIC STRUCTURES
It was researched the electromagnetic emission, stimulated acoustic pulses observed in samples of epoxy resin filled with sand under uniaxial compression stepped up to the failure. During the experiments we measured responses time realizations from sources of mechanoelectric transformations in the sample for each fixed value of the load, using the information collection card. We used linear and nonlinear modes of loading samples. The analysis used the responses averaged over the entire time series with multiple acoustic excitation of the sample. It was carried out a comparative analysis of the dependence of the average responses from pressure load versus time. Such a comparison of the experimental results allowed to define a set of parameters whose variation reflects the nature of the change of operating loads. Found parameter is proposed to use as a criterion for monitoring the stress-strain state of the products and designs of dielectric materials.