ACOUSTIC-EMISSION METHOD FOR DISTRIBUTING STRESS LEVEL IN REINFORCED-CONCRETE STRUCTURES

摘要

The invention relates to the field of nondestructive testing of physical and mechanical characteristics of materials by acoustic emission (AE) and can be used to control the stress relieving state in concrete constructions. The purpose of the invention - improving the accuracy and reliability of the control. In a given design point control is performed calibrated local dynamic exposure, taken after each exposure AE signals, measured values ​​of the mean and median frequency energy received signals AE, .po obtained parameters determined variance, mean and correlation coefficient of the median and average energies the frequency and the level of stress in the structure is determined by the previously prepared calibration samples concrete changes depending dispersion expectation and correlation coefficient tion medium energy and median frequencies of varying levels of stress. 1 z.p.f BACKGROUND yl 2. THX