METHOD OF PREDICTING REMAINING LIFE OF METAL ARTICLES AND APPARATUS FOR REALISING SAID METHOD

摘要

FIELD: physics. ^ SUBSTANCE: article is divided into n sectors consisting of not less than three acoustic transducers; the article is loaded; acoustic emission signals are picked up and parameters thereof are measured; the arrival time of signals at the acoustic transducers is recorded and coordinates of developing coordinates are determined based on said time; characterised by that the article is first loaded to 0.5 of working load and maximum activity of signals exceeding the threshold level Ut>Uh, (where Uh is the noise level) is determined and the rate of loading is given depending on said activity, after which loading at 10-15% higher than the working load is carried out, followed by loading to maximum working load with given rate of loading; acoustic emission signals of said loading steps are picked up; acoustic emission signals are clustered based on the signal cross-correlation coefficient and the remaining life of metal articles is determined using a given mathematical formula. ^ EFFECT: high accuracy of determining remaining life. ^ 2 cl, 1 dwg