Technologies and Engineering

Control of quality of the electrical elements of the acoustic emission signaling systems at the time of loading of the sample

Goal. Finding the relationship between the acoustic emission signal in sensitive elastic elements, in this case elastic plates (flat springs), when removing the load from them, and their characteristics, for constructing a control technique. Methodology. The method of acoustic emission is based on the capture and amplification of acoustic vibrations emitted by defects, as well as by dislocating dislocations when the structure is loaded and unloaded. Results. An experiment was performed and an acoustic emission signal was obtained when the load from the elastic element under investigation was removed. A regularity is established between the main characteristics of the elastic elements and the acoustic signal, which varies with respect to the loading of the object. For clarity, several diagrams of samples from different materials are given. Scientific novelty. For the first time, a piezoelectric sensor of a new layout was used to investigate the relationship between the parameters of an acoustic signal and the characteristics of elastic elements. This made it possible to obtain more qualitative indications of the study of the acoustic signal. Practical significance. The significance of the obtained research results lies in the improvement of flaw detection with the use of acoustic methods and the possibility of complete control of elastic sensitive elements at the production stage, which will reduce the marriage of finished products

пружний елемент; сигнал акустичної емісії; широкосмуговий п'єзоелектричний датчик