Acoustic Emission Control of Fatigue Destruction of Thin Aluminium Alloy Structures

This paper presents the results of the analysis of AE parameters recorded during the loading of samples with fatigue defects under operating loads. During the loading, the possibility of locating signals at low values of loads that do not exceed the yield strength of the material, and at which it is possible to identify the beginning of the defect development, is shown. Based on the results of experimental work, the possibility of locating cracks in thin-walled structures made of aluminium alloys and assessing their propensity to develop under operating loads using the AE method has been confirmed. The characteristic features in the distribution of informative AE parameters during the development of crack defects in the material, after carrying out repair work according to accepted.