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Information × Registration Number 0225U001139, (0121U110234) , R & D reports Title Influence of accumulation of scattered damage on fatigue resistance of materials of structural elements under multicycle loading popup.stage_title Вплив накопичення розсіяного пошкодження на опір втомі матеріалів елементів конструкцій за багатоциклового навантаження Head Matokhniuk Lev Ye., Кандидат технічних наукPysarenko Heorhii H., д.т.н. Registration Date 26-01-2025 Organization GS Pisarenko Institute of Strength Problems of the National Academy of Sciences of Ukraine popup.description1 To determine the influence of regularities of deformation aging of physical and mechanical properties on fatigue resistance of structural materials according to the parameters of statistical distribution of characteristics of discrete process of scattered fracture, namely: to establish new regularities of influence of process of accumulation of scattered fracture as a fracture factor under multicycle loading. popup.description2 A set of computational and experimental methods for studying the physical and mechanical properties of steels and alloys under multi-cycle loading has been developed. The general nature of the regularities of the influence of mechanical loading conditions of laboratory specimens on the fatigue localization kinetics of structural steel under monotonic tension and symmetric tension-compression was revealed. A unified methodological approach to the analysis of discrete characteristics of local deformation of a material under monotonic and periodic loading of samples is proposed. A methodological approach to assessing the limit state of accumulation of the deformation relief of the surface of a metal sample in the range of cyclic loads has been developed, which can be used to monitor the current state of operational damage to the metal or the residual life of a metal construction. The connection between the characteristics of fatigue localization and the material surface deformation relief accumulated in the material under the influence of cyclic loading is established. To assess the state of accumulation of damage arising in the process of cyclic loading, it is proposed to consider the ratio of the mutually inverted maximum amplitudes of the binary relief of peaks and troughs in local areas of the material surface as such. It has been shown metrologically that, based on these characteristics, it is possible to quantify the state of residual life of a construction component or the relative durability of a cyclically loaded laboratory material sample.  Product Description popup.authors Bialonovych Andrii V. Hopkalo Oleksii P. Kopchevsky Pavlo M. Leonets Viktor A. Lukashevych Andrii O. Mailo Andrii M. Matokhniuk Lev Ye. Pysarenko Heorhii H. Puhach Nina I. Rovkov Viktor O. popup.nrat_date 2025-01-26 Close