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Information × Registration Number 0219U003323, 0118U000482 , R & D reports Title Develop methods of evaluation and monitoring the working ability of aluminum welded constractions of aerospace technics popup.stage_title Head Rudavskyi Denys, Доктор технічних наук Registration Date 08-05-2019 Organization Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine popup.description2 In the framework of the unified model of the fatigue destruction, the principle of the accumulation of micro-damage in the early stages of fatigue in aluminum alloys such as В95пчАТ1 and Д16пчАТ, in particular, the formation of a system of microcracks in the vicinity of the stress concentrator, their growth and the transition to the macrocracks, are studied. The possibility of monitoring this process by means of the non-destructive testing is shown on the basis of analysis of the parameters of signals of the acoustic emission: the amplitudes of signals, their number and forms. The regularities of the change of the energy parameter of AE at the early stages of material destruction during the cyclic loading is established. It is shown that its value grows at the order in the process of accumulation of microplastic deformations and the origin of the microcracks system until the formation of the initial macrocrack in the fragile alloy В95пчАТ1 and in the plastic alloy Д16пчАТ, which makes it possible to identify the type and the stage of destruction. Product Description popup.authors Великий Петро Пилипович Долінська Ірина Ярославівна Канюк Юрій Ігорович Мельник Наталія Петрівна Осташ Орест Петрович Рудак Мар'ян Олегович Станкевич Олена Михайлівна Толопко Ярослав Дмитрович Чепіль Роман Володимирович Шаповалов Георгій Олександрович popup.nrat_date 2020-04-02 Close