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Information × Registration Number 0220U100507, 0119U101298 , R & D reports Title Development of methodological principles and regulatory documents for the technical state diagnostics and repair of electric locomotives bogie frames popup.stage_title Head Skal'skyy Valentyn R., Доктор технічних наук Registration Date 21-01-2020 Organization Karpenko Physico-Mechanical Institute of NASU popup.description2  To achieve this goal, the basics of statistical approaches have been considered firstly to strength and reliability calculation of metal structures elements and determination their fatigue life under non-regular cyclic loading. Then based on the energetic approach of fracture mechanics a mathematical model for determining the subcritical period of fatigue crack growth is applied. The method of determination of mechanical parameters of non-regular cyclic load on the electric locomotive bogie frame under its operating mode was used to calculate the residual life of a frame with a fatigue crack in the bogie bolster. In order to increase the reliability, the acoustic-emission method of estimating the moment of crack start is proposed in determining the characteristic of the static fracture toughness of the used frame of the locomotive bogie. Product Description popup.authors Andrejkiv Oleksandr Ye. Velykyj Petro P. Dolins`ka Iryna Ya. Dolichnij Petro M. Kaniuk Yurii I. Karpiv Bogdan V. Klym Bogdan P. Melnyk Nataliia P. Mokryj Oleg M. Okrepkyj Yurii S. Pochapskyi Yevhen P. Rudavskyy Denys V. Savyc`kyj Vasyl` M. Skal'skyy Valentyn R. Stankevych Olena M. Tolopko Jaroslav D. popup.nrat_date 2020-04-02 Close