Zobrazeno 1 - 10
of 16
pro vyhledávání: '"O. V. Kononuchenko"'
Autor:
O. M. Herasymchuk, O. V. Kononuchenko
Publikováno v:
Strength of Materials. 53:405-416
A model to describe the kinetics of short fatigue crack growth from an obtuse stress raiser (notch) is proposed. The model makes it possible to calculate the kinetic diagram of short fatigue crack growth rate from a stress raiser and to estimate the
Autor:
O. V. Kononuchenko, O. M. Herasymchuk
Publikováno v:
Strength of Materials. 53:213-221
Results of in situ measurements of short fatigue cracks growth from a blind hole of diameter 0.6 and 1.6 mm in specimens from steel 45 during cyclic loading at different cycle asymmetry are presented. Studies of fatigue fracture specimens have shown
Autor:
O. M. Herasymchuk, O. V. Kononuchenko
Publikováno v:
Strength of Materials. 52:722-730
The paper presents results of fatigue tests in the tension–compression and tension–tension modes of specimens of 45 steel: smooth specimens and specimens with a blind hole of different diameters of 0.6 and 1.6 mm. The fatigue resistance of specim
Publikováno v:
International Journal of Fatigue. 83:313-322
A system of microstructure-dependent fatigue failure models that allows calculating the number of stress cycles to failure of smooth specimens in the absence of data on the fatigue resistance of the material is proposed. Fatigue life is represented a
Publikováno v:
International Journal of Fatigue. 81:257-264
A model is presented for calculation of the fatigue life to crack initiation in specimens with surface stress concentrators. The model is tested for the results of fatigue testing specimens of Ti–6Al–4V titanium alloy condensate prepared by elect
Autor:
O. V. Kononuchenko, O. M. Herasymchuk
Publikováno v:
Strength of Materials. 45:163-170
We present the results of fatigue life prediction for smooth specimens of VT3-1 titanium alloy in seven structural states using the proposed model. The prediction results presented in the form of fatigue curves (S–N curves) before crack initiation
Autor:
O. V. Kononuchenko, O. M. Herasymchuk
Publikováno v:
Strength of Materials. 45:44-55
This paper presents a review of the fatigue life models at stages 1 and 2 of fatigue fracture. Based on the modification of these models, a model is proposed that allows one to predict residual life to fracture under conditions of high-cycle uniaxial
Publikováno v:
Strength of Materials. 43:374-383
A calculation model is developed that makes it possible to predict the fatigue limit σ−1 of specimens with technological surface defects based on the data on the material microstructure and stress concentrator geometry. The fatigue test results ar
Autor:
Bernard Foing, M. V. Kovalchuk, Natalia Kozyrovska, O.S. Korniichuk, I.S. Rogutskyy, T.L. Lutvynenko, T.M. Voznyuk, O. V. Kononuchenko, Iryna Zaetz, S.P. Mashkovska, O.V. Mytrokhyn, V. A. Kordyum
Publikováno v:
Advances in Space Research. 37:93-99
A precursory scenario of cultivating the first plants in a lunar greenhouse was elaborated in frames of a conceptual study to grow plants for a permanently manned lunar base. A prototype plant growth system represents an ornamental plant Tagetes patu
Autor:
V. V. Negrutska, T.M. Voznyuk, Tetyana Lytvynenko, M. V. Kovalchuk, O. V. Kononuchenko, Natalia Kozyrovska, S. Yu. Rymar
Publikováno v:
Biopolymers and Cell. 20:530-534
The effect of Pseudomonas sp. IMBG163 on wheat seedlings (Triticum aestivum L. cv. Katyusha) was studied. This strain has been marked with the gus reporter gene in order to examine a colonization pattern and to monitor its maintenance on the plant ro