Zobrazeno 1 - 10
of 13
pro vyhledávání: '"R. Ya. Yarema"'
Publikováno v:
Nauka ta progres transportu, Vol 55, Iss 1, Pp 54-61 (2014)
Purpose. The problem of determining the residual life of frame bogie elements of locomotives is a great importance for predicting their work safely and avoidance potential failures on the track. This especially concern cases when such elements have c
Externí odkaz:
https://doaj.org/article/fdca972bc8f9469c9dc0ae0164d8348a
Publikováno v:
Materials Science. 53:623-629
We analyze the main types of defects appearing near the sites of concentration of mechanical stresses in the material of tires of the wheels of electric locomotives. We study the distribution of stresses near the areas of potential appearance of fati
Publikováno v:
Materials Science. 53:431-443
We analyze the results of investigations of the acoustic-emission diagnostics of corrosion defects in materials and establish the relationship between the total count, energy, amplitude of acoustic radiation and the corrosion cracking of steels and m
Publikováno v:
Materials Science. 53:295-305
We analyze the main aspects of acoustic-emission diagnostics of the corrosion processes in structural materials and present the results of numerical investigations of the electrochemical corrosion by the method of acoustic emission. We also discuss t
Publikováno v:
Strength of Materials. 49:778-787
The paper describes the energy approach, which is employed for the development of the calculation model to determine the subcritical growth period of short fatigue cracks in elastic-plastic plates using the specific energy components. The authors pro
Publikováno v:
Materials Science. 52:485-491
A new procedure for the numerical evaluation of the residual service life of a wheelset axle is proposed. The procedure is based on the kinetic equation of fatigue crack growth obtained within the energy approach of the fracture mechanics of material
Autor:
D. V. Rudavs’kyi, I. Ya. Dolins’ka, V. R. Bas, R. Ya. Yarema, V. R. Skal’s’kyi, O. S. Dubyts’kyi
Publikováno v:
Strength of Materials. 48:220-226
The calculation procedure for the period of subcritical fatigue crack growth near the lower design-envisaged hole of the pivot joint-coupled bogie frame of the electric locomotive is proposed. The procedure is based of the calculation model of the fa
Publikováno v:
Materials Science. 51:475-480
We propose a technique for the evaluation of the residual life of a hydrogenated element of a pipe containing a cracklike defect on its inner surface. The kinetics of crack propagation is studied with regard for the influence of the hydrogen concentr
Publikováno v:
Nauka ta progres transportu, Vol 55, Iss 1, Pp 54-61 (2014)
Purpose. The problem of determining the residual life of frame bogie elements of locomotives is a great importance for predicting their work safely and avoidance potential failures on the track. This especially concern cases when such elements have c
Publikováno v:
Scopus-Elsevier
We propose a method for the evaluation of the residual life of a spring plate of a truck containing a semielliptic crack under the action of cyclic loading and a hydrogen-containing medium. The method is based on the numerical model of fatigue crack