Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
In the present work, the water flux densities of nozzles with flat jet and full cone jet were experimentally measured using an apparatus in industrial scale that reproduces the secondary cooling of the continuous casting of round billets of Vallourec Tubos do Brasil. A mathematical model for heat transfer and solidifi…
Sn-Cu alloys are promising alternatives to the replacement of Pb-containing solder alloys. However, the effects of the cooling rate on the solidification microstructures of these alloys and the corresponding influence on the mechanical and corrosion resistances are not well known. In the present study, the transient d…
editorial
On the basis of the Navier-Stokes equations for the case of a ‘thin layer’, the continuity equation, Lame equations, and Darcy equation, considering the boundary conditions on the pin and bearing face at the layer interface, a method of generating an exact self-similar solution to the problem of calculating the hydrod…
For the first time, the acoustic emission (AE) method applicability to study the processes ongoing in the microporous medium under capillary pore filling with liquid is investigated. In particular, the temperature contribution to the dynamics of the porous materials impregnation is studied. The experimental results ha…
A one-dimensional thermoelastic contact problem on the vertical insertion of a rigid half-plane moving horizontally at a constant speed over the elastic coating (strip) while the bottom side of the latter rigidly resting on the non-deforming foundation is considered. On the foundation surface, the temperature is kept…
It is stated analytically and proved experimentally that in the heavy-loaded conjugations such as a break system of the rolling stock the maximum temperature in the wheel is reached not on the surface but in the subsurface layer. The study of the non-stationary contact coupled thermoelasticity problem on the brake dis…
A model of the indirect control flow divider for the steady state operation which maintains a twin-engined hydromechanical system in the synchronous common mode is considered. The divider is presented as an astatic regulator consisting of the sensor, amplifier, and regulating elements. However, its main static charact…
An element of the working body (brush) of the aerodrome sweeper – a synchronous hydromechanical drive – is considered. It is based on the throttle flow divider of the non-spool type plunger setters, and it is driven by two hydraulic motors. Its mathematical model is offered. Special attention is given to describing th…
Vibration and noise levels of the split-type spindle heads are theoretically investigated. It is noted that in this case, the head oscillating system changes and this leads to the need of modeling the vibroacoustic dynamics of these structures. The calculation of the noise and vibration spectra is based on the power b…
The applicability of the jatropha culture as a biofuel material is considered. The description of the culture and its main characteristics are presented. The seed technological properties characterizing the subsequent oil quality are studied. The fundamental agronomical properties under growing the jatropha culture, t…
Various surfactants of different molecular weights, including alkylamine, poly(oxypropylene) diamine (POP), and maleic anhydride grafted polypropylene (PPgMA) oligomers, were used for simultaneous funtionalization and reduction of graphite oxide (fGO). In this study, the effect of molecular weight and compatibility of…
A facile route for controlled alignment of electrospun multiwalled carbon nanotube (MWCNT)-reinforced Polyvinyl Alcohol (PVA) nanofibers using slotted collector geometries has been realized. The process is based on analytical predictions using electrostatic field analysis for envisaging the extent of alignment of the…
Some ways to improve the efficiency of the enterprise management system are considered. The solution to this problem from the perspective of the synergistic approach, will allow increasing the utilization of the industrial enterprises’ potential, accelerating their economic development rate, and ensuring their product…
The causes of the destruction of the crane Gottwald НМК 170 EG (63 t) which happened in 2011 on the territory of “Novorossiysk Commercial Sea Port” are analyzed. The structural and engineering recommendations on the platform bearing capacity restoration are developed. These proposals are based on the failure analysis…
A plane deformation of a circular cylinder under different systems of statically equivalent loads is considered. The loading is done by the symmetrical constant-rate loads with respect to the centerline; the loads are applied to the cylinder side. Three load cases are analyzed: diametric forces along two generators (H…
The method of frequency estimation of the simultaneously and independently operating generators under unpredictable changes in the measurement interval size is studied. Errors arising under the method application due to the transiency of the oscillator frequencies on the frequency estimation interval are considered. T…
The applicability of the artificial neural networks to the synthesis of the intellectual systems with the synergetic control law is considered. The key points of the synergetic approach to the system synthesis problem are stated. An example of the synergetic synthesis of the robot electrodrive control law under the co…
The structure of communication and its role in the management when building the University production and business integration are studied. The organization of the educational process on the basis of the communication component and its integration into the innovative educational activities of the University are consid…
The processes of surface nanostructuring of titanium carbide by Nd radiation: YAG-laser with the wavelength of 1.06 microns is investigated. The laser pulse length is 40 ns, the travel rate is 10 mm / s. The radiation energy density on the surface of titanium carbide at the oscillation frequency of 2000 Hz is 2.06 ÷ 6…