bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of mathematical models of micromechanical devices
Authors: Bibikov S V , Bolshakov V O , Kalinkina M E , Korobeynikov A G , Pirozhnikova O I , Tkalich V L 
Published: July 2019

Abstract
The article is devoted to the temperature error of micromechanical accelerometers, as well as the development of structural and technological solutions to improve the accuracy parameters of micromechanical devices, primarily the stabilization of output parameters. To reduce the error, a number of methodologies and design and technological solutions were developed that helped to improve accuracy, i.e. reduce temperature error. Analytical methods for estimating errors, methods for analyzing the effect of temperature on a measuring circuit and identifying elements that lead to a distortion of the measuring function of conversion were considered. Different types of errors were considered. Used statistical methods. Calibration issues considered. The proposed techniques can significantly improve the accuracy of determining the error model coefficients, as a result of which a more accurate accelerometer calibration is obtained. The use of the algorithmic component has significantly reduced the effect of temperature on the output signals.
Automatic packer reliability prediction under pulsed transient flooding of hydrocarbon reservoirs
Authors: Ya Khabibullin M , Suleimanov R I 
Published: July 2019

Abstract
For pulsed transient flooding of hydrocarbon deposits (installed on the tubing string below the packer) of the injection well, hydraulic impulse devices are used. When they work (generation of pulses in the injected fluid) in the tubing string, hydraulic shocks occur at a frequency equal to the output frequency of pulses generated by the devices. The result is a reciprocating movement of the tubing string and the packer. Hence, for effective injection of fluid, it is necessary to provide automated long-term reliability of the sealing elements of the packer and long-term sealing of the annular space. Joint movement of the packer and pressure pulsation intensify mechanochemical aging processes. To improve durability of packer seals during long-term pulsed injection of fluid into the well, it is necessary to replace rubber materials with rubber-fabric materials and use damping equipment along with impulse devices. Their use will significantly reduce the amplitude of packer oscillation (stroke length of sealing element S) and maximum accumulation time Wmax.
Intelligent systems for monitoring and controlling chip formation when cutting difficult-to-machine materials
Authors: Maksarov V V , Makhov V E 
Published: July 2019

Abstract
This research addresses topical issues of creating industrial monitoring systems for chips, which are formed when materials are cut, based on light field-based optical detectors. A proposed scheme uses a light field (LF) method to register formed chips with an optical detector. An algorithms and monitoring methods for key geometric parameters of chip shapes are developed based on the analysis of images obtained from LF cameras. They feature digital image capturing and morphological analysis. For practical implementation of developed algorithms, National Instruments software platform is used. This research shows that the result accuracy in determining geometric characteristics of chips using the proposed solutions makes it possible to run diagnostics for cutting and material processing equipment.
Milling equipment modernization: a unit for utilizing fibrous waste of woodworking production
Authors: Mihailichenko S A , Dubinin N N , Goncharov S I 
Published: July 2019

Abstract
Reprocessing of natural and technogenic materials, recycling of industrial waste, production of goods at the first stage is associated with grinding of materials. Standard grinders often do not meet the performance requirements, while having high energy and significant metal consumption. When woodworking industry waste is recycled in order to produce thermal insulation, technologies, including standard equipment, both for processing of raw materials and producing the end product in the form of compressed granular material are used. This research examines a method of producing thermal insulation materials and solving the issues of grinding organic fibrous materials in a multifunctional grinding unit.
The design model of the electrical conductivity of a poroelastic thrust bearing
Authors: Opatskikh A N , Solop S A , Kolobov I A 
Published: July 2019

Abstract
The article is devoted to the formation of calculation of hydrodynamic models of a poroelastic thrust bearing profile adapted to the friction conditions, taking into account the dependence of the penetrability of the porous layer on the guide surface, the electrical conductivity and the viscosity of the liquid lubricant under pressure. There has been the evaluation of the elastodynamic parameter (M), adapted to friction conditions with the profile and parameters, characterizing the dependence of the electrical conductivity, viscosity of the lubricant and penetrability of the porous layer under pressure on the carrying capacity and friction force.
Information technologies in teaching chemistry to future specialists in automated engineering
Authors: Saigushev N Y , Vedeneeva O A , Kashuba I V , Tsaran A A , Shcherbakova I A 
Published: July 2019

Abstract
The article reveals the problem of using information technologies in the process of teaching chemistry to future specialists in automated engineering. The modern level of development of automated engineering requires highly educated specialists, creative people capable of free thinking. This sets a task for higher education to develop methods for the development of such competitive personality. In recent decades this task has been successfully solved through the development and implementation of various information technologies in the educational process.
Modeling of technological processes at enterprises of timber processing industry
Authors: Shanin I I 
Published: July 2019

Abstract
Dynamic development of the Russian market of timber products and tightening of technological advantages give particular relevance to the use of advanced technological methods to optimize the production process. It will lead to an increase in the competitiveness of enterprises. Improvement of approaches to managing the technological development of enterprises, their provision with various types of innovative resources and technologies for the optimal use of all reserves of industrial enterprises is of particular importance in the context of the formation of effective areas of production system technological development. The following should be noted in terms of the development of woodworking equipment production. 23 factories produced 30–35 thousand woodworking machines and lines per year in the Russian Federation in the early 1990s. Currently, according to Rosstat, only 4–6 thousand units of woodworking equipment are manufactured. Machine-tool enterprises sharply reduced output or ceased to exist since most of domestic woodworking machines turned out to be uncompetitive in comparison with the equipment of leading foreign companies. In recent years, there has been an increase in the tendency to reduce the relative share of consumption of domestic woodworking equipment on the Russian market. Share of domestic equipment decreased from 29 % to 7 % according to expert estimates in the period from 2000 to 2017. Accordingly, imported equipment makes more than 91 % on the market. The article has reviewed and analyzed furniture enterprises of timber industry complex connected with woodworking process.
Tests of energy-saving additives to engine oils on gasoline engine stand
Authors: Boiko M V , Nikogosov M V , Ponomarenko A G 
Published: July 2019

Abstract
The influence of energy-saving engine oil additives on the parameters of the internal combustion engine has been studied. The tests were carried out on a stand with a 4-stroke gasoline engine. The additives contained a pentaerythritol ester and a complex compound of copper or molybdenum. It is shown that the introduction of additives in motor oils SAE 10W40, SAE 30 reduces fuel consumption, reduces the content of CO and CH in the exhaust gases. The resulting effect is explained by the formation on the conjugate surfaces of a tribopolymer antifriction film, which reduces the gap between the piston and the cylinder. This leads to an increase in compression and a more complete combustion of fuel.
Development of microwave plasma method for measurement of wear particle parameters in lubricant oil samples from aircraft gas turbine engines
Authors: Drokov V G , Drokov V V , Ivanov N A , Myrishenko V V , Skudaev Y D , Hodunaev A Y 
Published: July 2019

Abstract
The paper describes the new microwave plasma method for gaining information about wear particles in oil samples from aircraft gas turbine engines (GTE). The method allows one to measure the element concentration in the form of wear particles (the size is more than 2 micrometers), element concentration in the form of metal-organic admixture and sub-micrometer particles (less than 2 micrometers), quantity and elemental composition of particles simultaneously and in real time. The microwave plasma analyser has electrodeless microwave plasmatron of original design, which allows for the proportional ratio between size of particles and the output signal for particles less than 60 micrometers in size. For this analyser, the ratio of quantity of wear particles hitting axial (high-temperature) plasma regions to overall particle quantity is no less than 0,95. Compressor pumped air is used as a plasma-forming medium. For analysis of the oil sample from the oil filter, new diagnostic features are suggested and their relation to the technical state of the engine is suggested.
Ultrasonic sprayer of liquid samples for atomic-emission microwave plasma analyzer
Authors: Drokov V G , Drokov V V , Kaloshin A E , Skudaev Y D , Myrishenko V V , Hodunaev A Y 
Published: July 2019

Abstract
The design of an ultrasonic sprayer of aviation oils is proposed and its performance is investigated. Theoretical and experimental studies have been conducted to study the response of the spray tube when exposed to ultrasonic vibrations. Its resonance lengths are determined for given frequencies of ultrasonic vibrations. The aerosol flow parameters are estimated (length, flow diameter, droplet size), and the coefficient for the entry of particles of the analyzed metallic impurity in the sprayed liquid into the plasma is estimated.
Analysis and experimental evaluation of contact interaction of simple punch shapes with concrete
Authors: Furmanov D V , Klochko N N , Tyuremnov I S 
Published: July 2019

Abstract
The article presents the results of the study of contact interaction of cylindrical, conical and roller-shaped punches with concrete. The stress-strain state of the material is assessed during penetration. The paper discusses how the angle of tapering of a simple punch shape affects the contact strength of the material. There are some hypotheses in the paper that describe the nature of the interaction of simple punch shapes with the material, there is a high convergence of the results with the main provisions of the mentioned hypotheses. In particular, it is found that the contact stresses in the area of contact of a punch with the material in areas significantly exceeding the strength limit of concrete can be characterized by the ratio of the strained volume of the material to the volume of the pressure bulb of the material. Its size is determined by the properties of the material.
Consideration of various factors influencing acoustic logging equipment production accuracy
Authors: Gilmanova A M 
Published: July 2019

Abstract
To improve quality of technological machines and equipment, quality and reliability of the downhole material obtained using acoustic logging equipment, it is necessary to take into account all factors affecting reliability and accuracy of the tools at all the stages of their life time - development, production, operation, and interpretation of the well material. The analysis results are presented in the diagram generalizing the principles of high-precision acoustic logging equipment production optimization.
Modernization of the Audi 90 suspension in preparation for the rally
Authors: Kamerloher V A , Naiman R V 
Published: July 2019

Abstract
The paper considers the vehicle sports – technical sports. The authors put special emphasis on racing, rally and some other kinds of technical sports where ground-based vehicles, i.e. cars, are employed. The work is devoted to the history and evolution of the racing sport and technical development of sport cars. In addition, the authors also mention the founders and geography of spreading the sport since its origin. The classification and design of racing cars are analysed and discussed in this paper. Technical requirements and standards have been taken into account while considering the peculiarities of the sport cars, without which no sport car is allowed to participate in any sport motor racing event.
Application of mathematical modeling to optimize the operation of a tubular oil heating furnace
Authors: Osintsev K V , Prikhodko I S 
Published: July 2019

Abstract
An energy balancing scheme has been developed for building a mathematical model of a tubular furnace for heating oil in accordance with the principle of its operation. This will allow taking into account all the heat fluxes, and the result of the work will be a reduction in fuel consumption for the tube furnace. The use of a particular calculation scheme depends on the nature of the task and the features of the boundary conditions of heat transfer. The main factors when choosing a calculation scheme are the accuracy and duration of the calculation. The scientific novelty is that for a tubular heating furnace for the first time it is proposed to use the method of energy balances in the chambers of radiation and convection. The practical significance of the work is to reduce fuel consumption for a tube furnace, as well as the possibility of utilizing the heat of oil refining products when building a mathematical model of a distillation column. The calculation algorithm using the energy balances method for mathematical modeling of heat transfer processes allows balance equations for all furnace sections, including the radiation chamber and the convection chamber. After which several successive approximations are carried out using linear programming. In addition, there are technological solutions to optimize fuel use.
Nitriding of multilayer steel materials
Authors: Plokhikh A I , Polikevich K B 
Published: July 2019

Abstract
The paper presents results of the metallographic study aimed to determine the impact of the structurization degree of multilayer metal materials on the parameters of diffused layers in the course of thermochemical treatment by nitriding. It is demonstrated that reduction of the laminar layer thickness from 100 to 2 μm results in more than twofold increase of the diffused layer in comparison with the reference polycrystalline sample. It is determined that more significant structure refinement for multilayer materials particularly to the estimated layer thickness of 0.3 μm massively reduces the depth of diffusant penetration into the material along the laminar boundaries.
Mobile lubrication and filling units to reduce mining machines and equipment downtime when providing maintenance
Authors: Safronchuk K A , Knyazkina V I , Ivanov S L 
Published: July 2019

Abstract
Currently in the mining industry there is an observed increase in demand for portable lubrication and filling units used by technical maintenance and repair of different quarry machinery. These oil-servicing mobile workshops provide the possibility to organize maintenance at facilities, situated far from each other, and quick delivery of everything necessary for technical maintenance and repair at mining machines and equipment operation location.
Analysis of the environmental status and measures for safety and environmental protection in oil and gas producing areas
Authors: Dzhanzakov I I , Medetov Sh M , Imangalieva G E , Bashirov V D , Sagitov R F 
Published: July 2019

Abstract
Environmental pollution in the areas of drilling and field development is one of the main priority environmental problems. At the same time, as observations show, the main objects of pollution are groundwater, hydro-and lithosphere (open water bodies, the bottom of water areas, soil and vegetation cover). Sources of pollution are the results of the process itself. The greatest danger posed to environmental objects is technological drilling waste, which is accumulated and stored directly on the drilling site. Drilling waste includes drilling cuttings, waste drilling fluids and drilling wastewater. They are formed in the process of washing the well. In the process of deepening a well at the bottomhole, a drill is formed. Hydrotransport that drills mud from the bottom of the well to the surface of the rock under the influence of man-made factors turns into drill cuttings. Therefore, in the cleaning system of the circulating system of a drilling rig, the cuttings are not separated from the drilling fluid. But drill cuttings differ in volume and, most important from an environmental point of view, in physicochemical properties. The volume of cuttings is equal to the volume of the wellbore. When designing, the volume of drill cuttings is approximately taken by 20% more than the volume of cuttings.
Features of technology for producing wood and polymer composites by extrusion method
Authors: Ponikarov S I , Sagitov R F , Bashirov V D , Dudorov V E , Korotkov V G , Akhmadiyeva Z R , Tsyrkaeva E A 
Published: July 2019

Abstract
Currently, in Russia, much attention is paid to the recycling and recycling of industrial and household waste. A huge amount of waste is accumulated and not processed in various industries. The bulk of food production waste (beer pellet, alcohol bard, husk) either simply merges, due to the inability of the enterprise to process it, or is used as fuel (husk). In the wood processing industry, there is also no proper processing of the waste (chips, shavings, sawdust). This also includes waste polymer materials, the amount of which increases every year. The relevance of the use of food waste, wood processing, polymer industries in building materials and products is associated primarily with the problems of preserving the environment (they are not subject to decay, corrosion) but also with the problem of resource conservation. At present, the use of polymer waste in the construction materials industry is widespread, and quite an acute problem is the disposal of waste from food and wood processing industries. A particularly promising direction of recycling is the production of high-filled plastics which can be used as construction composite materials. The paper discusses the technology of producing wood-polymer composites by extrusion. It is proposed to use wheat bran, pre-treated with chemical reagents, in the composite in addition to traditional components (plastics and sawdust) in the proposed technology.
Influence of internal grids on particle motion in the fluidized bed reactor
Authors: Solovev S A , Soloveva O V , Sheshukov E G 
Published: July 2019

Abstract
A fluidized bed reactor designed for the dehydrogenation of isobutane is considered. The process takes place at high temperature and with heat absorption. A feature of the apparatus is the mechanism of block heating due to the catalyst entering through the pipe located in the center. The analysis of the effect of the grids located in the apparatus on the reactor heating is carried out.
Improving operational characteristics of wave gears
Authors: Tupitsyn A A , Pogodin V K 
Published: July 2019

Abstract
The advantage of wave gears is a possibility to obtain greater transmission ratios in one stage. The main drawback is a short life of a flexible gear due to large deformations with cyclically changing stresses. The proposed technical solution provides using a roller chain instead of the flexible gear. The gear arrangement is similar to a two-wave gear in which there is a wheel used instead of the flexible gear, with each tooth of it consisting of three rollers located in axial alignment. Middle row rollers are located along the edge of the master jaw. The outermost row rollers of the located along the lesser diameter of the jaw come into external engagement with two immobile gear wheels which have the number of the teeth equal to the number of the chain rollers. As a result, the chain does not rotate. The outermost row rollers that are located along the greater diameter of the jaw come into internal engagement with the follower wheel. At the cost of the differences of the follower wheel teeth and the chain rollers, the motion transmission occurs. The supposed transmission arrangement allows providing a transmission ratio in one stage up to 6 and higher that reduces the dimensions of the actuator.
Design, study and development of new equipment for sheet-metal forming
Authors: Botashev A Yu , Bayramukov R A , Bisilov N U , Malsugenov R S 
Published: July 2019

Abstract
A new facility for sheet-metal forming ensuring forming with heating of a workpiece to the temperature interval of warm or hot machining is designed and developed. The facility contains a case connected to a die where a working cylinder and a combustion chamber, separated from each other by the piston, are placed. Heating and deformation of a stamped workpiece is made under the influence of combustion products of fuel mixes in a working cylinder and dies. The distinctive feature of this unit is that the final forming stage ensures considerable increase of deforming effort that considerably enhances its technological capacity. Practical testing of the designed unit was performed. High quality products were obtained, which makes it possible to recommend this facility for use in small-scale production.
Thermal EMF in film resistors under focused semiconductor laser irradiation
Authors: Alexandrov V A , Besogonov V V 
Published: July 2019

Abstract
The work studies thermal EMF generation in thick-film and thin-film resistors under focused semiconductor laser irradiation. The thermal EMF in film resistors is maximum in the case of laser irradiation of the boundaries of the resistant film contact with electrodes. The signal sign depends on the polarity of resistors brought into the measurement circuit, location of the laser spot on the boundaries of the resistive film contacts with electrodes and on the edges of nonuniformities. Thermal EMF includes direct and pulsed components during local irradiation of the surface of resistors by periodic laser pulses. The frequency and duration of the edge of unipolar EMF pulses on the electrodes of the resistors are equal to the frequency and duration of the laser pulses, respectively. In silver-palladium thick-film resistors, the maximum of the thermal EMF signal can be used to determine the boundaries of the surface section with palladium reduced by hydrogen.
Faults technology of Lada Kalina cars by means of defined complex of diagnostic parameters
Authors: Bulatov S V 
Published: July 2019

Abstract
The technology of observing the big group of cars allows us to establish how often we meet the diagnoses that we are interested in and what the odds of these diagnoses are according to diagnostic parameters for the developed system. On the basis of the calculations according to the data of the experimental researches we can say that for the car with the set of signs, corresponding to the set complex of diagnostic parameters, the most probable diagnosis is the first one: fault of electrical equipment elements. The obvious condition of the diagnostics efficiency is the significant decline of the failure probability of nodes, units and vehicles in general and also the exception of incorrect scheduled maintenance that is reached under the qualitatively perfected system of diagnosing.