Subjects -> MANUFACTURING AND TECHNOLOGY (Total: 363 journals)
    - CERAMICS, GLASS AND POTTERY (31 journals)
    - MACHINERY (34 journals)
    - MANUFACTURING AND TECHNOLOGY (223 journals)
    - METROLOGY AND STANDARDIZATION (6 journals)
    - PACKAGING (19 journals)
    - PAINTS AND PROTECTIVE COATINGS (4 journals)
    - PLASTICS (42 journals)
    - RUBBER (4 journals)

MACHINERY (34 journals)

Showing 1 - 27 of 27 Journals sorted alphabetically
Acta Mechanica Solida Sinica     Hybrid Journal   (Followers: 8)
Advanced Energy Materials     Hybrid Journal   (Followers: 31)
Applied Mechanics Reviews     Full-text available via subscription   (Followers: 27)
CORROSION     Full-text available via subscription   (Followers: 20)
Electric Power Components and Systems     Hybrid Journal   (Followers: 7)
Foundations and Trends® in Electronic Design Automation     Full-text available via subscription   (Followers: 1)
International Journal of Machine Tools and Manufacture     Hybrid Journal   (Followers: 8)
International Journal of Machining and Machinability of Materials     Hybrid Journal   (Followers: 4)
International Journal of Manufacturing Technology and Management     Hybrid Journal   (Followers: 8)
International Journal of Precision Technology     Hybrid Journal   (Followers: 1)
International Journal of Rapid Manufacturing     Hybrid Journal   (Followers: 3)
International Journal of Rotating Machinery     Open Access   (Followers: 2)
Journal of Machinery Manufacture and Reliability     Hybrid Journal   (Followers: 2)
Journal of Manufacturing and Materials Processing     Open Access  
Journal of Mechanics     Hybrid Journal   (Followers: 9)
Journal of Strain Analysis for Engineering Design     Hybrid Journal   (Followers: 5)
Journal of Terramechanics     Hybrid Journal   (Followers: 4)
Machine Design     Partially Free   (Followers: 183)
Machine Learning and Knowledge Extraction     Open Access   (Followers: 12)
Machines     Open Access   (Followers: 4)
Materials     Open Access   (Followers: 4)
Mechanics Based Design of Structures and Machines: An International Journal     Hybrid Journal   (Followers: 8)
Micromachines     Open Access   (Followers: 2)
Pump Industry Analyst     Full-text available via subscription   (Followers: 1)
Russian Engineering Research     Hybrid Journal  
Sensor Review     Hybrid Journal   (Followers: 2)
Surface Engineering and Applied Electrochemistry     Hybrid Journal   (Followers: 6)
Similar Journals
Journal Cover
Journal of Machinery Manufacture and Reliability
Journal Prestige (SJR): 0.238
Number of Followers: 2  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1934-9394 - ISSN (Online) 1052-6188
Published by Springer-Verlag Homepage  [2469 journals]
  • Improved Wear Resistance of a Metal-Coated Radial Slider Bearing

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      Abstract: Based on the equation for the flow of a micropolar fluid for a “thin layer,” the continuity equation, the equation describing the radius of the molten contour of a shaft coated with a low-melting metal alloy taking into account the relationship for the dissipation rate of the mechanical energy, and an asymptotic and exact self-similar solution for a radial slider bearing with a nonstandard support profile adapted to friction conditions in the hydrodynamic mode with a partial filling of the working gap are considered. Analytical dependences are obtained for the field of velocities and pressures and for the bearing capacity and the friction force in the zero approximation (without the melt) and in the first approximation (with the melt), as well as for the radius of the melted surface of the shaft coating.
      PubDate: 2022-04-01
       
  • Simulation of the Autonomous Curvilinear Motion of a Robotic Aircraft
           Towing System

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      Abstract: A mathematical model of a robotic aircraft towing system and a method for planning motion paths have been developed. An algorithm for the control of the joint motion of the robotic mobile towing vehicle and aircraft based on deviation from the specified path has been created. The simulation shows that the suggested algorithm for designing motion paths and modelling the motion of the robotic towing airfield system makes it possible to ensure towing of aircraft along a specified path with a given accuracy.
      PubDate: 2022-04-01
       
  • Development and Investigation of a Parallel-Structure Mechanism with
           Toothed Gears Taking into Account Friction

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      Abstract: A new parallel-structure mechanism, the distinctive feature of which consists in the presence of a kinematic decoupling obtained resulting from the use of cardan joints in each kinematic chain, as well as cylindrical and bevel toothed gears, is considered. In this case, the rotational motion is transmitted to the output link from the motors mounted on sliders moved with the help of translational motors located on vertically mounted racks. The structural analysis, positional problem, working zone, as well as force analysis taking into account friction forces, are presented.
      PubDate: 2022-04-01
       
  • Estimation of the Changes in Sound-Proofing Characteristics of Structural
           Panels Subject to High-Intensity Acoustic Loading

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      Abstract: An approach based on analysis of acoustic loads, which makes it possible to use the experimentally obtained characteristics of sound insulation to find its characteristics under conditions of a heavy load, is presented. As a result, data are obtained that confirm the change in the sound insulation of different structural panels when the external acoustic pressure is transferred beneath an experimental panel; at the same time, there are general features in the parameters of the acoustic pressure drop. The revealed features made it possible to study the sound insulation of three experimental samples under their in-service acoustic loading.
      PubDate: 2022-04-01
       
  • The Influence of the “Piston Heat Belt–Sleeve” Gap on Heat Exchange
           in the Combustion Chamber of an Engine Depending on the Fuel Utilized

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      Abstract: Numerous experimental works concerning the comparative analysis of heat transfer processes in hydrogen and gasoline engines have confirmed the noticeable increase in heat loss in the case of applying hydrogen. Without denying the influence of higher values of the flame propagation velocity and the hydrogen combustion temperature contributing to intensification of the convective heat transfer in the combustion chamber, the present article shows that, when using hydrogen as a fuel, the main problem consists in penetration of the flame into the gap between the heat belt of the piston and the sleeve. We analyze this phenomenon using the flame extinguishing theory by Ya.B. Zeldovich. On the base of the unsteady heat flux measurements in the gap, as well as of 3D simulation of both the thermophysical processes in the combustion chamber and the thermal state of the piston of the experimental gasoline engine converted to hydrogen, we explain the phenomenon of relative increase in heat losses in the hydrogen engine, its existence previously having been shown experimentally without theoretical justification.
      PubDate: 2022-04-01
       
  • Calculating the Reliability of Rolling Stock during Normal Operation

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      Abstract: — The main methods of troubleshooting electrical equipment of rolling stock are discussed: organoleptic, parametric analysis, probability-time, half-split (dichotomy), logical diagnostic, and graph theory methods. It is determined that the greatest effect can be achieved by creating computer-based diagnostic tools for implementation in every locomotive depot and improving the preventive maintenance system, as well as switching to condition-based maintenance. A practical example of diagnosing electrical equipment of rolling stock using the back-to-back method is described.
      PubDate: 2022-04-01
       
  • Dynamics of a Circulatory Support Pump Rotor Adjusted for Radial Forces of
           a Passive Magnetic Bearing Set

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      Abstract: — Installing a radial passive magnetic bearing that consists of a pair of permanent magnet rings may be a successful technical solution for a number of devices as it eliminates wear and friction and is inexpensive. The low load capacity and radial stiffness of this design limit its scope of application. This article proposes four alternative designs of a passive magnetic bearing for the rotor (impeller) of a circulatory support pump. A finite element model is constructed, verified, and used in a theoretical study of magnetic fields of a radial passive magnetic bearing. The arrangement that provides the greatest radial stiffness and load capacity at given size restrictions is identified. The obtained force—radial displacement dependence is used to model the dynamics of a circulatory support pump impeller.
      PubDate: 2022-04-01
       
  • Calculation and Assessment of the Average Residual Life of Unrecovered
           Objects Dependent on a Given Level of Reliability

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      Abstract: The formulas for computing and assessing the average residual life of unrecovered objects in dependence on a given level of reliability are proved. The proved formulas and estimates are valid for any law for using the resource of unrecovered objects. Examples of using the results in problems of the extended life and operation of unrecovered engineering objects are provided.
      PubDate: 2022-04-01
       
  • Structural and Kinematic Analysis of a Lever Variator with Spatial
           Transforming Mechanisms

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      Abstract: The scheme and operation principle of a lever variator with spatial transforming mechanisms are described. Based on the structural analysis, the family of the studied variator was determined. The use of spherical kinematic pairs was shown to be preferable for reliability of operation of the device. A mathematical model of the kinematics of a lever variator with two transforming mechanisms is proposed, and diagrams of the change in the gear ratio depending on the rotation angle of the input crank and the position of the stone on the fixed link are constructed.
      PubDate: 2022-04-01
       
  • Properties of Wear-Resistant Composite Coatings Produced by High-Speed
           Boronizing

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      Abstract: In this paper, we obtain wear-resistant composite FeB boride coatings with a thickness of up to 800 nm for 1–2 minutes using high frequency heating of steel 65G samples under a layer of charge based on P-066 fused borate flux containing boron carbide. Using the X-ray phase analysis and metallography, the composition and structure of the coatings were established. The depth distribution of the microhardness was studied, and the relative wear resistance was determined.
      PubDate: 2022-04-01
       
  • Review of Methods for Controlling the Phase Transformation Temperatures in
           Alloys with SME and Thermomechanical Return Voltages

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      Abstract: The characteristic peculiarities of alloys with the shape memory effects and superelasticity are considered, and the principles of monitoring the thermomechanical characteristics of the material of the part blank before its direct use are presented. Also shown are the methods of determining the phase transformation temperatures of the shape memory TiNi-based alloys. The advantages and the disadvantages of the methods are analyzed depending on their labor expenditures and the result reliability.
      PubDate: 2022-04-01
       
  • Obtaining Starch Nanoparticles with the Use of Intensifying Resonance Wave
           Action

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      Abstract: — In the present study, starch nanoparticles are obtained by precipitation intensified using resonance wave action. The formation of starch nanoparticles is confirmed by dynamic light scattering, scanning electron microscopy, and X-ray diffraction analysis. It is shown that the starch nanoparticles formed are spheres with a diameter ranging from 28 to 160 nm. The results can be applied in creating new energy- and resource-saving techniques for the formation of functional starch nanoparticles.
      PubDate: 2022-01-01
      DOI: 10.3103/S1052618822010034
       
  • Solution of the Nonparametric Identification Equation in a Dynamic System
           Based on the Hyperdelta Approximation

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      Abstract: This paper is devoted to the method for defining the weight function in a dynamic system based on the hyperdelta approximation of autocorrelation and cross-correlation functions of random input and output signals with arbitrary distributions, as well as on the Laplace transform. The results can be used to perform nonparametric identification of the dynamic systems within the constraints on the computing resources and to measure the input and output signals.
      PubDate: 2022-01-01
      DOI: 10.3103/S1052618821060091
       
  • Calculation of the Kinetic Energy of a Rigid Body in the General Case of
           Three-Dimensional Motion with Arbitrary Rotation

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      Abstract: An exact solution is obtained for the kinetic energy in the general case of spatial movement of rigid bodies with arbitrary rotation including a change in the products of inertia. The Lagrangian description of the movement and the principle of superposition, which provides the geometric summation of velocities and accelerations of cooperative Lagrangian movements for any particle at any instant of time, are used. The integrand in the equation for the kinetic energy is represented as the sum of the same velocity components of cooperative plane-parallel movements. The polar moments of inertia are not changed during movement, and they can be calculated by the current or initial state of the body. The products of inertia are changed and become zero during rotation with respect to the principal central axes only for bodies with the same principal moments of inertia, for example, for a sphere. In other cases, the difference in the principal moments of inertia leads to cyclic changes in the kinetic energy with possible manifestation of precession and nutation, the amplitudes of which are dependent on the angular rotational velocities of the body. An example using equations for a robot with one screw and two rotational kinematic pairs is presented.
      PubDate: 2022-01-01
      DOI: 10.3103/S1052618822010022
       
  • Calculated and Experimental Analysis of Wave Hydromassage Devices

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      Abstract: To carry out studies of periodic mechanical effects on people, a new type of massagers, wave hydromassagers, capable of creating 3D (in particular, spiral) waves in hydrodynamic flows in a wide range of amplitudes, frequencies, and pressures, including those with decompression zones on the treated surface, is considered. The main types of wave hydromassagers are discussed. The results of experimental study and mathematical modeling of wave hydromassagers of one of the developed types, namely, jet-vortex ones, are presented. It is shown that the best agreement between the calculated and experimental data is obtained using the large eddy simulation (LES) method. The data can be used in the design of wave hydromassagers and other hydrodynamic oscillators for various purposes.
      PubDate: 2022-01-01
      DOI: 10.3103/S1052618822010101
       
  • Transfer of Abrasive Tool Material to the Surface of a Titanium Alloy
           at Different Stages of Grinding by a Wheel Made of Silicon Carbide

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      Abstract: The morphology and chemical composition of the surface of a titanium alloy are studied at different stages of grinding by an abrasive tool made of silicon carbide with a ceramic bonding. It is established that grinding is accompanied by transfer of the wear products of the grinding wheel to the processed surface. The products introduced into the processed surface are crystals of silicon carbide and ceramic bonding. The transfer intensity is evaluated by the concentration of silicon. It is revealed that the maximum transfer occurs at the first stage of grinding directly after dressing the abrasive tool.
      PubDate: 2022-01-01
      DOI: 10.3103/S1052618822010071
       
  • Phenomenological Analysis of Indentation Diagrams for Topocomposites on a
           Compliant Substrate

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      Abstract: A qualitative analysis of the experimental indentation diagrams for topocomposites has been conducted. These diagrams are unloading curves with linear and nonlinear sections at the end of the unloading curve and characterize the interfacial delamination along the coating–substrate interface. It has been shown that the exfoliation in both topocomposites results in a linear relationship between the load and the indentation depth. The width of the hysteresis loops confirms the higher damping capacity of an aluminum nitride coating as compared with a titanium nitride coating. The relevance of studying the effect of the coating structure on the deformation behavior and damage to topocomposites at high contact pressures is shown.
      PubDate: 2022-01-01
      DOI: 10.3103/S1052618822010113
       
  • Evaluation of the Strength of a Composite Cylinder for Compressed Gas

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      Abstract: To assess the strength of composite pressure vessels, it has been proposed to use a layer-by-layer method for calculating the circumferential and axial stresses in symmetrical pairs of layers, for which simple criteria for failure under biaxial tension are valid. According to the rhombic model of composite element with symmetrical reinforcement, the permissible stresses are limited to three straight lines, for the plotting of which it is sufficient to determine only two values of strength under uniaxial tension of pipes with windings (0) and (±45°). The values of the critical stresses on the sides of the rectangle formed determine the conditions for either cracking of the matrix or tearing of the fibers, which is important for the procedure for considering the degradation of the properties as damage accumulates. It is convenient to represent the limiting surface in the stress space in the form of an inclined ellipse, the parameters of which can be found from experimental points by the least squares method. The task of optimal design of multilayer winding cylinders is set according to the criterion of equality of safety factors for all pairs of layers.
      PubDate: 2022-01-01
      DOI: 10.3103/S1052618822010083
       
  • Analysis and Control of the Strength, Useful Life, and Safe Operation
           Risks of Power Plants with Various Kinds of Energy Commodities

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      Abstract: According to the scientific analysis of the conditions of the transition from regular to catastrophic situations at thermal power, hydropower, and nuclear power facilities, an important role in maintaining and improving the safe operating conditions of power plants within the framework of current concepts, strategies, norms, and regulations is played by the level of the scientific and practical rationale of predictable and acceptable risks characterizing the regular and limit states of these facilities. The strategy of solving these problems for power generation facilities in the direction considered defines and fixes the transition to risk analysis and management as the backbone system of ensuring safe operating conditions in addition to the current approaches and the approaches in development, which are mainly based on parameters such as the strength and useful life.
      PubDate: 2022-01-01
      DOI: 10.3103/S105261882201006X
       
  • Determining the Design Parameters of Braided Aerospace Composite Lattice
           Structures

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      Abstract: An analytical approach to calculate the stiffness in a braided aerospace lattice structure is explored in this paper. This approach follows two objectives. The first is to obtain the initial data for subsequent calculations using FEM. The second is to select parameters in the braided aerospace lattice structure. Analytical models are developed to solve these tasks. The models analyze the microstructural behavior of braided composites to assess their mechanical properties making feasible testing against experimental data. This approach is based on the primary assumption of a two-scale periodic fiber distribution in a composite in order to associate the mechanical properties of the composite with individual phases. The first scale refers to roving, which is a unidirectional fiber-reinforced composite. The mechanical properties of the roving are estimated in this scale. The second scale refers to a woven unit cell, so the final mechanical properties of the composite are expressed using this scale. The results are used to formulate micromechanical and mesomechanical models. These models can be used to analyze braided composites and to determine the mechanical properties in interwoven grid areas.
      PubDate: 2022-01-01
      DOI: 10.3103/S1052618822010095
       
 
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