Title of the article

DEVELOPMENT OF NEW TECHNOLOGIES FOR OBTAINING COMPOSITE MATERIALS AND PRODUCTS BY POWDER METALLURGY IN SSI PMI

Authors

Yarkovich A.M., Candidate of Technical Sciences, Academic Secretary, Powder Metallurgy Institute of the NAS of Belarus, Minsk, Republic of Belarus

In the section TECHNICAL INFORMATION
Year 2013 Issue 2 Pages 89-94
Type of article RAR Index UDK 621.762 Index BBK  
Abstract

One of the methods for production of composite materials and products is the powder metallurgy, which is the most economical method compared to conventional technologies (casting, machining, pressure treatment). SSI PMI has developed a number of technologies: production of highly porous cellular materials (foam metals) based on nickel, iron, titanium; production of porous frameworks based on carbon felt "Karbopon-active" (Svetlogorsk PA "Khimvolokno"); high-speed flame spraying of multicomponent powder coatings to protect the working surfaces of parts against corrosion and wear; injection molding of spool pairs of distributor ceramic valve.

Keywords composite materials, powder metallurgy, foam metals, injection molding, high speed flame spraying
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Bibliography
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Title of the article

MODELLING AND CRITERIA DETERMINATION OF STATIC STABILITY OF ENDO- AND EXOSKELETON

Authors

Chigarev A.V., Doctor of Physical and Mathematical Sciences, Professor, Head of the Department “Theoretical mechanics”, Belarusian National Technical University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
Borisov A.V., Associate Professor “Higher Mathematics”, Branch FGBOY VPO National Research University "MPEI", Smolensk, Russian Federation

In the section BIOMECHANICS
Year 2013 Issue 2 Pages 83-88
Type of article RAR Index UDK 531.2 Index BBK  
Abstract

Stability of a multilinked exoskeleton model in the phase of standing on the support leg in the form a system with the springs in the joints is researched in the work. The zones of spring stiffness necessary for maintenance of stable balance of the considered biomechanical system are estimated.

Keywords exoskeleton, stability, joints, springs stiffness, balance, single-support
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Title of the article

ANALYSIS OF INTERACTION BETWEEN FLAME TORCH AND INDEPENDENT COCURRENT FLOW

Authors

Belotserkovsky M.A., Doctor of Technical Sciences, Associate Professor, Head of the Laboratory of Gas-Thermal Methods of Hardening of Machine Parts, STC “Technology of Mechanical Engineering and Process Equipment”, Joint Institute of Mechanical Engineering of the NAS of Belarus, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

In the section TECHNOLOGICAL MECHANICS
Year 2013 Issue 2 Pages 68-73
Type of article RAR Index UDK 621.793 Index BBK  
Abstract

The paper presents a theoretical analysis of the flame spraying with an independent source of cocurrent flow. The spraying process is represented by "three-layer model", describing the motion of a two-phase jet in cocurrent flow. For the numerical simulation of two-phase turbulent flows used k-ε turbulence model by Londer-Jones. To determine the required velocity of the particles in the flame were calculated necessary velocities of cocurrent flow.

Keywords flame spraying, cocurrent flow, interaction modeling, particle velocity
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Title of the article

THE STRESS-STRAIN STATE OF THE TRIBO-FATIGUE SYSTEM ROLLER-SHAFT

Authors

Shcherbakov S.S., Candidate of Phisical and Mathematical Sciences, Associate Professor of the Department “Theoretical and applied mechanics”, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

In the section MECHANICS OF TRIBO-FATIGUE SYSTEMS
Year 2013 Issue 2 Pages 74-82
Type of article RAR Index UDK 539.3 Index BBK  
Abstract

Tribo-fatigue system roller-shaft, working in conditions of contact interaction between the roller and the shaft and the non-contact bending shaft is considered. The stress-strain state of the system is modeled by a superposition of stress states caused by the action of contact forces and non-contact shaft bending strength. The stress distribution under the action of normal and tangential contact force is calculated as a superposition of analytical fundamental solutions for the steady distributed forces over a rectangular area of the half space. The above calculation results show a significant difference of stress-strain state of tribo-fatigue system from that in the contact pair or in the bend shaft.

Keywords tribo-fatigue system, contact interaction, bend, roller-shaft, stress-strain state, fundamental solutions
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Title of the article

THE USAGE OF PROPERTIES OF OBLIQUE-ANGLED REINFORCED TEXTILES DURING WINDING THE FRAMES

Authors

Gorely K.A., Candidate of Technical Sciences, General Director OAO “Avangard”, Safonovo, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
Malyutin E.V., Chief Designer, OAO “Avangard”, Safonovo, Russian Federation

In the section

TECHNOLOGICAL MECHANICS

Year 2013 Issue 2 Pages 63-67
Type of article RAR Index UDK 539:374.002.62 Index BBK  
Abstract

The technology of winding the T-shape frames with the use of oblique-angled reinforced textiles is presented. The problem of determining the source size of the workpiece textile is solved. The condition that prevents the threads sliding during winding is found.

Keywords fabrics, mandrel, winding, deformation, thread, pseudo-band
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Bibliography
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