3_2015_sen_11

Title of the article

FUNDAMENTAL LAWS OF THE ULTIMATE STATE OF OBJECTS AT THE COMBINED EFFECTS OF MULTI-PARAMETER POWER FACTORS AND THERMODYNAMIC ENVIRONMENT. PART I
Authors

Sosnovskiy Leonid A., Dr. Techn. Sc., Professor Director, This email address is being protected from spambots. You need JavaScript enabled to view it., S&P Group Tribofatigue Ltd, Gomel, Republic of Belarus

Zhuravkov Michael A., Dr. Phys.-Math. Sc., Professor, Minister of Education of the Republic of Belarus, Ministry of Education of the Republic of Belarus, Minsk, Republic of Belarus

Sherbakov Sergei S., Cand. Phys.-Math. Sc., Associate Professor, Associate Professor of the Theoretical and Applied Mechanics Department of the Mechanical and Mathematical Faculty

Bogdanovich Alexander V., Dr. Techn. Sc. Professor of the Theoretical and Applied Mechanics Department, Belarusian State University, Minsk, Belarus

Makhutov Nikolay A., Corresponding Member of the Russian Academy of Sciences, Dr. Techn. Sc., Professor, Chief Researcher

Zatsarinnyi Vladimir V., Cand. Techn. Sc. Leading Researcher of the Laboratory of Mechanics Failure and Liveness,  Institute of Machines Science named after A.A.Blagonravov of the Russian Academy of Sciences, Moscow, Russia
In the section MECHANICS OF TRIBO-FATIGUE SYSTEMS
Year 2015 Issue 3 Pages 79-94
Type of article RAR Index UDK 539.3 Index BBK  
Abstract

It is a survey-analytical article, which describes a number of criteria of limit states (LS) of complex objects and identifies methods to measure all the parameters necessary for it practical use. It presents the energy theory of LS of tribo-fatigue and mechanothermodynamical (MTD) systems, taking into account the interaction dialectics of efficient energies and therefore irreversible damages under fatigue loading, friction and temperature influence. The fundamental laws of the LS at the combined effects of multiparameter power factors and the environment are analysed. The experimentally grounded (over 600 experimental results) fundamental MTD function of forecast evaluation of different LS (static, fatigue, contact fracture) for pure metals, non-ferrous alloys, constructional steels and polymer materials is presented.
Keywords

LS, tribo-fatigue system, MTD system, theory of strength, criteria of LS, effective energy of potential deformation, Λ-interaction of effective energies (damages), MTD function of critical states, multicriteria diagram of LS of tribo-fatigue systems
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3_2015_sen_10

Title of the article

THE METHOD OF CORRECTION HYSTERESIS PIEZOSCANNER ATOMIC FORCE MICROSCOPE
Authors

Mohammed Salem A.A. Postgraduate Student, This email address is being protected from spambots. You need JavaScript enabled to view it., Belarusian National Technical University, Minsk, Republic of Belarus

Melnikova Galina D. Research Associate

Makhaniok Aleksandr A., Cand. Phys.-Math. Sc. Senior Researcher, This email address is being protected from spambots. You need JavaScript enabled to view it.

Chizhik Sergey A., Academician, Dr. Techn. Sc., Professor First Deputy Chairman of the Presidium of the NAS of Belarus, Presidium of the Nftional Academy of Sciences of Belarus, Minsk, Republic of Belarus

Kyzhel Natalya S. Junior Researcher, A.V. Luikov Heat and Mass Transfer Institute of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus
In the section BIOMECHANICS
Year 2015 Issue 3 Pages 73-78
Type of article RAR Index UDK 53.088.3 Index BBK  
Abstract

The method of correcting software hysteresis piezoscanner atomic force microscope was proposed. The algorithm for correction was used for the samples of silicon, mica, polysulfone, and human erythrocytes, and platelets. It is shown that the proposed method can effectively eliminate the difference between the curves of supply and discharge of the working area due to piezo hysteresis and is valid for different delay times between measurements at neighboring points of these curves.
Keywords

piezo hysteresis, static force spectroscopy, the point of contact
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3_2015_sen_8

Title of the article

ASSESSMENT OF THE QUALITY OF STRUCTURAL STEELS BY THEIR ABILITY TO RESIST BRITTLE FRACTURE UNDER THE STRESS CONCENTRATION
Authors

Shiyan Artur V., Cand. Phys.-Math. Sc. Senior Researcher of the Department of Physics of Strength and Fracture, This email address is being protected from spambots. You need JavaScript enabled to view it.

Meshkov Yuriy Ya., Corresponding Member of the National Academy of Sciences of Ukraine, Dr. Techn. Sc. Chief Researcher of the Department of Physics of Strength and Fracture, This email address is being protected from spambots. You need JavaScript enabled to view it., Kurdyumov Institute of Metal Physics, Ukrainian National Academy of Sciences, Kiev, Ukraine
In the section TECHNOLOGICAL MECHANICS
Year 2015 Issue 3 Pages 59-63
Type of article RAR Index UDK 669.01:539.4;539.2 Index BBK  
Abstract

New parameter for assessment of structural quality - the measure of structural quality μσPms by the residual mechanical stability Pms is offered. It exhibits their residual possibility to resist embrittlement under the stress concentration. The analysis of changes in structural quality of a number of alloys under the effect of two types of stress raisers at uniaxial tension and static bending is executed.
Keywords

brittle strength, stress raisers, mechanical stability, tendency to embrittlement, structural quality
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  • Shiyan A.V., Meshkov Yu.Ya., Soroka K.F. Metodicheskie osnovy opredelenija kriticheskoj temperatury hrupkosti stalej v uslovijah koncentracii naprjazhenij [Methodological principles for the assessment of critical temperature of brittleness of steels at stress raise]. Mehanika mashin, mehanizmov I materialov [Mechanics of machines, mechanisms and materials], 2015, no. 2(31), pp. 47-52.
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3_2015_sen_9

Title of the article

BASICS OF THE COMPUTER SIMULATION PROCEDURE FOR COMMERCIAL VEHICLE CAB PASSIVE SAFETY TESTING
Authors

Shmelev Aleksei V., Cand. Techn. Sc. Director of the Republican Computer Center of Mechanical Engineering, This email address is being protected from spambots. You need JavaScript enabled to view it.

Lisovski Eduard V.Junior Researcher

Korotki Viacheslav S.Researcher, Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus
In the section COMPUTER MECHANICS
Year 2015 Issue 3 Pages 64-72
Type of article RAR Index UDK 624.042 Index BBK  
Abstract

Studied and described the basics of computer modeling technique for truck cab testing in compliance with the international UNECE safety regulation No 29. Analyzed the features of the tests in accordance with Revision 2, 03 series of amendments to the Regulation. Shown an example of truck cab computer test simulation with use of ANSYS LS-DYNA software. Model properties settings and simulation results analysis concerned with estimation of the residual space in the cabin is made using LS-PrePost.
Keywords

computer simulation, virtual testing, finite element method, truck cab, crash test, passive safety, ANSYS, LS-DYNA, LS-PrePost, UNECE Regulation No. 29
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3_2015_sen_7

Title of the article

SELECTING THE TECHNOLOGICAL PARAMETERS OF STEEL COATINGS FORMATION BY HYPERSONIC METALLIZATION
Authors

Belotserkovsky Marat A., Dr. Techn. Sc., Associate Professor Head of the Laboratory of Gas-Thermal Methods of Machine Parts Strengthening, This email address is being protected from spambots. You need JavaScript enabled to view it.

Sosnovskiy Aleksey V., Cand. Techn. Sc., Associate Professor Senior Reseacher

Pryadko Aleksandr S. Senior Reseacher, Joint Institute of Mechanical Engineering of the National Academy of Sciences of Belarus, Minsk, Republic of Belarus

Yalovik Aleksandr P. General Director JSC “Neftezavodmontazh”, Novopolotsk, Republic of Belarus

Trusov Dmitriy I. Master’s Student, Belarusian National Technical University, Minsk, Republic of Belarus
In the section TECHNOLOGICAL MECHANICS
Year 2015 Issue 3 Pages 52-58
Type of article RAR Index UDK 621.793 Index BBK  
Abstract

The main idea of the article is to generalize the results of studies of the formation of the steel coatings produced by Hypersonic metallization, defining rational modes of recovery and hardening of transport machinery and technological equipment technologies. To achieve this goals the installation of hypersonic metallization model ADM-10 was used, sprayed materials - steel wire 95H18SH (AISI 440-C) and 40H13 (AISI 420). To increase the adhesive strength of coatings with the substrate an intermediate layer of an alloy H20N80 was coated. The studies revealed that increasing of initial temperature of spraying gas enhances the aerodynamic forces acting on a particle of the molten metal. Increasing of the nozzle radius enhances the maximum speed of the particles by extending the distance of dispersing. Activation process of the electric arc metallization by heating of the
atomizing gas allows to increase the speed of the particles smaller than 40 microns, essentially without effect on the speed of the larger particles. Studying of density and adhesion of deposited coatings showed that if the spraying distance increases more than on 200 mm and over, the porosity increases sharply, and the bonding
strength decreases. Therefore advisable to limit spraying gas temperature and pressure at combustion chamber of the Hypersonic metallization installation to the size of 2 300-2 500 K and 0,6-0,8 MPa respectively. Amount of oxygen in the coating at hypersonic metallization is 1,5-2,0 times less in comparison with the traditional method of electric metallizing. parameters of the hypersonic metallization process and displacement speed of the metalizer which provide quality coatings spray wires of steel alloys were defined.
Keywords

steel coatings, hypersonic metallization, porosity, coating properties
  You can access full text version of the article.
Bibliography
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