scholarly journals Methods for increasing the wear resistance of heavy loaded metal-polymer tribosystems

2021 ◽  
Vol 2131 (5) ◽  
pp. 052035
Author(s):  
I Kolesnikov ◽  
E Novikov ◽  
V Kolesnikov ◽  
A Sychev
Keyword(s):  
Wear Resistance ◽  
Mechanical Engineering ◽  
Friction Contact ◽  
Friction Units ◽  
Contact Surfaces ◽  
The Creation ◽  
The Given ◽  
Vital Factor ◽  
Metal Polymer

Abstract Methods of increasing the wear resistance and reliability of friction units are generating considerable interest being a vital factor in transport, mechanical engineering, and other fields of technology. The solution of the given problem is impossible without the creation of self-regulating structures on the friction contact surfaces. We strongly believe that this problem can be solved by creating multicomponent functional layers (hereafter MFL) on tribocontact.

scholarly journals Evaluation of operational properties of aviation oils by tribological parameters

2021 ◽  
Vol 99 (1) ◽  
pp. 43-50
Author(s):  
O. Mikosianchyk ◽  
◽  
O. Yakobchuk ◽  
R. Mnatsakanov ◽  
A. Khimko ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Hydrodynamic Lubrication ◽  
Practical Significance ◽  
Shear Stresses ◽  
Specific Work ◽  
Friction Contact ◽  
Near Surface ◽  
Antifriction Properties ◽  
Lubrication Mode ◽  
Contact Surfaces

The quality of aviation oils was evaluated online on the basis of their lubricating, antifriction, rheological and antiwear properties in the friction contact. The use of the software and hardware complex for evaluation of operational characteristics of triboelements is offered. Approbation of the proposed methodology was performed on aviation oils SM-9. The increase in antifriction properties of the “Bora B” SM-9 oil was established to be due to the formation of limiting adsorption layers of lubricant on friction-activated contact surfaces, which are characterized by low shear stresses of the lubricant, and their structuring provides high effective viscosity in the contact at a level of 5142 Pa.s. It was revealed that at start-up the lubricant temperature is 20 0С and the mixed lubrication mode prevails, but with increasing the lubricant temperature to 100 0С the elastic-hydrodynamic (contact-hydrodynamic) lubrication mode dominates, then at maximum rotation speed of friction pairs the hydrodynamic lubrication mode dominates, regardless of oil temperature, which indicates the effective separation of the contact surfaces due to the formation of a lubricating layer between them. Analysis of the specific work of friction in the friction contact showed that the instability of this parameter evidences to intensification of destructive processes in the near-surface layers of metal and reduction in its wear resistance. The decrease in wear resistance of the lagging surface in the conditions of rolling with sliding for all types of investigated oils is due to the different directions of the friction force vector in the contact. In the course of operation of friction pairs in nonstationary conditions, the softening of the surface metal layers occurs, which has a positive effect on the tribological processes in the contact. The practical significance of the work consists in developing a methodology of analysis of lubricants, which makes it possible to more accurately evaluate their performance and provide recommendations for the choice of lubricant for specific friction units.

scholarly journals Análise crítica da teoria dos direitos humanos na obra de Michel Villey

2019 ◽  
Vol 1 (40) ◽  
Author(s):  
Gustavo Rabay Guerra ◽  
Henrique Jerônimo Bezerra Marcos
Keyword(s):  
Human Rights ◽  
General Theory ◽  
John Locke ◽  
Thomas Hobbes ◽  
Christian Wolff ◽  
Legal Norms ◽  
The Creation ◽  
The Given ◽  
Intrinsic Contradiction ◽  
Do So

RESUMOEste artigo tem por objeto a Teoria dos Direitos Humanos em Michel Villey. Seu objetivo é apresentar uma contestação à alegação de Michel Villey de que os direitos humanos não podem ser considerados Direito. Para tanto, realiza uma apresentação da Teoria dos Direitos Humanos em Michel Villey, passando pela criação dos direitos humanos em Thomas Hobbes, a inversão de objetivos dos direitos humanos em John Locke e a expansão dos direitos humanos em Christian Wolff. Em seguida passa a apresentar a crítica de Michel Villey aos direitos humanos e as falhas deste autor ao realizar suas acusações, haja vista a possibilidade de solução das contradições (colisões) entre os direitos humanos, além de que não se pode confundir o critério de validade da norma com sua eficácia. O trabalho conclui pela juridicidade dos direitos humanos ao demonstrar que a suposta contradição não seria razão para retirar esta qualidade.PALAVRAS-CHAVEFilosofia do Direito. Direitos Humanos. Michel Villey. ABSTRACTThe present work deals with the General Theory of Human Rights in Michel Villey. Its purpose is to present a challenge to Michel Villeys’ claim that human rights are not legal norms. To do so, the text presents the General Theory of Human Rights in Michel Villey, including the creation of human rights by Thomas Hobbes, the changing perspective attributed to John Locke and the numerical expansion of human rights attributed to Christian Wolff. The text then presents Michel Villeys’ critics of human rights and the problems with those critics; specifically, that the given conflicts between norms aren’t sufficient to declare that they aren’t legal norms, other than that, the text points that in his critics Michel Villey confuses the concepts of validity of the norm with its effectiveness. The work concludes that human rights are legal norms and its supposed intrinsic contradiction is not sufficient to withdraw this quality.KEYWORDSPhilosophy of Law. Human Rights. Michel Villey.

scholarly journals Hydrogen wear resistance under the metal-polymer friction pairs operation

2018 ◽  
Vol 91 (3) ◽  
pp. 88-92
Author(s):  
Olexandr Burya ◽  
Valentina Dubkova ◽  
Igor Pachkovski ◽  
Timothy Rybak ◽  
Iryna Rula
Keyword(s):  
Wear Resistance ◽  
Polymer Friction ◽  
Metal Polymer

scholarly journals Stopping the Mobile Robotic Vehicle at a Defined Distance from the Obstacle by Means of an Infrared Distance Sensor

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5959
Author(s):  
Frantisek Klimenda ◽  
Roman Cizek ◽  
Matej Pisarik ◽  
Jan Sterba
Keyword(s):  
Experimental Data ◽  
Industry 4.0 ◽  
Autonomous Control ◽  
Front Part ◽  
Distance Sensor ◽  
The Creation ◽  
Robotic Vehicle ◽  
The Many ◽  
The Given

The article deals with the creation of a program for stopping an autonomous robotic vehicle Robotino® 4. generation at a defined distance from an obstacle. One of the nine infrared distance sensors located on the frame of the robotic vehicle in the front part of the frame is used for this application task. The infrared distance sensor characteristic is created from the measured experimental data, which is then linearized in the given section. The main aim of the experiment is to find such an equation of a line that corresponds to the stopping of a robotic vehicle with a given accuracy from an obstacle. The determined equation of the line is applied to the resulting program for autonomous control of the robotic vehicle. This issue is one of the many tasks performed by AGV in the industry. The introduction of AGVs into the industry is one of the many possibilities within Industry 4.0.

scholarly journals Technology to Increase Hydrocarbon Wear Resistance of Friction Units of Hydrogen Aggregates

2019 ◽  
Vol 297 ◽  
pp. 09001 ◽  
Author(s):  
Mikhail Shalygin ◽  
Sergei Kuznetsov
Keyword(s):  
Wear Resistance ◽  
Steel Surface ◽  
Friction Pair ◽  
Dehydration Process ◽  
Diffusion Capacity ◽  
Friction Units ◽  
Surface Irregularities ◽  
Friction Surfaces ◽  
Technological Methods ◽  
Wear Tests

The causes of hydrogen wear of the friction surfaces involved in hydrocarbon transfer and distillation processes are considered. Some technological methods for reducing the hydrogen wear of parts and friction units operating in hydrocarbon environment are given. A comprehensive technology for obtaining the properties of the surface layer is proposed, which provides an increase in the wear resistance of a friction pair and smoothing the surface roughness. The increase in wear resistance is based on several mechanisms: (1) decreasing biographical hydrogen due to the dehydration process; (2) smoothing surface irregularities by saturating the surface with silicon; (3) reducing the diffusion capacity of the steel surface caused by diffusion siliconizing; (4) reducing grain size of the material. Comparative wear tests were carried out, which showed the effectiveness of the proposed methods.

HODOČAŠĆE KA POEZIJI

2020 ◽  
pp. 115-126
Author(s):  
Đorđe Đurđevic
Keyword(s):  
Active Principle ◽  
The Creation ◽  
The Given

The paper examines the angelological-poetic relations in the poetry of Vasko Popa, Branko Miljković and Vojislav Karanović. Beginning with the medial position between the poet and the poem, the angel, with the poet‘s intervention, becomes an active principle in discovering the poem as such. He simultaneously exists in the space of the poem itself, as well as in the space of its realization in language, and its role is doubly translational: it translates the poet into the space of poetry and brings poetry closer to the poet. The given process flows through the original approximation and depiction of the poet and the angelic being / body, and it ends in the creation of a poem, which is, in its characteristics, close to the angelological complex.

scholarly journals Wear Resistance Improvement of Linear Block-Polyurethanes Under Conditions of Liquid Friction

2021 ◽  
Vol 29 (4) ◽  
pp. 287-293
Author(s):  
Anton Panda ◽  
Volodymyr M. Anisimov ◽  
Volodymyr V. Anisimov ◽  
Konstantin Dyadyura
Keyword(s):  
Wear Resistance ◽  
Composite Materials ◽  
Electromagnetic Radiation ◽  
Chemical Structure ◽  
Friction Contact ◽  
Rapid Destruction ◽  
Hydrolysis Of ◽  
Intermolecular Crosslinking ◽  
Resistance Improvement ◽  
Linear Block

Abstract A significant disadvantage of parts made of linear block polyurethanes under conditions of friction contact in the presence of an aqueous medium is the intensification of hydrolysis processes and decrease in volume strength. It was proposed to slow down the hydrolysis of polyurethanes in three ways: by directed changes in chemical structure, by electromagnetic radiation of different intensities and by creation of composite materials, based on the principle of additional intermolecular crosslinking at the manufacturing and hot processing stages. The conditions for the formation of a smooth wear-resistant surface that protects the material from rapid destruction are revealed.

scholarly journals Perancangan Dan Pembuatan Mesin Tetas Telur Burung Puyuh Berbasis Mikrokontroler

2020 ◽  
Vol 8 (1) ◽  
pp. 18
Author(s):  
Jihadul Akbar Karim ◽  
Edidas Edidas
Keyword(s):  
Egg Hatching ◽  
Infra Red ◽  
Hatch Success ◽  
The Creation ◽  
Arduino Uno ◽  
Design And Manufacture ◽  
The Given

Tujuan dari perancangan dan pembuatan alat ini adalah untuk menghasilkan software dan alat tetas telur burung puyuh otomatis dengan menggunakan arduino uno sebagai mikrokontroler. Arduino uno akan mengatur seluruh kerja sistem alat tetas telur sesuai dengan program yang diberikan. Pembuatan alat ini menggunakan metode rak geser untuk memutar telur secara otomatis. Dengan metode rak geser ini motor akan bergerak setiap 3 jam sekali selama 3 detik menggeser rak sehingga telur akan berputar. Hasil pembuatan alat ini adalah terciptanya sebuat alat tetas telur burung puyuh otomatis berbasis mikrokontroler. Setelah melakukan percobaan menetaskan telur burung puyuh alat ini memperoleh keberhasilan penetasan sebesar 85 %. Berdasarkan hasil percobaan dapat dinyatakan bahwa sistem penetasan telur burung puyuh menggunakan alat ini bekerja dengan baik dan bisa diimplementasikan sebagaimana tujuan pembuatan alat ini.Kata kunci : Arduino Uno, DHT 11, Passive Infra Red (PIR), dimmer. The purpose of the design and manufacture of this tool is to produce automatic quail egg software and hatching tools using Arduino Uno as a microcontroller. Arduino Uno will manage the entire work of the hatchery system in accordance with the given program. Making this tool uses a sliding rack method to rotate eggs automatically. With this sliding rack method the motor will move every 3 hours for 3 seconds to move the rack so the eggs will spin. The result of making this tool is the creation of a microcontroller-based automatic quail egg hatching tool. After conducting experiments, hatching quail eggs, this tool gained 85% hatch success. Based on the results of experiments it can be stated that the quail egg hatching system using this tool works well and can be implemented as the purpose of making this tool. Keywords: Arduino Uno, DHT 11, Passive Infra Red (PIR), dimmer.

scholarly journals THE CREATION OF AUTHORITATIVE FILE NAMED THE «COLLECTIVE AUTHOR» ON THE BASE OF ABIS «IRBIS» FOR THE ELECTRONIC CATALOGUE OF V. SUKHOMLYNSKY STATE PEDAGOGICAL SCIENCE LIBRARY OF UKRAINE

1970 ◽  
Vol 10 (2) ◽  
Author(s):  
Svitlana H. Kovalenko ◽  
Raisa P. Havryliuk
Keyword(s):  
Control Technology ◽  
State Pedagogical ◽  
History Of ◽  
The Creation ◽  
The Given ◽  
Pedagogical Science

In the period of creation of electronic catalogue in V. Sukhomlynsky state pedagogical science library of Ukraine the question of conducting of authoritative file of titles of collective author is actual. The given article is devoted to the history of sources of authoritative control, technology of creation of authoritative file «Collective author» and also to the problems which arise up during the creation and conducting of the file.

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