scholarly journals Features of the Grinding Technology with the Use of Nanomodified Coolant

2022 ◽  
Author(s):  
I.I. Artemov
Keyword(s):  
Surface Layer ◽  
Mathematical Models ◽  
Mechanical Engineering ◽  
Practical Implementation

Abstract. The results of the analysis of the possibility of constructing a system for ensuring the quality of mechanical engineering parts by nanomodification of the surface layer are presented. The implementation is considered on the example of grinding technologies with nanomodified lubricating coolant. Mathematical models describing the process of creating conditions for nanomodification of the surface layer and algorithms for practical implementation are presented.

scholarly journals Improving the Accuracy and Quality of the Surface Layer of Products by Local Magnetic Pulse Processing

2021 ◽  
Vol 346 ◽  
pp. 01029
Author(s):  
Vasily Gritsyuk ◽  
Evgeny Smolentsev ◽  
Dmitriy Krokhin ◽  
Aleksandr Pechagin
Keyword(s):  
Heat Treatment ◽  
Surface Layer ◽  
Mechanical Engineering ◽  
Magnetic Pulse ◽  
Surface Layers ◽  
Processing Methods ◽  
Pulse Processing ◽  
Accuracy And Stability

This article discusses development of technological modes and the process of stabilizing the properties of surface layers of large-sized parts, ensuring accuracy and stability of the products’ shape during their manufacture and operation, while using combined processing methods that replace costly heat treatment at mechanical engineering enterprises.

Inspecting the Quality of a Surface Layer in Non-Rigid Shafts Turning by Adaptive Control over the Process of Cutting

2019 ◽  
Vol 973 ◽  
pp. 212-218
Author(s):  
Juliy L. Chigirinskiy ◽  
Pavel S. Nesterenko ◽  
Elena N. Smirnova
Keyword(s):  
Surface Layer ◽  
Adaptive Control ◽  
Control System ◽  
Mathematical Models ◽  
Cutting Forces ◽  
Control Algorithm ◽  
Radial Component ◽  
Adaptive Control System ◽  
Finish Turning

A schematic structure of the adaptive control system is presented, the application of which will ensure the consistency of the quality of the surface layer of surfaces obtained by turning non-rigid parts. Refined mathematical models which describe patterns forming the radial component of the cutting forces and roughness of finish turning of steel 18NiCrMo5 are developed, thus forming the basis of a control algorithm of the presented adaptive control system.

scholarly journals NEUROCOMPUTER MODELING OF CONTACT RIGIDITY

2016 ◽  
Vol 2016 (2) ◽  
pp. 156-166
Author(s):  
Петр Тихомиров ◽  
Petr Tikhomirov ◽  
Елена Лемешева ◽  
Elena Lemesheva ◽  
Николай Булхов ◽  
...  
Keyword(s):  
Surface Layer ◽  
Mathematical Models ◽  
Quality Parameters ◽  
Promising Method ◽  
Bolted Connections ◽  
Contact Rigidity ◽  
Deformed State ◽  
Technical Systems ◽  
To Receive

Contact rigidity of a joint is one of the main criteria of operability of forest cars. It defines vibration activity and durability of the tightened bolted connections therefore its assessment will allow to predict behavior of technical systems. In work the technique of an assessment of contact rigidity by means of the nerocomputer modeling allowing to consider parameters of quality of a blanket is presented. Results of re-searches allowed to receive mathematical models for contact rigidity. In the paper there is presented a procedure of contact rigidity estimate with the aid of neurocomputer modeling. A contact rigidity of a joint is one of the basic criteria of machine and mechanism capacity for work. It defines vibration activity and strength of tightened bolted connections therefore its estimate will allow forecasting the behavior of technical systems. Neurocomputer modeling is a promising method allowing taking into account quality parameters of a surface layer of machinery at the analysis of a deformed state.

Ultrajet Mesodiagnostic Probabilistic Model for Surface Layer’s Variable Defectiveness of Complex Technology Products

2021 ◽  
Vol 882 ◽  
pp. 289-295
Author(s):  
Andrey Leonidovich Galinovskiy ◽  
Aleksandr Aleksandrovich Barzov ◽  
Mary Alekseevna Prokhorova
Keyword(s):  
Surface Layer ◽  
Sufficient Conditions ◽  
Calculated Data ◽  
Hydrodynamic Effect ◽  
Topographic Features ◽  
Technology Products ◽  
Complex Technology ◽  
Materials Used ◽  
Necessary And Sufficient

Technologically, ultrajet mesodiagnostics (UJM) consists of local hydroerosive indentation by ultrajets (UJ) of water on the surface of the analyzed object (OA) and the subsequent study of the results of this minimally invasive microdestructive effect on its surface layer. Obviously, mathematical models’ construction of the functional relationship between the informative-physical signs of hydroerosive UJ destruction and the surface layer’s state parameters of various OA, primarily their defectiveness, is very important for the development of this potentially promising technology for ensuring the quality of critical products, mainly aviation and other industries. In this regard, the work proposes a probabilistic UJM model, which consists of analyzing the kinetics of the formation of an aggregate set of eroded particles, as a process caused by a combination of appropriate necessary and sufficient conditions for its implementation. The former include the topographic features of the microdefectiveness’ characteristics of the surface layer material, and the latter consist of a certain variational-force hydrodynamic effect of the diagnostic UJ on it. This approach made it possible to obtain calculated data related to probabilistic distribution of the UJ-eroded particles’ sizes of hypothetical OA, as a coordinate function describing the microdefects’ concentration in its surface layer. These functions are close to the available results of experimental UJM of typical and promising materials used in the manufacture of machinery technology.

scholarly journals Model of the omni-channel Interaction in the Web 4.0 environment

2018 ◽  
Vol 44 ◽  
pp. 00023
Author(s):  
Anna Chernikova ◽  
Sergey Krasnov ◽  
Sergey Sergeyev
Keyword(s):  
Global Markets ◽  
Entire Group ◽  
Practical Implementation ◽  
Channel Interaction ◽  
Complex Topology ◽  
Scientific Approach ◽  
On Line ◽  
Cloud Servers ◽  
The Web

The practical implementation of the concept “Industry 4.0” entirely depends on the level of coordination between businesses, organizations and the entire group of consumers. The dominating comprehension of such interaction as a net of complex topology where nodes act as objects that have an interface a surface for contacts, results in a neuro-net-concept or the Web 4.0. Within the framework of the Russian national program “National Technological Initiative”, the development of this direction is considered as one of the main priorities. The quality of implementation of the system interaction in this paradigm is greatly influenced by algorithms used in the cloud servers of the nodes included into the structure of the Web 4.0. Besides, operation of businesses in the conditions of global markets will take place in the situation of strict competition and solutions forming the basis of the software have to be based on the scientific approach with the use of the methods of optimization and mathematical models. As the competition in the commercial sphere turned into the contest between the economic efficiency of on-line platforms, this work proposes a particular implementation of the algorithm of omni-channel interaction formed on the basis of a mathematical model.

scholarly journals Enhancing the operational efficiency of quantum random number generators

2021 ◽  
Vol 13 (2) ◽  
pp. 10-18
Author(s):  
Botond L. Márton ◽  
Dóra Istenes ◽  
László Bacsárdi
Keyword(s):  
Random Number ◽  
Statistical Tests ◽  
Practical Implementation ◽  
Random Numbers ◽  
Random Number Generators ◽  
Original Source ◽  
Negative Effect ◽  
Quantum Phenomena ◽  
The Right

Random numbers are of vital importance in today’s world and used for example in many cryptographical protocols to secure the communication over the internet. The generators producing these numbers are Pseudo Random Number Generators (PRNGs) or True Random Number Generators (TRNGs). A subclass of TRNGs are the Quantum based Random Number Generators (QRNGs) whose generation processes are based on quantum phenomena. However, the achievable quality of the numbers generated from a practical implementation can differ from the theoretically possible. To ease this negative effect post-processing can be used, which contains the use of extractors. They extract as much entropy as possible from the original source and produce a new output with better properties. The quality and the different properties of a given output can be measured with the help of statistical tests. In our work we examined the effect of different extractors on two QRNG outputs and found that witg the right extractor we can improve their quality.

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