scholarly journals Cutting forces when grinding parts from martensite aging steels with highporous abrasive, borazon and diamond wheels

ScienceRise ◽  
2021 ◽  
pp. 11-16
Author(s):  
Vladimir Lebedev ◽  
Alla Bespalova ◽  
Tatiana Chumachenko ◽  
Yevhen Omelchenko ◽  
Tatiana Nikolaieva
Keyword(s):  
Cutting Force ◽  
Cutting Forces ◽  
Grinding Wheels ◽  
Engineering Technology ◽  
Maraging Steels ◽  
Processing Modes ◽  
Scope Of Application ◽  
Scientific Results ◽  
Highly Porous ◽  
Technological Product

Object of research. The article investigates the cutting forces when grinding martensitic-aging steels with highly porous grinding wheels. The problem to be solved is the regularities of the change in the magnitude of the cutting forces when grinding maraging steels with highly porous CBN wheels. Main scientific results. The studies were performed on martensiticaging steel H8K18M14. As a result of the experiments, it was found that when grinding wheels made of materials such as electrocorundum, CBN (borazon) and diamond, a significant role is played by the values of the cutting force, which increase during processing. During the experiment it was found out: the cutting forces Py and Pz in the width of the allowable modes, which are most often used in circular and flat grinding, can reach the following values: with the structure of the wheel 26 come to values from 2.714N to 30.721 and with the structure of the wheel 40 come to values from 2.49N to 28.185N. Reducing the grain size of the wheel, let’s obtain the effect of increasing the energy costs of the grinding process, by increasing the magnitude of the cutting forces. If to compare the cutting forces that occur when grinding different wheels, it is possible to note the following: in comparison with electrocorundum wheels when using wheels with KNB cutting forces are reduced by 20-25 %, and when grinding with diamond wheels, the effect of cutting forces is reduced by 25 - 30 %. When grinding with highly porous wheels, the cutting force is 15-20 % higher than when grinding with wheels of normal porosity. The area of practical use of research results-grinding technology for maraging steels. Innovative technological product – relationship between processing modes and the magnitude of cutting forces when grinding maraging steels. Scope of application of an innovative technological product-mechanical engineering technology

scholarly journals Integral estimation of activity of entrepreneurial universities: practical aspect

ScienceRise ◽  
2021 ◽  
pp. 53-59
Author(s):  
Gulshan Bayramova
Keyword(s):  
Educational Institution ◽  
The United States ◽  
Practical Aspect ◽  
Entrepreneurial University ◽  
Educational Institutions ◽  
Entrepreneurial Universities ◽  
Integral Estimation ◽  
Scope Of Application ◽  
Scientific Results ◽  
Technological Product

Investigated problem. Implementation of the concept of an entrepreneurial university necessitates the formation of a system of activity indicators of educational institutions. The main scientific results. It is specified that the activity of entrepreneurial universities and educational institutions that try to comply with this concept should be systematically rated. The author analyzes modern approaches to estimation of the activity of entrepreneurial universities. The own viewpoint to this evaluation on the basis of calculation of an integrated indicator is offered. The main stages of the algorithm for estimating the activity are described. An integrated activity indicator for five universities has been calculated. The ranking of educational institutions in accordance with the calculated desegregated measures and the concept of entrepreneurial university has been held. The results of the analysis showed that the studied educational institutions from the United States are more in line with the concept of the entrepreneurial university than European ones. The area of practical use of the research results. The practical results of the study can be used in the process of estimating the activity of entrepreneurial universities. Innovative technological product. The scientific approach to the evaluation of the activity of entrepreneurial universities proposed by the author allows to form their rating, to track the position of each educational institution in the dynamics. Scope of application of the innovative technological product: educational policy at the micro- and macroeconomic levels.

scholarly journals Analysis of tendencies in the functioning of innovative entrepreneurship in the context of technological progress

ScienceRise ◽  
2021 ◽  
pp. 31-36
Author(s):  
Eshgin Bayramov
Keyword(s):  
Technological Progress ◽  
Technological Development ◽  
Rapid Development ◽  
Global Market ◽  
Innovation Activity ◽  
Advanced Technologies ◽  
Scope Of Application ◽  
Innovative Enterprise ◽  
Scientific Results ◽  
Technological Product

The object of research is innovative entrepreneurship and the main tendencies in its operation in the world. Investigated problem. The rapid development of innovative entrepreneurship necessitates are the identification and tracking of tendencies in this area. The main scientific results. The article identifies tendencies in the functioning of entrepreneurship in the context of technological progress. The main subsystems of an innovative enterprise are characterized. The dynamics of frontier technologies market indicators in the context of innovative entrepreneurship is analyzed. It is noted that the transformation of the structure of the global market of advanced technologies is accompanied by increasing disparities in technological and financial development between countries. The inconsistency of national goals with global ones in the field of frontier technologies is pointed out. The area of practical use of the research results. The results of the study can be used by representatives of the scientific community, authorities to understand global tendencies in innovative entrepreneurship. Innovative technological product Identified global tendencies in the functioning of innovative entrepreneurship can be part of technological development strategies. Scope of application of the innovative technological product: policy of regulation of innovation activity.

scholarly journals THE USE OF NEURO-FUZZY MODELS IN EXPERT SUPPORT SYSTEMS FOR FORENSIC BUILDING-TECHNICAL EXPERTISE

ScienceRise ◽  
2020 ◽  
Vol 2 ◽  
pp. 10-18
Author(s):  
Roman Pasko ◽  
Svitlana Terenchuk
Keyword(s):  
Conceptual Modeling ◽  
Technical Condition ◽  
Technical Expertise ◽  
Fuzzy Models ◽  
Knowledge Based ◽  
Neuro Fuzzy ◽  
Scope Of Application ◽  
Scientific Results ◽  
The Impact ◽  
Technological Product

The paper is focused on solving the problem of assessing the impact of repair-building works on the technical condition of objects near which these works were or are being carried out. Particular attention is paid to the analysis of the problems that accompany the creation of expert systems for supporting forensic building-technical expertise. The main aim of the work: conceptual modeling of an expert system for supporting forensic building-technical expertise. Object of research: the process of execution of forensic building-technical expertise and expert research. Solved problem: automation of a system capable of functioning in conditions of fuzzy uncertainty caused by the non-uniformity of the logic of the process of performing forensic building-technical expertise and the ambiguity and inconsistency of the information provided for research. Main scientific results: a model of a knowledge-based system is proposed and the use of neuro-fuzzy networks is justified to solve the problem of supporting the decision to assess the impact of repair-building works on the technical condition of the object, which has become the subject of expertise. Field of practical use of research results: forensic activities in the framework of building-technical expertise to determine the possible causes of deterioration in the technical condition of structural elements of buildings and their individual premises. Innovative technological product: a support system for forensic building-technical expertise based on knowledge and neuro-fuzzy models. Scope of application of an innovative technological product: forensic and investigative practice in resolving issues requiring the use of special knowledge in assessing the impact of repair-building works on the technical condition of nearby facilities.

scholarly journals Efficiency determination of methods for eliminating the polarization layer in the process of membrane concentration of buttermilk

ScienceRise ◽  
2021 ◽  
pp. 32-38
Author(s):  
Oleksandr Omelchenko ◽  
Gregoriy Deynichenko ◽  
Vasyl Huzenko ◽  
Inna Zolotukhina ◽  
Dmytro Dmytrevskyi ◽  
...  
Keyword(s):  
Food Industry ◽  
Raw Materials ◽  
Membrane Surface ◽  
Experimental Studies ◽  
Scope Of Application ◽  
Scientific Results ◽  
Efficiency Determination ◽  
Membrane Concentration ◽  
Technological Product

The object of research: the process of membrane concentration of buttermilk using methods of removing the polarizing layer on the membrane surface. Investigated problem: determination of the effectiveness of methods for eliminating the polarization layer on the membrane surface during membrane concentration of buttermilk. Main scientific results: The results of experimental studies on methods of removing the polarization layer to increase the productivity of ultrafiltration equipment in the process of membrane concentration of buttermilk are presented. Mathematical models are proposed based on the regression equation of a factorial experiment using the elimination of the polarization layer on the membrane to determine the rational operating parameters of the membrane concentration of buttermilk. These parameters were determined: pressure – 0.4 … 0.5 MPa, buttermilk temperature – 40 … 50 °С, speed of pulsating flows – 1.5 … 1.7 m/s, frequency of bubbling of raw materials – 0 , 10 … 0.15 min-1, bubbling pressure – 0.56 … 0.58 MPa. A comparative analysis of the application of the method of vibrational mixing and bubbling of separated non-fat dairy raw materials to eliminate the formation of a polarization layer on the surface of membranes in the process of membrane concentration is presented. Based on the obtained quantitative and qualitative characteristics of the ultrafiltration products, it can be seen that vibrational mixing and bubbling of the processed buttermilk equally intensify the process of membrane concentration of buttermilk. The area of practical use of the research results: enterprises of the dairy industry of the food industry, engaged in waste-free processing of dairy raw materials and its by-products. An innovative technological product: devices for reducing the polarization layer, allowing to increase the performance of membranes in the process of membrane concentration of buttermilk. Scope of application of the innovative technological product: waste-free processing of dairy raw materials at dairies and dairy plants and other food industry enterprises.

scholarly journals Assessment of the use of different risk algorithms for osteoporotic fractures in women in the practice of a family doctor

ScienceRise ◽  
2021 ◽  
pp. 34-39
Author(s):  
Yevheniia Lukianets
Keyword(s):  
Risk Factors ◽  
Family Doctor ◽  
Osteoporotic Fractures ◽  
Social Consequences ◽  
Mineral Density ◽  
Early Menopause ◽  
Significant Difference ◽  
Scope Of Application ◽  
Scientific Results ◽  
Technological Product

Object of research: Women in whom the risk of osteoporotic fractures was assessed using the FRAX, Q-Fracture algorithms, and the risk factors for osteoporosis and their role in the development of osteoporotic fractures were studied. Investigated problem: the use of various algorithms in the practice of a family doctor to assess the 10-year risk of osteoporotic fractures. Main scientific results: A decrease in bone mineral density was found in 51.4 % of the surveyed women, of whom osteopenia was in 48.7 %, osteoporosis in 2.9 % of women. The risk of fractures according to all algorithms was higher in women of the age group 70–79 years: FRAX Total – 8.87±3.2, FRAX Hip – 4.03±3.1, Q fracture total – 12.87±1.5, Q fracture Hip – 7.97±2.7, FRAX Total without BMD – 11.9±5.5, FRAX Hip without BMD – 6.3±4.8. Age correlates negatively with the T score (r=–0.47, p=0.007) and positively with the FRAX Total algorithms without BMD (r=–0.47, p=0.003), FRAX Hip without BMD (r=0.78, p=0.006), Q fracture total (r=0.86, p=0.007), Q fracture Hip (r=0.92, p=0.008), FRAX Hip with BMD (r=0.55, p=0.009). No statistically significant difference was found with FRAX Total with BMD (r=0.21, p=0.345). Risk factors: 14.3 % of women had fractures of various localization; fractures in parents were noted by 37.1 % of respondents; a decrease in height by 3 cm during life occurred in 13.3 %. Early menopause (up to 45 years old) occurred in 11.4 % of women. Physical activity less than 30 minutes a day was noted by 68.6 %. The area of practical use of the research results: the primary level of medical care. Innovative technological product: early identification of risk factors for osteoporosis and calculation of the risk of fractures will reduce the medical and social consequences of complications in osteoporosis. Scope of application of the innovative technological product: in the clinical practice of general practitioners.

scholarly journals Influence of structural descriptions of underbody of bicarbonate columns on duration of period of their operation and ecologization of process

ScienceRise ◽  
2021 ◽  
pp. 3-11
Author(s):  
Mykola Porokhnia ◽  
Oleksii Shestopalov ◽  
Svitlana Bukhkalo ◽  
Tetiana Novozhylova
Keyword(s):  
Sodium Bicarbonate ◽  
Liquid Waste ◽  
Design Features ◽  
Environmental Friendliness ◽  
Existing Problems ◽  
Discharge Unit ◽  
Scope Of Application ◽  
Pharmaceutical Industries ◽  
Scientific Results ◽  
Technological Product

Object of research: optimization of the operation period of bicarbonate columns by optimizing their design features. Investigated problem: increasing the efficiency, environmental friendliness and duration of the bicarbonate columns by optimizing the design of the sludge discharge unit. Main scientific results: the article analyzes the main design features of bicarbonate columns for the production of purified sodium bicarbonate. A relationship has been established between the design of the apparatus, the intensity of mixing and the duration of the apparatus operation without stopping for washing. On the basis of the existing problems, laboratory and industrial experiments were carried out at one of the soda plants, aimed at increasing the efficiency of operation of the bicarbonate columns of the purified sodium bicarbonate shop. So, due to the modernization of the design of the sludge unloading unit and the identification of the optimal amount and month of the location of the mesh trays, an increase of 1.5-2 times in the duration of operation of the columns without stopping for washing was achieved. This contributed to an increase in plant productivity and environmental friendliness of the process due to a decrease in the amount of liquid waste generated during the washing of the column equipment. Area of practical use of the research results: enterprises for the production of purified sodium bicarbonate of food and pharmaceutical quality. Innovative technological product: design solutions for bicarbonate columns and the technology of carbonization of soda-bicarbonate solution for the production of purified sodium bicarbonate. Scope of application of the innovative technological product: soda production, food and pharmaceutical industries.

scholarly journals Shifting the operating frequency of the piezoceramic electroacoustic transducer langevin type using passive cooling methods

ScienceRise ◽  
2021 ◽  
pp. 3-10
Author(s):  
Liudmyla Perchevska ◽  
Oleksandr Drozdenko ◽  
Kateryna Drozdenko
Keyword(s):  
Resonant Frequency ◽  
Heating Temperature ◽  
Passive Cooling ◽  
Back Plate ◽  
Electroacoustic Transducer ◽  
Product Scope ◽  
Scope Of Application ◽  
Scientific Results ◽  
Type Transducer ◽  
Technological Product

The object of research: the shift of resonant frequency of the piezoceramic electroacoustic transducer Langevin type depending on the shape of the back plate. Investigated problem: the relationship between changes in shape of back plate of the Langevin type transducer with the resonant frequency of the oscillating system.  Search quantitative contribution to shift the resonant frequency of each of the modifications: shape, diameter, thickness, weight of back plate. The main scientific results: vibration modes of a transducer with a back plate with horizontal and vertical radiator ribs were obtained. The graphs of the shift resonant frequency depending on the change in the diameter and thickness of the back tail with vertical radiator ribs are presented. It is established, that the change in the thickness and diameter of the back plate of the transducer effects on resonance frequency much less than the change in mass. The area of practical use of the research results: designing piezoceramic electroacoustic transducer with passive cooling method. Innovative technological product: guidelines for choosing the shape changes back plates of the Langevin type transducer for decreasing heating temperature, with keeping resonant frequency. Scope of the innovative technological product: scope of application of the Langevin type transducer: underwater acoustics, ultrasonic technological equipment, ultrasonic engine, piezotransformer, medical equipment, rock drilling devices.

scholarly journals METHODS OF QUALITY CONTROL OF PHONOGRAMS DURING RESTORATION AND RECOVERY

ScienceRise ◽  
2021 ◽  
pp. 22-32
Author(s):  
Alex Grebin ◽  
Ninel Levenets ◽  
Volodymyr Shvaichenko
Keyword(s):  
Quality Control ◽  
Objective Assessment ◽  
Research Process ◽  
Parametric Modeling ◽  
Instrumental Method ◽  
Measuring Instruments ◽  
Scope Of Application ◽  
Scientific Results ◽  
Technological Product

The object of research. Process of phonograms restoration and recovery are described. Investigated problem. Differences between some methods of quality control of phonograms during and after their restoration and recovery were investigated. The main scientific results. An instrumental method for objective assessment of the quality of phonograms is proposed, based on a non-intrusive model with parametric modeling of the phonogram signal to assess the effect of an artifact on a phonogram. The area of practical use of the research results. The results of the operational control of objective quality indicators of a real sound signal using virtual measuring instruments built into the software for working with sound are considered. An innovative technological product: a technology for assessing the quality of phonograms in the process of restoration and recovery (R&R), which makes it possible to objectively assess the quality of phonograms, taking into account artifacts of phonograms caused by the method of recording phonograms, the conditions of their storage, etc. enough high quality restored audio content. Scope of application of the innovative technological product: studio of restoration and recovery of sound phonograms on analog media, recording studios, technological processes of conversion and processing of sound programs, archives of radio and television recordings.

scholarly journals FORECASTING OF FORMATION OF PHARMACEUTICAL GLASS WASTE TAKING INTO ACCOUNT THE COVID-19 DATABASE

ScienceRise ◽  
2020 ◽  
Vol 4 ◽  
pp. 46-52
Author(s):  
Antonina Baranova ◽  
Nataliia Samoilenko ◽  
Inna Pitak
Keyword(s):  
Waste Disposal ◽  
Business Models ◽  
Research Problem ◽  
Environmental Safety ◽  
Glass Waste ◽  
Pharmaceutical Waste ◽  
Epidemic Period ◽  
Scope Of Application ◽  
Scientific Results ◽  
Technological Product

Subject of research: forecasting the formation of pharmaceutical glass waste in medical institutions, taking into account the peculiarities of the use of medicines during the COVID-19 epidemic in Ukraine. Research problem: Predicting the formation and accumulation of pharmaceutical glass waste in hospitals in order to implement effective environmental management and determine the resource possibilities for further waste disposal. Main scientific results: A model has been developed that can be used to predict the generation of pharmaceutical waste from glass in hospitals in the country during an epidemic, as well as in the presence of the necessary input data in a non-epidemic period. Based on regression analysis and using the Minitab-19 software, the dependences of the volume of pharmaceutical waste from glass on three variable factors were determined. Using statistical data on the incidence of COVID-19 in Ukraine, using the developed model, the PGW volume in the Volyn region for a given period of time was calculated. The scope of practical application of the research results: planning of measures to improve the environmental safety of handling pharmaceutical glass waste; development of business models for the disposal of this waste. An innovative technological product: the predictive model helps to identify the resource possibilities of using pharmaceutical glass waste for industrial waste disposal. Scope of application of the innovative technological product: medical waste management, industrial disposal of pharmaceutical glass waste.

Cutting Temperature and Cutting Forces Investigation Based on the Taguchi Design Method when High-Speed Milling of Titanium Matrix Composites with PCD Tool

2016 ◽  
Vol 836-837 ◽  
pp. 168-174 ◽  
Author(s):  
Ying Fei Ge ◽  
Hai Xiang Huan ◽  
Jiu Hua Xu
Keyword(s):  
Cutting Force ◽  
Feed Rate ◽  
Cutting Forces ◽  
High Speed ◽  
Volume Fraction ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Depth Of Cut ◽  
High Speed Milling ◽  
Radial Depth

High-speed milling tests were performed on vol. (5%-8%) TiCp/TC4 composite in the speed range of 50-250 m/min using PCD tools to nvestigate the cutting temperature and the cutting forces. The results showed that radial depth of cut and cutting speed were the two significant influences that affected the cutting forces based on the Taguchi prediction. Increasing radial depth of cut and feed rate will increase the cutting force while increasing cutting speed will decrease the cutting force. Cutting force increased less than 5% when the reinforcement volume fraction in the composites increased from 0% to 8%. Radial depth of cut was the only significant influence factor on the cutting temperature. Cutting temperature increased with the increasing radial depth of cut, feed rate or cutting speed. The cutting temperature for the titanium composites was 40-90 °C higher than that for the TC4 matrix. However, the cutting temperature decreased by 4% when the reinforcement's volume fraction increased from 5% to 8%.

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