scholarly journals SUBSTANTIATION OF THE PARAMETERS OF TILLAGE RINK

2017 ◽  
Vol 2 (3) ◽  
pp. 24-28
Author(s):  
Иван Шаронов ◽  
Ivan Sharonov ◽  
Владимир Курдюмов ◽  
Vladimir Kurdyumov ◽  
Виктор Курушин ◽  
...  
Keyword(s):  
Moisture Content ◽  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
Soil Tillage ◽  
Content Structure ◽  
Technical Requirements ◽  
Winter Crops ◽  
Crops Yield ◽  
Specific Metal

The purpose of research is improving the quality of surface tillage during sowing of winter crops and, as a result, crops yield increasing. Quality compacting soil tillage rinks affect its physical and mechanical properties, such as moisture content, structure, and density, optimum value of which is regulated agronomic requirements for cultivation of specific agricultural crops. These properties affect the quality of seeding and water-air regime of the soil. Therefore, when conducting experimental studies, moisture content, structure, and soil density was controlled to optimize parameters and modes of operation of the rink to bring the above soil properties in compliance with agro-technical requirements. The quality of soil the proposed rink was assessed in comparison with existing rinks. The criterion of quality was the factor of conformity to the standard kcs, which characterizes the compliance of the density and structure of the soil reference values established by the agrotechnical requirements. The result of the research revealed that the maximum value of kcs = 0.84 is achieved at a speed ofv = 11 km/h and the ballast mass m = 78 kg. After tillage rinks seeder the factor of conformity to the standard kcs = 0.68; after soil tillage the existing rink kcs = 0.71; and after the processing of the proposed soil-cultivating rink the factor of conformity to the standard amounted to kcs = 0.84, which is significantly higher than after soil tillage of existing rink. While the specific metal content of the proposed ice rink will not exceed 116 kg per 1 m of width, which is 2.4 times less than that of the rink 3CCH-6 (283.6 kg/m).

scholarly journals ENGINEERING MANAGEMENT OF MACHINE FOR FORMATION OF ARTIFICIAL SHELL ON SEED VEGETABLE CULTURES

2020 ◽  
Vol 61 (2) ◽  
pp. 165-174 ◽  
Author(s):  
I.L. Rogovskii ◽  
L.L. Titova ◽  
V.I. Trokhaniak ◽  
L.I. Marinina ◽  
O.T. Lavrinenko ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
Experimental Tests ◽  
Dynamic Mode ◽  
Seed Coating ◽  
Experimental Sample ◽  
Sowing Time ◽  
Seed Material ◽  
Internal Friction Coefficient

The article analyses the universalization of the seed material by its physical and mechanical properties by means of pre-sowing treatment, resulting in the formation of an artificial shell. As a result of the generalization, a technological scheme of obtaining an encapsulated seed and a design of a seed coating machine was proposed. A simulation model of the sowing accuracy process from the internal friction coefficient of seeds at different root mean square deviations of seed sizes is proposed. The regression equation for the influence of the dynamic mode of operation of the developed experimental sample of seed coating machine is established. According to the experimental studies’ results, the static and dynamic friction coefficients of the encapsulated vegetable seeds on the steel and plastic working surfaces of seed coating machine were established. Under the production conditions, experimental tests were conducted to compare the seedlings of untreated, coated, branded and encapsulated seeds of vegetables by the quality of prepared seed material and sowing time.

scholarly journals Through-silicon-via formation of 3D electronic modules by laser radiation

Doklady BGUIR ◽  
2021 ◽  
Vol 19 (3) ◽  
pp. 58-65
Author(s):  
V. L. Lanin ◽  
V. T Pham ◽  
A. I. Lappo
Keyword(s):  
Laser Radiation ◽  
Local Heating ◽  
Laser System ◽  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
Laser Wavelength ◽  
Comsol Multiphysics ◽  
Through Silicon Via ◽  
Technical Requirements ◽  
High Specific Energy

Laser  heating  is  a  promising  method  for  through-silicon-via  (TSV)  formation  in  assembling  highdensity 3D electronic modules due to its high specific energy and local heating ability. Using laser radiation for the formation of TSV makes it possible to reduce its diameter, indirectly increases the density of elements in 3D electrical  modules.  Laser  system  selection  depends  on  the  physical  and  mechanical  properties  of  the processed materials and on the technical requirements for laserprocessing. The reflectivity of most materials increases with the laser wavelength. It was found that with an increase in the initial temperature of the substrate, the  TSV  taper  becomes  larger.  Simulation  was  performed  in  COMSOL  Multiphysics 5.6  to  conduct  thermal distribution during TSV laser formation. By modeling thermal fields in the COMSOL Multiphysics 5.6 software for  laser  processing  of  silicon  substrates  and  experimental  studies,  the  parameters  of  laser  radiation  have been optimized  to  obtain  a  minimum  hole  taper  coefficient  in  the  substrates  of  3D  electronic  modules. The optimal  duration of  exposure  to  laser radiation  with a  wavelength of 10.64 microns  is  less  than  2 s with holes taper 0.1–0.2.

scholarly journals SIFAT FISIK DAN MEKANIK PAPAN PARTIKEL BERDASARKAN KOMPOSISI LIMBAH KULIT BUAH PINANG DAN LIMBAH KAYU GERGAJIAN DENGAN VARIASI KADAR PEREKAT

2021 ◽  
Vol 9 (2) ◽  
pp. 207
Author(s):  
Asmawati Wurya Sari ◽  
M Dirhamsyah ◽  
Yuliati Indrayani
Keyword(s):  
Mechanical Properties ◽  
Moisture Content ◽  
Water Absorption ◽  
Raw Materials ◽  
Urea Formaldehyde ◽  
Physical And Mechanical Properties ◽  
Betel Nut ◽  
Particle Board ◽  
Composition Ratio

This research aimed to analyze the physical and mechanical properties of particleboard based on the composition of raw materials and adhesive content as well as their interaction with the optimum quality of particle boards that meet JIS A 5908-2003 standards. The particleboard was made with a size of 30 cm x 30 cm x 1 cm with a target density of 0.7 g/cm³.  The pressing was done at a temperature of 140°C for 8 minutes with a pressure of 25 kg/cm². The composition ratio of betel nut peel waste and sawdust varied, namely 60% betel nut peel waste: 40% sawdust, 50% betel nut peel waste: 50% sawdust, and 40% betel nut peel waste: sawdust 60%. The adhesive used was Urea Formaldehyde with a concentration of 12%, 14%, and 16%. The results showed that all test values met the JIS A 5908: 2003 standard except the MOE test. The optimum value of particle board of betel nut peel and sawdust was with a composition ratio of 50% betel nut peel waste: 50% sawdust, 16% adhesive content, with a density value of 0.6876 g/cm³, a moisture content of 9,4530%, water absorption 34,5306%, thickness expansion 8,2508%, MOE 12432,6243 kg/cm², MOR 205,8462 kg/cm², adhesive firmness 2,2530 kg/cm², screw holding strength 81,6861 kg/cm².Keywords: adhesive content, betel nut peel waste, material composition, mechanical properties, particleboard, physical.Abstrak Penelitian ini bertujuan untuk menganalisis sifat fisik dan mekanik papan partikel berdasarkan komposisi bahan baku dan kadar perekat serta interaksi keduanya terhadap kualitas papan partikel yang optimum serta memenuhi standar JIS A 5908-2003. Papan partikel dibuat dengan ukuran 30 cm x 30 cm x 1 cm dengan target kerapatan 0,7 g/cm³. Pengepresan  pada suhu 140°C selama 8 menit dengan tekanan 25 kg/cm². Perbandingan komposisi kulit buah pinang dan serbuk kayu gergaji bervariasi yaitu kulit buah pinang 60% : serbuk kayu gergaji 40%, kulit buah pinang 50% : serbuk kayu gergaji 50% dan kulit buah pinang 40% : serbuk kayu gergaji 60%. Perekat yang digunakan adalah Urea Formaldehida dengan konsentrasi 12%, 14% dan 16%. Hasil penelitian menunjukkan semua nilai uji memenuhi standar JIS A 5908 : 2003 kecuali uji MOE. Nilai papan partikel kulit buah pinang dan serbuk kayu gergaji optimum dengan perbandingan komposisi kulit buah pinang 50% : serbuk kayu gergaji 50%, kadar perekat 16%, dengan nilai densitas 0,6876 g/cm³, kadar air 9,4530%, daya serap air 34,5306%, pengembangan tebal 8,2508%, MOE 12432,6243 kg/cm², MOR 205,8462 kg/cm², Keteguhan rekat 2,2530 kg/cm², kekuatan menahan sekrup 81,6861 kg/cm².Kata kunci : papan partikel, kadar perekat, kulit buah pinang, komposisi bahan, sifat fisik dan mekanik.

scholarly journals RESULTS OF RESEARCH OF CYLINDER-SPIRAL SOIL-TILLING ROLLER

2018 ◽  
Vol 13 (4) ◽  
pp. 135-139
Author(s):  
Иван Шаронов ◽  
Ivan Sharonov ◽  
Владимир Курдюмов ◽  
Vladimir Kurdyumov ◽  
Вячеслав Прошкин ◽  
...  
Keyword(s):  
Spring Barley ◽  
Economic Effect ◽  
Experimental Studies ◽  
Field Studies ◽  
Soil Tillage ◽  
Embedment Depth ◽  
Soil Density ◽  
Surface Alignment ◽  
Cylindrical Spiral

The cylindrical soil tillage roller was developed. In the process of experimental studies of the proposed roller for assessing the quality of tillage from the standpoint of compliance with the soil density agrotechnical requirements adopted coefficient of compliance with the standard kse. As a result of experimental studies, the parameters and modes of operation of the roller have been optimized, at which the required quality of tillage is achieved. Analysis of the mathematical models obtained showed that, after rolling with a cylindrical spiral roller, kse = 0.98 (corresponding to soil density ρ = 1185 ... 1215 kg / m3), which fully satisfies the agrotechnically specified limit of soil density at a seed embedment depth - 1100 ... 1300 kg / m3. The maximum value of kse = 0.98 is achieved when the speed of the unit is v = 11 km per hour, the ballast mass is mb=100 kg, and the turn of the spiral is l=40 mm. It was revealed that after treatment with a cylindrical-spiral soil-cultivating roller, the coefficient of compliance with the standard was kse=0.98, which is significantly higher compared to serial rollers (0.83 - after rolling the SZ-5.4 drill and 0.91 after processing the ring spur roller). When assessing the field surface alignment, it was found that after treatment with a cylindrical-spiral roller, the coefficient of uniformity kv was 0.95, which is respectively 7.1% and 14.2% more compared to the areas treated with annular-heel rollers and annular rollers of the SZ seeder -5.4. In the course of field studies on the experimental field of Ulyanovsk State Agrarian University, it was found that the yield of spring barley after surface treatment of the soil with a cylindrical-spiral roller exceeded by an average of three years for 7.4% and 10.3%, respectively, the yield of this crop after rolling with a KKSh-6 roller and SZ-5,4 seeder wheels. The economic effect of the introduction of the proposed rink due to the increase in yield reaches 1,800 ... 2,460 rubles per 1 hectare of spring barley.

scholarly journals Influence of UV Radiation on Physical and Biological Properties of Rapeseed in Pre-Sowing Treatment

2021 ◽  
Vol 10 (4) ◽  
pp. 217-223
Author(s):  
Semenov Anatolii ◽  
Sakhno Tamara ◽  
Semenova Kateryna
Keyword(s):  
Moisture Content ◽  
Water Absorption ◽  
Uv Radiation ◽  
Uv Irradiation ◽  
Experimental Studies ◽  
Biological Properties ◽  
Low Doses ◽  
Seed Vigour ◽  
Positive Effect

The effect of ultraviolet radiation on pre-sowing treatment of seeds of the winter cultivar Lembke and cultivars treated with fungicides DK EXODUS, DK Exquisite and DK Exprit was studied. Experimental studies show a positive effect of UV irradiation in pre-sowing treatment of winter rapeseeds on seed vigour and germination, both when irradiated in region C (200-280 nm) and in region B (280-320 nm). It was found that UV radiation has a positive effect on the sowing qualities of winter rapeseeds varieties Lembke and DK EXODUS (treated with fungicides) when irradiated with a dose of 120 J/m2 : seed vigour increased by 11% in the variety DK EXODUS and 16.9% in the variety Lembke, germination on average by 13% compared to control samples. At doses of 250 and 500 J/m2 , a decrease in the sowing quality of seeds is observed. The main parameters of kinetic values of hydration were determined: moisture content and hydration rate. It was found that the rate of hydration increased sharply in the initial phase and gradually and slowly decreased in the middle and final phases of the hydration procedure, respectively, in order to achieve a saturated moisture content. Irradiated seeds at a dose of 120 J/m2 showed a higher rate of water absorption than the control, both in the early and later stages of the hydration procedure. It is established that UV-C irradiation changes the kinetics of water absorption by B. napus seeds at low doses of irradiation, causing faster penetration of water into the seeds and more efficient hydration of tissues, positively affecting sowing qualities and biometrics. It has been suggested that water uptake by UV-irradiated B. napus seeds causes excessive imbibition damage at higher doses of UV radiation, as the germination potential decreases and improves at low doses. No significant changes in biometric parameters were detected during UV irradiation of rapeseed varieties DK Exquisite and DK Exprit treated with fungicides and dyes.

Experimental Studies of the Physical and Mechanical Properties of Glued Building Materials Based on Modified Veneer

2021 ◽  
Vol 410 ◽  
pp. 817-822
Author(s):  
Ruslan R. Khasanshin ◽  
Ruslan R. Safin ◽  
Shamil R. Mukhametzyanov
Keyword(s):  
Building Materials ◽  
Structural Characteristics ◽  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
Adhesive Interaction ◽  
Entire Volume ◽  
Timber Products ◽  
Ultraviolet Treatment ◽  
Birch Veneer

Today, glued timber products occupy a significant place in the volume of finished products of modern construction and woodworking enterprises. Plywood is one such product. The durability and structural characteristics of plywood depend on the quality of binder, the type of wood and the quality of veneer. The paper explores the technology of ultraviolet treatment of thermally modified birch veneer with subsequent production of waterproof plywood. The results of a study on the influence of the operating parameters of veneer modification on the complex of sorption and strength characteristics of plywood materials are presented. It is established that the combination of thermal modification of wood throughout the entire volume with surface treatment with ultraviolet radiation allows creating glued wood material with increased water resistance and high-quality adhesive interaction.

scholarly journals Convectiv drying of disperesd materials before the thermochemical processing

2019 ◽  
Vol 21 (5) ◽  
pp. 29-37
Author(s):  
N. F. Timerbaev ◽  
R. G. Safin ◽  
D. F. Ziatdinova ◽  
T. O. Stepanova
Keyword(s):  
Moisture Content ◽  
Raw Materials ◽  
Experimental Studies ◽  
High Energy ◽  
Convective Drying ◽  
Gaseous State ◽  
Wood Processing ◽  
Temperature And Humidity ◽  
Thermochemical Processing

Drying of wood materials is one of the most important processes not only of wood processing, but also of many other industries. Drying processes involve the removal of moisture as a result of a phase transition from a liquid or solid to a gaseous state. This is due to the high energy intensity and duration of the process, especially for colloidal materials. The latter is due to the fact that with intensive drying the quality of the finished product often decreases, for example, when drying lumber cracks and warps occur, which is unacceptable in the manufacture of thermally modified products. In cases of thermochemical processing of dispersed materials, the quality of raw materials is determined only by the final moisture content of dispersed materials.Questions of heat and mass transfer during the drying of materials were carried out by Girsh M., Lykov A.V., Lurye M.V., Sazhin B.S., Dolinsky A.A., Golubev L.G., Rudobashta S.P., Shubin G.S., Romankov PG, Ginzburg A.S., Mikhailov N.V., Mushtayev VI. and etc. The paper deals with convective technology of dispersive materials. The zone of convective drying of dispersed materials is presented. Experimental and mathematical modeling of the drying process of wet dispersed materials before thermochemical processing was carried out. The results of theoretical and experimental studies of changes in temperature and humidity in the drying bin are presented. The nature of changes in temperature and humidity of dispersed particles in a drying bin was determined. The effective height of the layer in the counter-current dryer is determined by calculation, depending on the moisture content of the fuel and the temperature of the exhaust flue gases.

Research of quality of production of the key connections basic units

2020 ◽  
pp. 106-112
Author(s):  
Anatoliy T. Lebedev ◽  
Roman V. Pavlyuk ◽  
Anton V. Zakharin ◽  
Pavel A. Lebedev ◽  
Nikolay A. Mar’in
Keyword(s):  
Quality Control ◽  
Normal Distribution ◽  
Stress Concentrator ◽  
Experimental Studies ◽  
Research Purpose ◽  
Contact Method ◽  
Technical Requirements ◽  
The Law

When considering the work of key connections with broken geometry of the working surfaces of the units, we can observe that often the key is not properly fixed in the groove of the shaft and sleeve and when rotating the coupling, it skews and perceives the transmitted torque unevenly at some point, which is a stress concentrator. (Research purpose) The research purpose is to increase the durability of keyways by preventing failures through quality control of the manufacture of their basic units. (Materials and methods) Authors have noted that the standard keyway has three fitments: "shaft-hub", "shaft-keyway" and "hub-keyway". It was shown that in these couplings the manufacturer provided gaps of various sizes for the convenience of disassembly and assembly of the connection, directly affecting the performance and durability of the connection as a whole. The geometric dimensions of keyway coupling were monitored by contact method using electronic micrometers MCC-25, MCC-50 and MCC-75 to measure the width of the keys and the diameter of the shafts and indicator nutromers NI-18 and NI-50 with an indicator head 1IG for keyways and internal diameters of pulleys. (Results and discussion) It has been revealed that the dispersion of the tolerance fields of the key width coincides with the law of normal distribution. It was found the presence of defects in width in the supplied keys, the value of which reached 15 percent. It was determined that the technical requirements for hardness and roughness corresponded to GOST 23360-78. It was noticed when checking the diametrical dimensions of the coupling "shaft-sleeve" the presence of deviations from the technical conditions, which during assembly can lead to the formation of a large gap in the keyway coupling. (Conclusions) Performed theoretical and experimental studies have allowed to establish the probability of obtaining gaps and tightness in common key coupling.

An Analysis of On-Bord High-Voltage Converters of Single-Phase Alternating Current with Increased Miroelectric Power Factor

2020 ◽  
Vol 10 (10) ◽  
pp. 44-51
Author(s):  
Yury Yu. SKOROKHOD ◽  
◽  
Sehgey I. VOL’SKIY ◽  
Keyword(s):  
High Voltage ◽  
Single Phase ◽  
Input Current ◽  
Voltage Converter ◽  
Input Unit ◽  
Power Circuit ◽  
Electrical Systems ◽  
Static Converters ◽  
Technical Requirements

The power circuit arrangements of on-board high-voltage static converters fed from a 3000 V AC single-phase network that in the general case produce multi-channel AC and DC output voltages are considered. The basic technical requirements posed to such converters are formulated. The general structural diagram of high-voltage converters with improved electric power consumption quality is given. Possible power circuit arrangements for the high-voltage converter input unit based on single-phase input current correction devices are considered. A classification and criteria for comparative evaluation of the possible power circuit arrangements of these devices are proposed. The information presented in the article will be of interest for specialists engaged in designing on-board electrical systems involving high-voltage converters that must comply with strict requirements for the quality of consumed single-phase input current.

Sign in / Sign up

Export Citation Format

Share Document