scholarly journals ДОСЛІДЖЕННЯ ПРОЦЕСУ ДУБЛЮВАННЯ ДЕТАЛЕЙ ОДЯГУ ІЗ ШТУЧНОГО ХУТРА

2021 ◽  
Vol 146 (3) ◽  
pp. 129-138
Author(s):  
А. П. Бусько ◽  
А. Т. Арабулі
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Mathematical Models ◽  
Materials Science ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Design Stage ◽  
Technological Parameters ◽  
Systematic Analysis

Analysis of the features of the structure of faux fur of different raw materials to improve the shape stability of products and increase the exploitation process. Determination of technological parameters of the process of duplication of garments made of faux fur at which a standardized level of quality of the duplication operation is duplicated.Performing experimental investigation to determine the physical and mechanical properties of artificial fur. The work used the well-known methods for determining the flexural stiffness, air permeability and hydrophobicity of artificial fur were used in the work. Theoretical and experimental investigation is based on the basic principles of textile materials science. Systematic analysis and generalization were used to determine the state of the question and set the task. The experiment of the process of duplication of faux fur parts was planned and two-factor mathematical models were obtained, which are adequate to the researched process. The influence of the duplication process on artificial fur of different raw material composition is analyzed. The values of indicators of physical and mechanical properties of modern faux fur are determined. On the basis of two-factor mathematical models, recommendations are given on the choice of technological parameters of duplication of garments made of faux fur. The regularities of the process of duplicated of garment parts made of faux fur with adhesive gasket material under static loading are established. The values of indicators of physical and mechanical properties of modern faux fur are determined. The obtained scientific results allow at the design stage to rationally select faux fur in the manufacture of outerwear, and certain rational technological parameters of the process of duplication of garments from faux fur allow to ensure a standardized level of quality of duplication operation while minimizing energy losses of equipment.

scholarly journals PENGARUH PENAMBAHAN PASIR PADA ENDAPAN LUMPUR DANAU LIMBOTO SEBAGAI PEMBUATAN BATU BATA

2018 ◽  
Vol 1 (2) ◽  
pp. 8
Author(s):  
Ilyas Ichsan
Keyword(s):  
Mechanical Properties ◽  
Quantitative Research ◽  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Sand Mixture ◽  
The Right ◽  
Lake Sludge

Research on the use of limboto lake sludge as raw material for bricks by adding sand as a mixture of materials using experimental quantitative research. In the study used limboto lake silt with sand mixture with variations of2%, 5%, 7%, 10% and 15%. Related variables are physical and mechanical properties of bricks. The controlling variable is the materials used.The results showed that bricks with raw material from limboto lake sludge with a mixture of sand with variations of 2%,5%, 7%, 10% and 15% did not produce the right composition to have the same quality of bricks with bricks using raw materials clay. Penelitian pemanfaatan endapan lumpur danau limboto sebagai bahan baku batu bata dengan penambahan pasir sebagai bahan campurnya menggunakan penalitian kuantitatif yang bersifat eksperimen. Dalam penelitian digunakan bahan endapan lumpur danau limboto dengan campuran pasir dengan variasi 2%, 5%, 7%, 10% dan 15%. Variabel terkait berupa sifat fisik dan mekanik batu  bata. Variabel pengendali adalah bahan-bahan yang digunakan. Hasil penelitian menunjukan bahwa batu bata dengan bahan baku endapan lumpur danau limboto dengan campuran pasir dengan variasi 2%, 5%, 7% 10% dan 15% tidak  menghasilkan komposisi yang tepat untuk memiliki kualitas batu bata yang sama dengan batu bata yang menggunakan bahan baku tanah liat.

scholarly journals ДОСЛІДЖЕННЯ ЕНЕРГОВИТРАТ ТАРІЛЧАСТИХ ЖИВИЛЬНИКІВ ДЛЯ СИПКИХ МАТЕРІАЛІВ

2021 ◽  
Vol 148 (4) ◽  
pp. 67-76
Author(s):  
О. П. Бурмістенков ◽  
Т. Я. Біла ◽  
В. В. Стаценко
Keyword(s):  
Mechanical Properties ◽  
Mathematical Models ◽  
Rotation Speed ◽  
Bulk Material ◽  
Physical And Mechanical Properties ◽  
Technological Parameters ◽  
Plate Rotation ◽  
Plate Feeder ◽  
The Relationship ◽  
Continuous Plate

Creation  of  mathematical  models  that  allow  determining  the  relationship  between  the design and technological parameters of the plate feeders and the energy consumption arising during their operation. Methodology.  The  work  uses  the  classical  mechanics  principles,  the  contact  interaction  of  solids theory and the mathematical modeling method. Findings.  The  paper  considers  the  design  and  operation  principle  of  a  continuous  plate  feeder, defines its main design and technological parameters. The factors that create mechanical loads on the drive of  the  feeder  plate  are  investigated.  Mathematical  models  have  been  developed  that  make  it  possible  to determine the moments of resistance and the power consumed by an electric motor during the equipment operation. The proposed models make it possible to determine the load on the drive in static and dynamic operation modes and take into account the design, technological parameters of the equipment and the bulk material physical and mechanical properties. The study results of the friction coefficients influence, the knife position and the force of its pressing on the plate surface, the plate rotation speed on the loads acting on the electric drive are presented. It has been found that the drive calculation is expedient for the mode in which the distance between the knife edge and the rotation axis of the plate is maximum, which corresponds to the operation at maximum load. It has been determined that a change in the feeder technological parameters (plate rotation speed, knife position) can lead to a change in the load on the electric drive by 86%, which must be taken into account when choosing a drive. Originality.  Mathematical  models  of  the  continuous  plate  feeder  operation  have  been  developed, which make it possible to determine the relationship between the design and technological parameters of the plate feeders and energy consumption. Practical value. The results obtained make it possible to determine the load on the plate drive by the known design, technological parameters and bulk material physical and mechanical properties.

SIFAT FISIS DAN MEKANIS ANYAMAN BAMBAN (Donax canniformis) DENGAN BAHAN STABILISATOR PEG 1000 DAN TANIN KULIT AKASIA

2014 ◽  
Vol 7 (2) ◽  
pp. 23
Author(s):  
Dwi Harsono
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Biological Resources

Bamban (Donax canniformis) is one of the biological resources that grow in the swampy areas and has been used by the community as a raw material in the form of woven handicrafts. Bamban bark that used as raw material woven texture is hard and the surface was very slippery so hard to make. This study was conducted to determine the nature of the characteristics of stem Bamban and determine the effectiveness of the stabilizers PEG 1000 and tannin from extract acacia bark in improving the quality of physical and mechanical properties strands of Bamban. Treatments include immersion with PEG 1000 and acacia bark tannins for 2 hours. Results of the study the effectiveness of treatments of soaking the material stabilizers PEG 1000 and tannins from extract acacia bark all of them can improve the physical and mechanical properties of raw material of Bamban woven handicraft and make it easier for artisans in the process of weaving due to the treated material can make more limp strands of Bamban and not to stiff, in addition to making the product brighter and more attractive.Keywords : bamban, physical properties , mechanical  properties

scholarly journals Some Properties of Eastern Red Cedar (Juniperus Virginiana L.) Particleboard Panels Made Using Modified Starch as Binder

2020 ◽  
Vol 71 (4) ◽  
pp. 371-377
Author(s):  
Onur Ulker ◽  
Salim Hiziroglu
Keyword(s):  
Mechanical Properties ◽  
Physical And Mechanical Properties ◽  
Raw Material ◽  
Modulus Of Rupture ◽  
Juniperus Virginiana ◽  
Modified Starch ◽  
Thickness Swelling ◽  
Eastern Red Cedar ◽  
Red Cedar

The objective of this study was to evaluate physical and mechanical properties of experimental panels manufactured from eastern red cedar (Juniperus virginiana L.) using modified starch as binder. Modulus of elasticity (MOE), modulus of rupture (MOR), internal bond strength (IB), hardness and dimensional stability in the form of thickness swelling and water absorption in addition to surface quality of the samples were tested. Panels were manufactured at three density levels, which are 0.60 g/cm3, 0.70 g/cm3 and 0.80 g/cm3. The highest MOE, MOR and IB values for the samples having 0.80 g/cm3 density were determined as 2207.16 MPa, 15.17 MPa and 0.87 MPa, respectively. Thickness swelling values of the samples soaked in water for 2 h ranged from 15.38 % to 23.23 %. Micrographs taken on the samples using scanning electron microscope revealed that starch was uniformly distributed within the particles. Based on the findings in this study, it appears that eastern red cedar would have a potential as a raw material to manufacture particleboard panel using modifi ed starch as green adhesive with accepted physical and mechanical properties.

scholarly journals THEORETICAL RESEARCH OF THE SCAFFOLDER AND SOIL INTERACTION

2017 ◽  
Vol 2 (3) ◽  
pp. 19-23
Author(s):  
Михаил Канаев ◽  
Mikhail Kanaev ◽  
Олег Карпов ◽  
Oleg Karpov ◽  
Сергей Васильев ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Humus Horizon ◽  
Physical And Mechanical Properties ◽  
Theoretical Research ◽  
Design Stage ◽  
Mineral Fertilizers ◽  
Technological Parameters ◽  
Additional Energy ◽  
Gauge Link ◽  
Humus Layer

The purpose of research is to improve the dosing of mineral fertilizers sowing unit, depending on the physico-mechanical properties of the soil. In modern technologies of precision farming with differentiated application of mineral fertilizers, data from various sensors, results of analyzes of soil samples and aerial photography are mainly used, without taking into account factor such as the depth of the humus horizon, which largely determines the soil fertility. On the basis of the Samara State Agricultural Academy, studies are underway on the effect of the depth of the humus horizon on the fertility of the soil. Several machines have been developed for differentiating mineral fertilizers with spreader and cultivator. Currently, a system of differentiated application of mineral fertilizers is being developed for sowing agricultural crops and it is planned to produce a set of equipment for a standard seeder UCS-8 Vesta. A constructive scheme of the device for determining the traction resistance is presented, which is closely related to the depth of occurrence of the humus layer. The main working element of this device is a deformer in the form of a knife, with a dihedral grinding. The article presents theoretical studies of the effect of forces acting on a deformer. Based on the results of the theoretical justification of the technological process of the proposed scheme for determining the traction resistance, the load dependencies on the strain gauge link were derived depending on the drag resistance of the deformer, which is determined by its basic design and technological parameters and the physical and mechanical properties of the soil. The obtained dependences of the traction resistance of the working organs of the tillage implement will theoretically determine the additional energy costs from the introduction of the deformer in the design stage at the design stage of the machine and outline the directions for their optimization.

scholarly journals RESEARCH OF PHYSICAL AND MECHANICAL PROPERTIES OF WOOD-FIBER MATERIALS

2020 ◽  
pp. 451-457
Author(s):  
Aleksandr Yur'yevich Vititnev ◽  
Yuriy Davydovich Alashkevich ◽  
Natal'ya Geral'dovna Chistova ◽  
Roman Aleksandrovich Marchenko ◽  
Venera Nurullovna Matygullina
Keyword(s):  
Mechanical Properties ◽  
Wood Fiber ◽  
Experimental Studies ◽  
Physical And Mechanical Properties ◽  
Production Method ◽  
Strength Properties ◽  
Grinding Process ◽  
Technological Parameters ◽  
Fiber Materials ◽  
Traditional Construction

This paper presents the results of experimental studies of the physical and mechanical properties of wood-fiber boards of the wet production method when regulating the design and technological parameters of the grinding process. This allowed us to determine the influence of the working clearance between the grinding discs and the concentration of fibre mass with the subject to of quality change wood fiber after defibrator using the developed construction of the disc fibrillation action on the physico-mechanical properties of boards. As a result of the experiment, regression models were obtained that adequately describe the studied grinding process and allow predicting the values of physical and mechanical properties of the finished product depending on the established  parameters process. A comparative analysis of the size and quality characteristics of the fiber semi-finished product and its fractional composition when using a developed construction the disc of refiner fibrillation action and a traditional design used in industry is carried out. The preferential efficiency of the grinding process under the fibrillating effect the disc of refiner in comparison with the traditional construction disc of refiner is established. As a result, there is a significant improvement in the quality indicators of the fiber semi-finished product and its composition due to the formation and predominance in the total mass of long and thin, respectively, flexible fibrillated fibers with high tile-forming properties, which allows to increase the strength properties of the product (by 20–25%), without using binding resins.

scholarly journals Intensifications of the wooling mechanism with increasing electric conductivity of fibers

Academia Open ◽  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Khasanov Doston
Keyword(s):  
Mechanical Properties ◽  
Electric Conductivity ◽  
Quaternary Salt ◽  
Water Soluble ◽  
Technological Parameters ◽  
Protein Fiber ◽  
Effect Of The Composition

The wide possibilities of modifying manufactured industrial fibers aimed at improving their physico-mechanical properties, structural and technological parameters. In connection with the above, it was of interest to study the effect of a number of water-soluble compositions based on a poly-quaternary salt of dimethyl-allyl-β - methacryloyloxyethylammonium bromide in combination with glycerin on the structural and physico-mechanical properties of protein fiber, and also to study the effect of the composition on wool spinning and the quality of wool yarn .

scholarly journals Research of Loop Transferred Structures on V-Bed Flat Knitting Machine

2020 ◽  
Vol 8 (6) ◽  
pp. 2565-2570
Keyword(s):  
Mechanical Properties ◽  
Service Sector ◽  
Breaking Strength ◽  
Life Time ◽  
Volume Density ◽  
Raw Material ◽  
Loop Length ◽  
Technological Parameters ◽  
Pattern Effect ◽  
Stitch Density

Today, the production of knitwear is developing at a faster pace. In industry, trade and the service sector, the production of knitwear, combining high technology and low cost, with good consumer properties is urgently required. Consumers today are looking for comfort, fashion and style, which results in ever-changing demands on the apparel market. As the consumer’s requirements to quality and appearance of product are daily increasing, the attention to the question of replacement of a smooth cloth on wide assortment with pattern effect is sharply brought. This work deals with the analysis of technological parameters and physical-mechanical properties of the knit fabric with pattern effect. With the aim of to expand the assortments of knitwear and to use the technological capabilities of double-bed flat knitting machines in fullest extent possible, on the base of rib structure, by using of loop transference 2 new variants of combined structure were developed and recommended. Samples differ from each other by the rapport and pattern effect of the knit structure. Technological parameters, such as loop length, stitch density, surface and volume density, physical-mechanical properties, such as breaking strength and elongation of newly developed combined knit structures were also determined by experimental method. Loop length and stitch density are important variables, that by changing them, the surface and volume density can be changed, that can manage the raw material consumption and determine the quality of knit fabrics. Breaking strength and elongation are important and decisive parameters for end uses since low strength properties shorten the useful life time as well disable the functionality of these products. Patterns of influence of structural elements, such as transferred loops on the surface density and volume density of knitwear was established. It is found that offered structures have some advantages to compare to basic structure. On the aim of resource economy technology, they give a possibility of raw material expenditure decreasing 22-47%.

scholarly journals PENENTUAN SIFAT MEKANIS DAN FISIS BATU BATA DENGAN PENAMBAHAN ARANG TEMPURUNG KELAPA ASAL ALOR

2018 ◽  
Vol 3 (1) ◽  
pp. 80-85
Author(s):  
Ernawati Kawa ◽  
Minsyahril Bukit ◽  
Albert Zicko Johannes
Keyword(s):  
Mechanical Properties ◽  
Physical Properties ◽  
Compression Strength ◽  
Physical And Mechanical Properties ◽  
Strength Test ◽  
Coconut Shell ◽  
Mechanical And Physical Properties ◽  
Maximum Limit

Abstrak Telah dilakukan penelitian tentang penentuan sifat mekanis dan fisis batu bata dengan penambahan tempurung kelapa asal alor. Penenlitian ini bertujuan mengetahui kualitas batu bata yang memenuhi standar kelayakan sebagai bahan konstruksi dengan penambahan arang tempurung kelapa aal alor dengan presentasi 0%, 5%, 10%, 15% terhadap tanah liat (lempung). Batu bata dicetak dengan prosedur pemadatan, pengringn dan pembakaran. Setelah prosedur pencetakkan selesai kemudian di lanjutkan dengan pengujian sefat mekanis dan sifat fisis, yaitu uji kuat tekan (compression strength), densitas (density), porositas (porosity) hasil  kuat tekan batu bata didapatkan berdasarkan pengujian: a) uji kuat tekan, batu bata tanpa penambahan (0%) : 4,94 meemenuhi standar kuat tekan kelas 50 (SNI 15-2094-2000), b) uji porositas, batu bata 0% dan 5% : 3,82% dan 17,93% memenuhi standar porositas dengan batas maksimum 20% (SNI 15-2094-2000) dan uji densitas, batu bata tidak ada yang memenuhi standar (SII 0021-1978) Kata kunci: sifat mekanis, sifat fisis, tempurung kelapa, densitas, porositas, kuat tekan Abstract A research had been conducted to determine physical and mechanical properties of the bricks with the addition coconut shell charcoal from alor. This research aims at the quality of the bricks to meet the standars of eligibility as a contruction material. The addition of coconut shell charcoal is variate with the presentage 0%, 5%, 10%, 15% to the clay mass. The brick being printed with procedure compaction, drying, and baking. After the printing procedure is done then next is testing the mechanical and physical properties, that is compression strength test, density test, and porosity test. The brick quality result is obtained based on the test: a) compression strength test, the brick without addition (0%) : 4,94  (SNI 15-2094-2000) is comply with the standard compression strength the class 50 , b) porosity test, the brick 0% and 5% (3,82% and 17,93%) meet the standard with the maximum limit 20% ( SNI 15-2094-2000)  , and c) density test, every bricks does not meet the standard (SII 0021- 1978). Keywords: mechanical properties, physical properties, coconut shell, density, porosity, compression strength

scholarly journals METHOD OF SAMPLE MANUFACTURING FROM MULTILAYER COMPOSITE MATERIALS FOR STUDYING THEIR MECHANICAL PROPERTIES

2018 ◽  
pp. 16-23
Author(s):  
Alsaid Mazen ◽  
Ali Salamekh
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Polymer Composite ◽  
Testing Machine ◽  
Physical And Mechanical Properties ◽  
Polymer Composite Materials ◽  
Technological Parameters ◽  
Cutting Out ◽  
Method Of Production ◽  
Economic Considerations

In the last decades there is increasing the need to apply polymer composite materials in different industries, particularly in shipbuilding. There are developing single structures made from polymer composite materials to be used on board ships. The article focuses on technology of manufacturing slabs from polymer composite materials to carry out mechanical testing in the laboratory special standard units. Mechanical properties of polymer composite materials depend on molding technologies. There has been described a technology of sample manufacturing from polymer composite materials reinforced with glass fiber mat with fiberglass plastics. The technique of testing the specified samples for tensile strength has been considered. The sizes and shapes of the samples as well as the technological parameters of the manufacturing process have been validated, depending on the standard requirements and the technological features of the testing machine. The physical and mechanical properties of the components that make up the composite materials are considered. The sequence of stacking layers for preparation of plates from composite materials is indicated. The dimensions of the plates for cutting out finished samples are determined, depending on the method of production. The way of laying plates from composite materials has been chosen on the base of economic considerations and conditions of accessibility. The obtained results of mechanical properties can be used in solving problems of application of polymer composite materials in shipbuilding, for example, in manufacturing superstructures of some dry cargo vessels.

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