bluuebunny/crossref_metadata_2025_split huggingface dataset:
Theoretical Investigation of Friction Welding on Magnesium and Aluminium Alloy
Authors: Kumar R. Praveen , Rajavel R. , Navaneethakrishnan G. 
Published: October 2020

Abstract
In this study, the weld ability of Aluminium Alloys 5083, 6061, 7075 and Magnesium AZ31 was investigated using Friction Welding. Magnesium AZ31 is the base alloy used and other Aluminium alloys were welded with Magnesium Alloy. These Alloys are welded by changing the parameters. Parameters which were used are speed of the spindle, pressure applied during friction, time for which the materials are kept under friction time, Forging Pressure and Forging time. Once the materials are welded by the process of friction welding the weld specimen joints are examined for its changes in its microstructure by the Scanning Electron Microscope (SEM). In order to evaluate the welded specimens mechanical properties the tests such as tensile test and micro hardness tests are carried out. It is found that a specific strength by friction welding method is achieved by aa combination of Magnesium alloy AZ31 along with Alumunium alloys such as 5083, 6061, 7075 by the experimental results.
3D Printing of Poly Lactic Acid Bone scaffold combined with Poly Ethylene Glycol for tissue engineering applications
Authors: Dinesh Kumar S , Yogesh P 
Published: October 2020

AbstractAdditive Manufacturing (AM) is a new trend in manufacturing in which computer aided design (CAD) 3D model file is used to make a solid physical model of the designed part. Fused deposition modelling (FDM) a technique in additive manufacturing has revolutionized engineering in various applications. One of the significant impacts of this technology is on the medical industries. The most substantial reason is because of this technology’s facility to convert 3D medical imaging data into solid objects. The productional cost of an implant and other instruments reduced because of the ease of this technology which significantly reduced the cost charged from the patients. Polylactic acid (PLA) is conceivably one of the best-known polymers shaped from renewable raw materials such as sugar cane and corn starch. Poly(ethylene glycol) (PEG) is an FDA approved low toxicity material which is in re water-soluble liquid state or waxy solid-state. It is used in preparations of cosmetics and pharmaceuticals. Most of the emulsifying or wetting agents and lubricants are manufactured using PEG. Also, PEGs are suitable plasticizers owing to their low glass transition temperature. PLA/PEG has a hopeful probable for large-scale manufacture of green composites towards various applications in biomedical fields. In this research work, PEG reinforced polylactic acid composite were produced in 2, 5 and 10 wt. % PEG content by a single-screw extruder in filament form. The results obtained during the experiment indicated that PEG concentration enhances the processing of PLA, but changes in various features like relevant surface, geometry ad structure were observed. The addition of PEG in PLA had significantly changed the rate of degradation of the FDM fabricated scaffolds.
Investigation on Pineapple and Pirambu Natural Fibres Reinforced with Polyester Hybrid Composite
Authors: Daniel Lawrence I , Parameswara Raja G , Anbarasan A , Gnanaraj J 
Published: October 2020

Abstract
Composite materials have gained their presence in several industrial sectors. New materials, advanced material treatments and manufacturing methods have been introduced in research and developments today. Experimentation in composite materials has changed the people to come up with new innovations and alternative ideas in day today applications. This work focuses on obtaining the mechanical characterization and morphological study on composite materials which are prepared by compression moulding. The prefabrication tests were conducted to know the specific nature of each fibre material by conducting single fibre and FTIR test. This experimental measurement was observed the better mechanical properties from Tensile, Flexural and Impact test with the specimens of the prepared composite lamina of composite. The morphological study in fractured specimens was observed by using Scanning Electron Microscope and Energy Dispersive X-ray Analysis. This research work were represented the mechanical characteristics and morphological behaviour of pirambu pineapple hybrid polyester composite and also will help us for implementation of new manufacturing applications with composite materials.
Influence of eggshell particles on mechanical and water absorption properties of hemp-glass fibres reinforced hybrid composites
Authors: Bhoopathi R , Ramesh M 
Published: October 2020

Abstract
The objective of this work is to analyze the mechanical strengths and water absorption characteristics of sodium hydroxide (NaOH) treated hemp natural fibre (HNF) and eggshell particles (ESP) reinforced polymer composites. The composites were fabricated with and without ESP (0%, 7%, 14% and 21%) by hand-lay process and the tensile, shear, flexural and impact strengths and water absorption characteristics of samples were analyzed. The HNF with 0% ESP composites exhibits the superior tensile strength of 80.46 MPa and holds the maximum shear strength of 1.48 KN, followed by 14% of ESP composites withstands the bending load of 0.19 KN. The samples contains 21% of ESP absorb the high impact energy of 10 joules. The morphological characteristics were analyzed by scanning electron microscopy (SEM) analysis.
A Review on Polymer Impregnated Concrete with Steel Fibre
Authors: Teja S. Indra , Ramesh kumar G.B. 
Published: October 2020

Abstract
Work of steel strands has been taken out from the waste tires in fibre generation fortified fresh cement is another test in diminishing the effect of unused components on earth. These research plans to evaluate impact of RSF on compacting strength as well as reduction conduct of SCC by remembering various strands length for expansion to utilize different contexts. Six blends of reused steel filaments fresh cementwas created. Control blend, single RSF length content blends as well as mixed substance blends (substitution of small filaments by large strands at substance of 20%, 40% as well as 90%) has been done. Complete RSF context is placed steady at 45 kg/m3. Outcomes tells that expansion ofRSF influences reduction of SCC blendsespecially following 23 days. Expansion of RSF defers breaking time not with Standing decrease width of splits.
Development of basalt based nanoparticles reinforced composites
Authors: Saravanan S , Parkunam N , Navaneethakrishnan G , Karthikeyan K , Jaya Suthahar S T 
Published: October 2020

Abstract
Epoxy resin is used in a various fields, from transport to automotive industrial components due to their outstanding mechanical and chemical indisposition properties, the formulation is very easy and their cost also very low. Basalt fiber is very popular because of its ease in manufacturing and having good mechanical properties. To ensure the proper dispersion, the epoxy filled filler mixed with the hardener using a mechanical stirrer. The composites properties such as density, tensile, compressive, impact strength, hardness and wear rate required dimensions as per the ASTM standards. The wear rates are decreased with increased in TiC weight percentage in basalt fiber, because of high hardness. The values of wear rates are started from 2.179 to 1.337 m3/Nm.
Analysis of Green Fuel for Diesel Engine
Authors: Senthur N S , Imamulhasan H , RamGanesh H , Shafquath ibn sulthan S 
Published: October 2020

Abstract
We are One of the inconsumable oils that could be used to produce green fuel is Tamanu oil. It is derived from Tamanu green plant seeds. This research describes about the features, analysis that have been performed by an empirical study on using Tamanu oil as a raw material to generate green fuel in diesel engine. The green fuel Tamanu Methyl Ester Tamanu100 and its blends Tamanu30 and Tamanu60 are used in engine to test the efficiency of the fuel. The characteristics of the engine that are impacted such as brake thermal efficiency, brake specific energy consumption, unburned hydrocarbon, carbon monoxide, and release of NOX have been measured using Tamanu100 green fuel and the output of the tests have been contrasted with conventional fuel. It is noted that the green fuel resulted in trivial reduction in brake thermal efficiency. Release of hydrocarbon and carbon monoxide has lessened on using green fuel with substantial release of oxides of nitrogen. Also, the ignition characteristics such as cylinder gas pressure, ignition delay period have been detailed. The output from the experiments has been contrasted with conventional diesel fuel by applying various load conditions.
Experimental Investigation of Eco-Friendly and Energy Efficient Auto and Allo Thermal Charcoal Kiln
Authors: Muninathan K. , Venkataramanan M. , Prabhu G. Ashwin , Vikneshpriya K. , Daarthi C. 
Published: October 2020

Abstract
Like many countries in India, Charcoal production is the primary employment for rural masses in most of South Tamilnadu. It is a foremost source of income and environmental degradation in rural regions. The yield and transport of charcoal are a precarious process with energy and economic cycle. This process emits greenhouse gases to the atmosphere. It frequently made in traditional charcoal method that are harmful to the environment. It requires efficient man power for completing the process. The quality and yield for the conventional method is very low because of prolonged time. This method is mostly practised in rural areas. People over there will be more concern about quantity not the quality. So this reduces the yield of the charcoal. In this eco-friendly concept time consumption is reduced and hence yield will be more than the conventional method. In this paper, the indirect heating kiln has been tested with prosopis juliflora wood and the results were the lowest ash content of less than 2% and fixed carbon content of greater than 75%. The temperature was in range of 400-600° C inside the kiln which helps to understand the process of pyrolysis reactions.
Investigation on Performance and Emission of Pongamia Biodiesel Using Diethyl Ether and Zinc Oxide as Additive in Diesel Engine
Authors: Rajesh K , Devan P K , Lokesh B , Rajesh Kumar K , Vignesh R , Yogesh Kumar R 
Published: October 2020

Abstract
Biodiesel is one of the better replacement for diesel fuel because of the depleting fuel resources. The cost of the biodiesel compared to diesel is major setback in commercialization. As mass production is encouraged the cost involved in production will reduce and may available at the cost less than diesel. Biodiesel is one of the promising source of fuel which stands as one of the better alternative diesel fuel. This study represents the production of biodiesel by using esterification and transesterification of pongamia oil which is obtained from pongamia pinnata. Diethyl ether and zinc oxide used as additive to enhance cetane number, properties of biodiesel. The DI diesel engine is tested for its Performance and emission characteristics using pure biodiesel, biodiesel with 5%DEE biodiesel with 50ppm of zinc oxide, diesel on four stroke direct injection diesel engine were studied. And found that biodiesel with 5%DEE gives better result than biodiesel. Biodiesel with added additives gives 5% higher brake thermal efficiency than diesel at full load condition, hydrocarbon emission less than 10%, carbon monoxide emission 40.35% less than B100, NOx is 0.7%, hydrocarbon 11.36% were lower than biodiesel. Thus, pongamia biodiesel with 5%diethyl ether can be used as one of the alternative source of energy for diesel.
Modeling of the electromagnetic and elastic properties of composite materials
Authors: Dimitrienko Yu I , Zubarev K M , Yurin Yu V , Yakovlev V I 
Published: October 2020

Abstract
In this paper, we consider the solution of the problem of the theory of piezoelectricity. The effective elastic, piezoelectric, and dielectric characteristics are calculated for a two-layer composite with a volume concentration of layers of 50%. The corresponding characteristics are calculated for a two-layer material with an orthogonal-reinforced structure. For the numerical solution of the problem, the conjugate gradient method for solving systems of algebraic equations was used. The results were visualized using a software package developed at Bauman Moscow state technical University. The paper presents the distribution of the stress field σij and the vector

d
¯

i

in problems Lr
and Lpq
.
Mechanics of orthotropic plates with honeycomb filler
Authors: Berezin A V , Lyubchenko M A , Gadolina I V 
Published: October 2020

Abstract
Materials with a honeycomb structure have a cellular geometry, which reduces the amount of material used to achieve mass perfection of the finished structure. Due to the widespread application of honeycomp composite materials (structures), the need for developing the design methods exists. It is especially important to have design methods to guarantee the longevity and reliability of the elements of aviation structures during the exploitation. The peculiarities of operation such complicated elements as honey comb require consideration of existing of tough and soft layers, which work differently. The equations of motion of the three-layer plate with honeycomp filling are given. Some important issues of investigation based on this equation are described. In the paper, the questions of destructive and non-destructive diagnostics of composite constructions are discussed.
Analysis of 3D-reinforced composite annular plate subjected to concentrated forces
Authors: Sarbayev B S , Bregvadze D T 
Published: October 2020

Abstract
This paper is dedicated to the solution of the problem about 3D-reinforced composite annular plate compressed by concentrated forces. 3D-reinforced composite materials, including high-temperature composites, are widely used in modern space industry, while their properties are insufficiently studied. Analytical solution of considered problem about annular plate compression will be a foundation for a method of determination of anisotropic composite materials stress-strain properties needed when conducting structural analysis: elastic and shear moduli, and Poisson’s ratio. Transverse shear deformations and changes in annular plate metrics during deformation are taken into account in the process of finding analytical solution of the problem. The analytical solution of the problem about annular plate compression was obtained by the authors. This solution is used to find relations between required properties of annular plate and radial displacements of annular plate characteristic points.
Carbon nanofillers in polypropylene: in situ synthesis and properties
Authors: Palaznik O M , Nedorezova P M , Shevchenco V G 
Published: October 2020

AbstractComposites of polypropylene and different carbon nanofillers (graphene nanoplatelets and carbon nanotubes) were prepared by in situ polymerization using a homogeneous isospecific metallocene catalyst rac-Me2Si(2-Me-4-PhInd)2ZrCl2 activated by methylaluminoxane. The electrophysical, mechanical, thermophysical properties of the composites have been investigated. Even small amounts of carbon nanofillers significantly improve the mechanical and thermophysical characteristics of composites. The use of carbon nanofillers makes it possible to prepare composites with controlled electrophysical characteristics.
Matrix curing in the workpieces made of polymer composites using microwave radiation
Authors: Prosuntsov P V , Reznik S V , Gareev A R , Polsky P V 
Published: October 2020

Abstract
The physical and mathematical models of curing of polymer matrix composite under microwave radiation are presented. The models describe the processes of the electromagnetic radiation propagation in the volume of the operating area, volumetric heat generation due to the electromagnetic energy absorption and the exothermic curing of the matrix as well as conductive heat transfer in the workpiece and radiation heat transfer between non-uniformly heated surfaces of the workpiece and the walls of the operating area. The modeling of the curing in thick-walled and thin-walled cylindrical workpieces is performed. The challenges of processing of thin-walled parts are presented.
Innovative processes of production functional gradient layered compositions with enhanced tribological properties
Authors: Mikheev R S 
Published: October 2020

Abstract
Arc surfacing processes are proposed as innovative methods for the synthesis of functionally gradient layered compositions. Existing composite filler materials based on aluminum and tin have been investigated. The schemes and technological parameters of arc welding allowing to produce the coatings having a composite structure with a given reinforcement ratio, satisfactory reinforcements distribution, and enhanced tribotechnical properties have been shown.
Simulation and Optimization of a CFRP and a GFRP floating pontoon
Authors: Lotfy M N , Fathallah E , Khalifa Y A , Dessouki A K 
Published: October 2020

Abstract
According to the unique mechanical properties of composite materials, the replacement of the conventional materials like steel with composite materials is increasing in all fields. The low weight / capacity characteristics of composite materials make it possible to accommodate much more loads. Because of the great importance of the floating bridges for both military and civilian purposes especially in crises, the evolution of floating bridges is necessary. The traditional transportation steel ferry is composed of floating steel pontoons to accommodate the MLC-70 (Tank load) of weight equals (63.5 t). In this study, the steel floating pontoon is replaced with composite pontoon simulated for both carbon fibres polymers and glass fibres polymers with the laminate configuration

[

∝
1
∘

/

∝
2
∘

/

∝
3
∘

/
…
.
/

∝
n
∘

]

. The finite element analysis is performed using ANSYS software. The capacity of the ferry is increased to reach (90 t) instead of (70 t). The total deformation is determined under the applied load. The failure criteria is investigated for both composite models (Tsai-Wu, Tsai-Hill, maximum stress and maximum strain). The nonlinear buckling analysis is also, investigated. The optimization process is designed and performed to get the optimum number of layers and angles orientation of the composite layers as well as possible.
Research of change of mechanical properties of the ionic-alloyed samples in the corrosion environment
Authors: Giniyatullin R R , Yakupov N M 
Published: October 2020

Abstract
Currently, it is becoming urgent to create composites from various materials using their strengths to obtain the desired properties. The method of modification of the surface layer of a structural element using ion alloying is one the most promising. This method is used for obtaining corrosion-resistant composites. In this article we can find the results of an experimental-theoretical study of the mechanical properties of thin-walled structural elements whose surface is alloyed with carbon ions. It is used to reduce the corrosive deterioration.
Solution of experimental tasks in the study of physics
Authors: Nurkasymova S N , Nurgaliyeva U S , Zhanys A B , Baigizova A S , Bayegizova A S 
Published: October 2020

Abstract
The solution of experimental problems has features that reveal wide opportunities for the development of students’ creative abilities in the learning process. The task of developing the creative abilities of students is an integral part of the problem of developing their thinking. All problems are solved with the help of an expert. An experiment is a set of sciences about the laws and forms of thinking, about the mathematical-logical laws of calculus, about the most general laws of thinking. Experimental apparatus allows you to build the necessary judgment or inference, to highlight a certain concept with its essential features.
Methods of teaching computer science in the system pedagogical knowledge
Authors: Nadyrova F K , Zhanys A B , Mubarakov A M 
Published: October 2020

Abstract
Modernization of education began to wear a permanent, permanent character in the modern world, since the dynamics of changes in the needs of individuals, society and the state for education is steadily growing. For quite a long time, the main subject of the modernization of school education was its content. However, in recent years, it has become increasingly clear that the center of gravity of the renewal and development of education should be shifted towards methods, innovative forms and means of education. The system-activity approach as a methodology for constructing state standards of general education closely links educational results with certain types of schoolchildren’s learning activities. It is clear that the use of new types of educational activities will force to look for new innovative forms of their implementation. The subject of the methodology of teaching informatics and a place in the vocational training system for an informatics teacherComputer science as a science and a subject in school. The connection of teaching methods of computer science with pedagogy, psychology and computer science. Methodical system of teaching computer science in a secondary school. General characteristics of its main components (goals, content of training, methods, forms and means of training).
Overview of 4G, 5G radio spectrum spectrum in the world and Kazakhstan
Authors: Tolegenova A S , Zhanys A B , Nurkasymova S N , Soboleva L A 
Published: October 2020

Annotation
Mobile operators support data transfer on 2G (GRPS, EDGE), 3G (EV-DO, HSPA) networks. In some regions, data services are provided on WiMax networks. In 2012 ALTEL launched 4GLTE data distribution network. GSM standard in Kazakhstan has started to decline in mobile communication revenue since its first launch in 2013. By the end of 2015, they totaled 19% to 249 bln. tenge. In February 2016, income from voice communications was less than the revenue from Internet access services. Mobile communication in Kazakhstan is carried out in GSM (900, 1800) and UMTS (900, 2100) formats. In 2012 the mobile accessibility index was 120%. Mobile accessibility in Kazakhstan in 2015 will increase by 185%, to 31 mln. SIM card is already registered. More than 35% of these SIM cards (11 million) are Internet access. GSM and UMTS mobile operators are: Kcell and Activ trademarks are owned by Kcell (GSM Kazakhstan OJSC JSC Kazakhtelecom OJSC until 2012) (controlling interest is owned by TeliaSonera, acquired by Kazakhtelecom JSC,% Scandinavian-Turkish holding of FinTur 47); Altel JSC (owned by Kazakhtelecom JSC), ALTEL 4G GSM + LTE (the share of the company in the mobile market is 3.6% (December 2012). Altel JSC - First national mobile operator of the Republic of Kazakhstan [1]. “Kar-Tel” LLP (subsidiary of Russian holding Vympel-Communications) and “Beeline Business” (previously K-Mobile)); Mobile Telecom-Service LLP (former Neo) with Tele2 trademark. Kcell (KCEL) is a mobile operator GSM900, GSM1800, UMTS / WCDMA (2100 MHz), LTE / 4G, LTE Advanced (700/800 MHz and 1700/1800 MHz). “Activ” and “Kcell” brands. In 2018, KazakhTlecom acquired the shares.
Research of physical and mechanical properties of reinforced carbon fiber plastics based on tfp-preforms
Authors: Orlov M A , Polikarpova I A , Solodilov V I 
Published: October 2020

Abstract
The article provides for studies of physical and mechanical properties of samples of carbon fiber reinforced plastics on the basis of tfp-preforms produced using various stitching technological parameters. The effect of the carbon fiber laying density and the piercing step of the aramid yarn on the strength properties of composites is shown. Optimal technological parameters of the creation of tfp-preforms were chosen.