bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Review On Friction Stir Welding And It’s Processes
Authors: Ramnath B Vijaya , Elanchezhain C , Vignesh C , Sudharsan V , Ganesh C Selva 
Published: October 2020

Abstract
Friction stir Welding (FSW) is a solid-state joining process which removes the common problems encountered in conventional welding processes. FSW is normally suitable for alloys of aluminium, magnesium and steel. Sectors like automotive, aerospace, ship building and electronics industries are facing problems with fusion welding, since there is a huge difference in chemical and physical properties of components to be joined. This paper reviews the basic principle and methodology of FSW and covers all the technical aspects like mechanical characterization, similar and dissimilar combinations, micro structural characterization.
Analysis and Optimization of Abrasive water Jet Machiningprocesses on the hybrid nano particle reinforced Aluminum alloy matrix composite material
Authors: Venkatesh R. , Rao Vaddi Seshagiri , Ashwin kannan S. , Mullaikodi S.M. 
Published: October 2020

Abstract
The Nano hybrid particles reinforced aluminium based MMC has been prepared and characterized. The materials chosen for the fabrication of the composites include Aluminium Al6061 alloy(70%) as the base or matrix material in the composite reinforced with hybrid Nano materials as the particulate reinforcements (Cu-9%, Gr-9% and Al2O3-12%) were prepared by following the stir casting route. The developed material has been characterized and subjected to AWJM process. The input parameters were carefully chosen. The Experimental design was formulated for the orthogonal array of L30. Observations were made and the results were taken to the Design Expert software so as to do the optimization process. Reinforcing a hybrid mixture comprising of an alloy, a metal, a ceramic and allotropy of carbon in the matrix and analysing their properties are in itself unique and such works are scanty. The material thus fabricated showed few novel characteristics. The conduciveness of processing the material, aimed at providing the good quality surface and the ease of reducing the bulk material were investigated. Unique tool for optimization proposed by RSM “the Central composite Design” was put in to use in this work. Bearings, Bushes etc. known for their structural supports could be manufactured using this material exhibiting good machinability aspects.
Exploration of Properties of Meat Waste Incinerated Fly ash / Cement / Sand Dust associated Fly ash Bricks
Authors: Thanikachalam J , Ganesh N 
Published: October 2020

Abstract
In this modern technology the generation of meat waste causes the considerable impact to the environment and it creates higher level of air pollution, water pollution and land pollution. These pollution causes ill effects to human beings and other living organisms by the creation of harmful micro-organisms which accounts to spreading of diseases. In order to addressing this issue and to utilize the waste as the part of waste management. The meat waste that are incinerated in the specially designed incinerator which does not create any pollution. The fly ash obtained from the incineration of meat waste was incorporated in the manufacturing of fly ash bricks along with the fly ash obtained from the thermal power plant and these mixture are mixed with the sand / stone dust by using cement as the binding agent. Under various proportions the brick was manufactured according to the NTPC guidelines for manufacturing Quality fly ash bricks. After manufacturing the bricks, Brick’s property such as Compression strength test, Water absorption test and the Efflorescence property test were conducted in order to identify the best sample out of all manufactured fly ash brick samples. On manufacturing these types of bricks the environmental caused by the meat waste was reduced drastically.
Dilatometric Methods: Insights of other researchers
Authors: Pavithra E 
Published: October 2020

Abstract
Measurement of thermal expansion and contraction of a solid material during heating and cooling is done using dilatometer. To obtain best results dilatometers are operated under vacuum or inert atmosphere. The physical and chemical characteristics are inferred from the dilation of the material. It helps to study the properties of the sintered material and the phase transition of the solid material. Few authors also developed a customized dilatometer for their research applications. This paper deals with those different designs, the various material characteristics providing adequate data to make researchers identify the new area of research for the dissimilar materials. The thermo physical chemical property studies based on the dilatometer are reviewed in this paper.
Conventional Concrete Over Polymer Impregnated Concrete Using Silica Fumes
Authors: Aswini Gutthi , Kalpana  
Published: October 2020

Abstract
Present research targets finding compacted quality as well as scraped spot opposition capacity for polymer tar changed cement with silica rage. While exploratory program, solid blends are planned with allotted estimations of water-to-binder proportion at 0.7, volume of total at 67%, sand level at 45% volume of total, as well as polypropylene measure fiber at 0.6 % volume of cement. Trial factors incorporated the silica smolder sum shifted at 0 %, 5% and 10% of powder volume, and the measure of unadulterated acrylic polymer pitch differed at 0%, 5% and 10% load of powder. The exploratory aftereffects of study shows when strength of cement diminished by 22.4 %∼34.2 % with the expansion of the polymer content. The weight decrease of the polymer altered cement incited by scraped area assault diminished 6.78%∼21% and 14.68%∼25.82% in dry and wet conditions, individually.
Improved hardness characteristics of Mg-3Zn-1Cu-0.7Mn alloy composites reinforced with Al2O3 synthesized by powder metallurgy
Authors: Tharakan S Silan , Sivapragash M 
Published: October 2020

Abstract
A novel composite Mg-3Zn-1Cu-0.7Mn reinforced with Al2O3 particulates was synthesized using the powder metallurgy route and extruded at 400°C. The investigation mainly focuses on the influence of Al2O3 on the hardness characteristics of the composites. The results indicate the microhardness of the composite is enormously enhanced by incorporating the Al2O3 particulates to Mg alloy. The homogeneous distribution of the hard ceramic reinforcement particulates and the presence of intermetallic phases such as Cu5Zn8, MgZnCu, and Al0.93Cu1.07Mg attributed the improved hardness. It is recognized that the stress-relieving process further improves the hardness of the composites. The extrusion parameters also influence the hardness characteristics of the composites.
Fabrication and Corrosion Behaviour of Aluminium Metal Matrix Composites – A Review
Authors: Ashok Kumar R , Akash S J , Arunkumar S , Balaji V , Balamurugan M , Jeevan Kumar A 
Published: October 2020

Abstract
Metal matrix composites (MMCs) corrosion nature is discussed with significance in regard to MMCs corrosion behavior with MMCs electrochemical and chemical properties. Galvanic corrosion between base metal and reinforcement influences the corrosion process in MMCs. The corrosion behaviour of Aluminium Metal Matrix Composites (AMMCs) reinforced with carbide and other solid waste is reviewed. AMMCs are capable of admitting the assault of corrosion over the base metal. AMMC’s corrosion type of behaviour is localized with galvanic corrosion, the intermetallic phase between base alloy and reinforcement, micro cracks, voids, are the corrosion-influencing factors. The corrosive action of solid carbide-reinforced AMMCs (Aluminum Metal Matrix Composites) and other solid waste is analysed. The AMMCs have strong mechanical and tribological characteristics but no achievement in the effects of corrosion. Coatings methods are used to enhance the behaviour of AMMCs in corrosion.
Solar Energy based low cost Converter for Rural Houses Electrification
Authors: Sudhakar T D , Srinivas K N , Mohideen S Kaja 
Published: October 2020

Abstract
A Rectified Sinusoidal based Pulse generation method for a DC – DC converter is proposed in this discussion. To exhibit this, the methodology is applied to a Self-Lift topology based SEPIC converter. In this paper a two stage grid connected system is used. In stage I the said converter is used for boosting and DC rectification. This converter is considered, can provide the required voltage from a renewable source. The DC rectification is done by using the RSPWM technique. Stage II uses an inverter which inverts the DC rectified signal to produce AC signal. The usage of the bulky transformers are avoided by using the proposed modulation technique. The notable advantages of the RSPWM technique are : (i) the switches of the inverter are functioned at low frequency (50Hz), (ii) harmonic content of the output waveform is reduced because of RSPWM, (iii) decrease of the filter size and (iv) inverter switches life time are increased as complicated control techniques are avoided. These features are validated through simulations.
Physicochemical Analysis, Elicitation and Charaterisation of Bio-oil from Aloe barbadensis
Authors: Jagadesan P , Rajan S Prithivi , Chauhan Aditya Singh , Narayana Chandana S , Vijayalakshmi S , Ranjitha J 
Published: October 2020

Abstract
Biodiesel from plants can compete economically with petroleum diesel fuels as a future prospective fuel. The bio-oil was extracted from the plant of Aloe barbadensis by soxhlet extractor using hexane as an organic solvent, and then further, the oil was analyzed for moisture content, pH, specific gravity, density, viscosity, saponification value, refractive index, peroxide value, acid number, free fatty acid, and iodine value. The results showed that four major fatty acids, like nonadecanoic acid, n-hexadecanoic acid, octadecadienoic acid and octadecenoic acid were present in the bio-oil of Aloe barbadensis and characterized by GC-MS, which showed that the bio-oil could be used for producing high quality of biodiesel. In furture studies, converted crude biooil into biodiesel using hetergenous catalyst will be anlaysed for their engine characteristic studies.
Assessment of technological resources for the production of composite products based on mathematical methods
Authors: Brom A E , Stoyanova M V , Yazev M V , Korolev S A 
Published: October 2020

Abstract
This article is devoted to the selection and justification of the use of the corresponding mathematical methods in the formation of a composite product production program and the assessment of the importance of provided technological resources. The choice of marginal profit as criteria of the optimality of the production program is proved. The formalized mathematical formulations of integer and dual tasks of linear programming are presented. The tasks of analyzing the annual release plan for a range of six products is solved. It is concluded that the usage of mathematical methods of linear programming and the theory of dual is successful decision in the field of development of composite production programs.
Composite materialis based on propylene and modified Na +-montmorillonite N, N-diallylacrilamide
Authors: Begieva M B , Bazheva R Ch , Kharaev A M , Borodulin A S 
Published: October 2020

Abstract
The monomer N, N-diallylacrylamide was synthesized by alkylation of acrylamide. The IR spectra of acrylamide and N, N-diallylacrylamide are analyzed. The possibility of obtaining alkyl acrylamide is shown. Modified organoclay is obtained on the basis of montmorillonite of the Na + - form and acrylamide, a water-soluble monomer. The structures and properties of the synthesized compounds were investigated. Composites based on polypropylene modified montmorillonite prepared by mixing in a twin screw melt extruder of the company “JiangsuXindaScience & Technology”. The structure of the composites was investigated using X-ray diffraction and scanning electron microscopy. It is shown that, compared with the unfilled polypropylene, modulus, toughness, melt flow index composites increases, and the time of combustion and the flame propagation velocity is decreased. Shown, that with the introduction of 3-5 wt.% Of the modified Na + - montmorillonite + N, N-diallylacrylamide into the PP, a decrease in the flame propagation rate by 74-79% is observed. The slowing down of the burning rate of the composite is associated with a limitation of the diffusion of atmospheric oxygen into the material due to the presence of a barrier layer created by plane of montmorillonite particles. The presented data are consistent with the results previously obtained in.
Determination of the permeability coefficient in the Darcy formula for liquid molding of thermal insulation products from quartz fibers
Authors: Komkov M A , Badanina Yu V , Yanko P O 
Published: October 2020

Abstract
The results of water pouring of flat samples from chopped quartz fibers with a diameter of 12 microns and an elongation of 560…1680 are presented. Experimental values of water permeability coefficient through highly porous flat samples were obtained. The constant in the Kozeni-Karman permeability formula is determined depending on the porosity of the fiber layer.
Parametric and topology optimization of load bearing elements of aircraft fuselage structure
Authors: Htet Tun Lin , Prosuntsov P V 
Published: October 2020

Abstract
This paper presents the weight reduction of load bearing elements of aircraft DA-62 fuselage structure using parametric and topology optimizations methods. The structural analysis of rear part of aircraft fuselage in various load calculation conditions is performed. In the first step using parametric optimization of structure, allow to reduce its mass to 15.84 %. In addition using topology optimization of optimized structure by parametric modeling added mass reduction to 32.87% of total structural mass.
Estimation of the residual strength of supporting composite structural elements
Authors: Kayumov R A , Strakhov D E , Sulejmanov A M , Tuysina E B 
Published: October 2020

Abstract
The proposed study will allow us to develop a calculation method to predict the service life of fiberglass structures providing reliability and resistance; a design method for polymer composite structures taking into account damage accumulation and aggressive factors that affect the decrease in the strength of the studied material. The method of aging and failure of polymer composite materials was developed. The significance of the results for the construction industry lies in the development of a methodology for assessing the service life of fiberglass structures of the investigated building structures.
Development of equipment for composite 3D printing of structural elements for aerospace applications
Authors: Azarov A V , Kolesnikov V A , Khaziev A R 
Published: October 2020

Abstract
Development of an industrial equipment prototype based on a multi-axial robotic arm KUKA KR3 R540 for composite 3D printing with continuous fiber is presented. Composite Filament Co-extrusion Anisoprint technology is taken as a basis of the equipment. The following advantages of the manufacturing equipment are presented in the paper: ability to produce parts of complex spatial shapes with complex spatial reinforcement; mold fabrication in a single process with a part manufacturing. Complex spatial composite structures manufacturing is demonstrated.
Microstructure and erosion resistance of Mo-Si-B, Mo-Zr-Si-B, and Mo-Hf-Si-B coatings
Authors: Kiryukhantsev-Korneev Ph V , Sytchenko A D , Ulan N 
Published: October 2020

Annotation
Mo-Si-B, Mo-Zr-Si-B, and Mo-Hf-Si-B coatings were obtained by direct current magnetron sputtering. Microstructure and composition of coatings were studied using scanning electron microscopy, energy-dispersive analysis, and glow discharge optical emission spectroscopy. Erosion resistance were estimated in the liquid under the ultrasonic vibration using abrasive particles of SiO2, WC, Si3N4, Al2O3, and B4C. The results obtained showed that all coatings have a homogeneous and uniform structure with no pronounced columnar elements and contain hexagonal h-MoSi2 and h-MoB2 phases. It was found that the most pronounced erosive effect on the coating is silicon oxide powder, which was selected for the main experiments. The highest mass loss of 3.4 g was fixed for Mo-Zr-Si-B sample, while the minimal value of 2.1 mg was found for hafnium-contained coatings.
Developing of the autoclave-free composite manufacturing technology
Authors: Novikov A D , Lubyanskiy A O , Ignatov P I 
Published: October 2020

Abstract
Nowadays there are numerous ways of making parts of polymer composite materials. The main controlled properties of a part depending on a used technology are porosity and binder percentage, which influence on quality and strength of a part, and also manufacturing cycle time and costs of the used equipment. The main aim of the research was to increase the efficiency of the PCM moulding comparing to the resin infusion method. For reaching the aim there was developed the moulding technology with using elastic diaphragm inflation, as well as there were conducted series of tests by using the dynamo-mechanic analyzer. The way of making the mould and pattern of reinforcing plies layout were offered. For technology approbation there were made a serie of carbon fiber reinforced plastic sport helmets, and got results of time properties of manufacturing. It was discovered that the number of parts made for the time unit by using the inflation method twice exceeds the number of ones made by vacuum infusion method. Specific properties of constructions made by the offered technology also exceed properties of parts made by traditional methods. Inflation technology was successfully put in production and proved its efficiency, reliability and profitability.
Increase of the resistance to high-temperature effects of carbon composite materials
Authors: Panina K S , Danilov E A , Kurganova Yu A 
Published: October 2020

Abstract
The article considers the possibility of increasing resistance to high-temperature effects of carbon composite polymeric materials by combining the components of the binder and its modification by silicon carbide powder. The technology for producing a single-layer composite is described. According to the results of the experiments, the composition and amount of the binder and SiC additives leading to a significant reduction in mass loss during high-temperature tests were revealed.
Feasibility review of substitution a high-lift device by a telescopic wing with self-similarity of reynolds
Authors: Bobkov A , Mitashova T 
Published: October 2020

Abstract
This Paper describes results of the feasibility review of a telescopic wing application in unmanned aerial systems with self-similarity of Reynolds Re. Low Re is achieved through low-velocity flow of the lifting surface and small dimensions of an aircraft. Such combination is typical for a mini remotely piloted system according to UVS International classification. At low Reynolds the wing lift and high-lift device performance reduce. While in the high-lift mode, it is possible to adjust the wing area rather than the lift ratio. This can be achieved by a telescopic wing consisting of fixed and retractable sections. A telescopic wing is based on Morphing design with simultaneous wing geometry adapting to current flight parameters in one, two or three planes. The wing is simple by the design and can function as a high-lift device or aileron depending on whether the sections move out at the same time. The area of a telescopic wing with its sections moving out in the high-lift mode needs to be 2.0…2.18 times greater the initial area for Reynolds variation (2.7…4)⋅105.
Development of a compact plasma torch design for welding and surfacing
Authors: Goshkoderya M E , Kondratev N A , Nikitina V R , Zhugarev N A 
Published: October 2020

Abstract
The article discusses the development of the design of the plasma torch used for welding and surfacing, the relevance of the plasma type of welding, the stages of work necessary to develop this design, modeling the flow of protective and working gas.
Characteristics of droplet transfer of electrode metal during MMA depending on the chemical composition of the material of the rod of the coated electrode
Authors: Il’yaschenko D P , Chebotarev Iu I , Sapozhkov S B 
Published: October 2020

Abstract
This article presents the results of experimental studies of the effect of the coated electrode material for MMA welding on the droplet transfer parameters of electrode metal. It has been established that the use of coated electrodes based on copper (OZCH-4) and aluminum (Castolin EC 4001) alloys, compared to traditionally used metal rod based electrodes (Sabaros me20|10, LB-52U), affects the mass transfer characteristics of droplets electrode metal, in the form of an increase in the average duration of arc burning at intervals of melting of the electrode and the period of formation of drops of electrode metal up to 4 times.
Prerequisites for obtaining wear-resistant metal coatings with a high-entropy structure by atmospheric plasma spraying, reflow, and hardening
Authors: Kadyrmetov A M , Popov D A , Snyatkov E V , Plakhotin A A 
Published: October 2020

Abstract
The prerequisites for the use of atmospheric plasma spraying processes with multiple reflow and hardening of coatings are considered as a method of obtaining a highly entropic structure in them as applied to wear-resistant coatings.
Word Visualization of the morphology of the temperature field of the heat pipe with defects of the active type
Authors: Karachinov V A , Petrov A V , Abramov A M , Evstigneev D A 
Published: October 2020

Abstract
Abstract As part of a computer experiment using the finite element method, a method for visualizing the morphology of the temperature field of a heat pipe with defects of the active type – a heat energy source (ITP) was developed. It is shown that when the starting mode of the pipe (

τ
=
0
÷
120

C

) and the ITP power q ≥ 9 104 W/m2, a typical isotherm structure with a convex front is formed. The passage of a rectangular ITP isotherm is accompanied by the formation of a local isothermal contour. Significant variability of the geometric characteristics of isotherms is noted
The universal algorithm for calculating SPICE models’ parameters of semiconductor diodes
Authors: Korchagin A F 
Published: October 2020

Abstract
The methods and procedures for calculating SPICE models’ parameters of semiconductor diodes for the forward and reverse branches of the VAC are described. Recommendations for planning the experiment and selecting initial approximations of parameters for forward and reverse switching of the diode are given. Existing methods for calculating SPICE models’ parameters do not allow obtaining their statistical characteristics, and for some parameters, methods for estimating them from experimental data have not been developed at all. This article offers a universal method for evaluating all the necessary parameters of SPICE models of semiconductor diodes and their statistical characteristics.