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591 articles for “Particles”
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Mechanical Properties and Temperature distributionofHard Facingof SS-304 steelby using SAW
Abstract: Surface engineering is a multidiscipline activity aimed at tailoring the properties or surfaces of engineering materials to improve their function or service life. Mostly; as applied to metals, surface engineering includes processes; such as plating, diffusion treatment, physical and chemical vapor deposition, ion implantation, thermal spray coatings, selective hardening, hard facing, and a variety of less-used and proprietary processes. However; these processes will be described briefly and it will be …
Published in Journal of Automobile Engineering and Applications · Vol. 5, Issue 1, 2018 · pp. 18–29 Read article
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Mechanical Properties of Al6061-Al2O3 Metal Matrix Composite Using Die Casting Technique
Abstract: 6061Al - Al2O3 Metal matrix composites are applied as conventional materials in the domain of aerospace, automotive and marine applications to enhance the physical properties. The present work aimed to prepare metal matrix composite using 6061Al as the matrix material. Particulates of Al2O3 with 40 µm were reinforced using die casting technique. Further level of reinforcement is being varied from 0-16wt% in steps of 4wt%. Microstructural characterization has been conducted …
Published in Journal of Automobile Engineering and Applications · Vol. 5, Issue 3, 2018 · pp. 11–20 Read article
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Some Properties of Briquettes Produced from Sawdust and Different Binders using a Fabricated Hydraulic Piston Press
Abstract: AbstractThis paper describes a fabricated briquettes hydraulic piston press and some properties of the briquettes produced from sawdust when it was used. The press consists of three basic components: the main frame, the mold and a hydraulic jack fitted with pressure gauge. The parts are readily available in Nigeria and relatively cheap. The piston press was used to produce briquettes at 120 bar compaction pressure using composite sawdust and different …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 2, 2017 · pp. 17–23 Read article
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Role of Solid Acid Catalyst in Isopropylation Reaction
Abstract: Cumene synthesis was carried out by the reaction of benzene with isopropyl alcohol in the vapour phase over rare earth metal modified 13X zeolite. Zeolite modification was done by exchanging sodium ions of the zeolite with cerium ions to vary the acidity of the catalyst in the range of 0.25‑1.36 meq/g. The synthesis was carried out over a wide range of operating conditions. The synthesis conditions were optimized by studying …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 2, 2015 · pp. 19–26 Read article
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Alcohol Oxidation in Ionic Liquids Catalysed by Recyclable Platinum Nanoparticles: A Green Approach
Abstract: The effect of particle size on the catalytic performance of materials in organic reactions is of scientific and industrial importance. In the present case we demonstrate the use of room temperature ionic liquids as effective agents of dispersion of platinum nanoparticles prepared from potassium tetrachloroplatinate. The platinum nanoparticles in the range 2.5±0.5 nm are recyclable catalysts for aerobic oxidation of alcohols under mild conditions. The particles suspended in ionic liquids …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 1, 2014 · pp. 15–22 Read article
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Effect of Ground Granulated Blast Furnace Slag as Partial Cement Replacement on Compressive Strength of Concrete
Abstract: AbstractThe main objective of this research work is to determine the optimum replacement percentageof GGBS which can be suitably used. To fulfill the objective, various properties of concreteusing GGBS have been evaluated. Mix design has been arrived for M25 concrete. Fineness,specific gravity (cement and GGBS), normal consistency, initial and final setting time andcompressive strength of cement have been found out. Particle size distribution, bulking of fineaggregate, specific gravity, water absorption …
Published in Journal of Construction Engineering, Technology & Management · Vol. 7, Issue 3, 2017 · pp. 1–10 Read article
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A Study on Tribological Behaviour of Fly Ash Filled Glass Fiber Reinforcement Epoxy Based Composites Using Taguchi Experimental Design
Abstract: Fiber-reinforced polymer composite materials have better corrosion resistance, better wear resistance, reduced weight of structure, good thermal/electrical insulation and conductivity, etc. due to their properties its application field include aircraft, space crafts, automotive, infrastructure, marine, and sporting goods. But a major industrial problem is erosive wear of structure components caused by abrasive particles. Solid particle erosion of engineering/structure components caused due to dusty operational conductions. But, even today, researchers worked …
Published in Journal of Experimental & Applied Mechanics · Vol. 11, Issue 1, 2020 · pp. 1–5 Read article
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Self-Cleaning Solar Panel Affects the Efficiency in Terms of Better Power Output
Abstract: AbstractSolar power is the best way to get green energy in modern era. However, some areas have limited sun access that limits the solar energy in those particular areas. Some areas having full sun access throughout the year are still facing the shortage of green energy due to some technical flaws or technology transfer issues. The efficiency of solar panels is a crucial part of work which directly affects the …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 7, Issue 3, 2017 · pp. 1–4 Read article
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Aerosol to Suggest Climate Delineation
Abstract: Marine aerosol of submicron sized biogenic originated organic fraction is subtending persistently constitutively compared to drastic variation based on volcanic eruptions. Sulphur is studied to form acid aerosol where the basic constituent in the stratosphere is reduced comparatively. High concentrations of organic fraction have been found from aerosol in marine boundary layer (MBL). Marine aerosol chemical composition has been influenced by the yearly biological cycle of the ocean, and so …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 11, Issue 2, 2021 · pp. 51–58 Read article
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VARIATION OF THERMAL CONDUCTIVITY WITH POROSITY
Abstract: Thermal conductivity in porous media as a function of the grain size and porosity has been studied establishing a relation between these two parameters. The study has been developed for a homogeneous porous medium with grain size in a very close range of particle diameter. The study has been extended from very small particles to large ones, to cover most of the real grain size. As a result of this …
Published in Journal of Geotechnical Engineering · Vol. 7, Issue 1, 2020 · pp. 47–58 Read article
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Probable Causes of Cracks on selected Buildings at Akrowa in Afigya Kwabre District, Ghana
Abstract: This work evaluated the nature of the foundation soils and cracks on twelve representative buildings at Akrowa, in the Afigya Kwabre District near Kumasi in Ghana. Age, material used whether clay/concrete, dimensions of cracks on the buildings and tests for geotechnical parameters of foundation soils such as moisture content, bulk density, specific gravity, particle size distribution, Atterberg limit and direct shear were carried out on soils from four pits dug …
Published in Journal of Geotechnical Engineering · Vol. 10, Issue 3, 2023 · pp. 29–39 Read article
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Wear Characteristics of Aluminium-Graphite Composites Produced by Stir Casting Technique
Abstract: Metal matrix composites (MMCs) are finding more applications due to their significantly improved properties such as high specific strength, high specific modulus, good damping capacity and good wear resistance compared to unreinforced alloys. In recent years, there has been an increasing interest in composites containing low density and low cost reinforcements. Graphite is one of the most suitable and low density reinforcement available for making light-weight and wear resistant parts …
Published in Journal of Materials & Metallurgical Engineering · Vol. 4, Issue 3, 2014 · pp. 13–20 Read article
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Chemical Synthesis of Zinc Oxide Nanoparticles and Characterization
Abstract: Chemical precipitation method was followed to synthesize zinc oxide nanoparticles. Zinc acetate and ethylene glycol were used in the preparation, and polyvinyl alcohol was also used along with zinc acetate to control the size and morphology. The precipitated particles were subjected to oxidation. The ZnO nanoparticles were characterized by analytical methods like XRD, FTIR, DLS, AFM, SEM and TEM. ZnO nanoparticles had crystal-like structures with size range of 6.17 to …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 2, 2013 · pp. 14–20 Read article
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Dependence of Adhesion Strength of Plasma Spray on Coating Surface Properties
Abstract: It is well known that thermal plasma spray coatings have diversified utilizations, but not vividly in use, mainly because of high cost of spray grade powder, for development of thick coating > 50 µm on metal substrates. Present investigation aims at depositing plasma spray coating on metals using low-cost/waste materials. A mixture of fly-ash + 20 weight percent of Quartz + 20 weight percent of illmenite is used for coating …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 57–64 Read article
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Recovery of Iron Values from Iron Ore Slimes using Reagents
Abstract: Mining wastes include waste generated during the extraction, beneficiation or processing of minerals like iron ore fines, slimes and tailings. Approximately 10–20% of the raw material is discarded as slimes in to slime ponds/tailing dams. Recovery of iron values from slimes result in economic benefit by utilization of waste as a resource and minimizes the threat to the environment. The iron ore slime is generally considered as waste due to …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 3, 2016 · pp. 32–43 Read article
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Preparation and Characterization of Multifunctional Ferrite Nanoparticles for Photocatalytic Applications
Abstract: Ferrite is having both electrical and magnetic properties. Now a days it has importance as a technological material. A review of ferrite study regarding science and technology of ferrite by different scientists is presented in this paper. The history and applications of ferrites are explained by various illustrations. It gives an overview of ferrites as a nano particle. It presents a broad overview of ferrite research, from bulk to nanoscale …
Published in Journal of Materials & Metallurgical Engineering · Vol. 11, Issue 2, 2021 · pp. 38–42 Read article
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Fabrication of AA5182-Semis for Precise Components
Abstract: Al4.5MgMn alloy is known to show an excellent physical and mechanical properties as well as manufacturing and fabrication ease as semis, suitable for making precise components like hull of the light weight vehicles and seamless tubes. Present work has tried to describe the development of microstructure and texture of an industrial tandem hot rolled Al4.5MgMn alloy sheet after laboratory cold rolling and annealing. Crystallographic orientation dependent strengthening rate has been …
Published in Journal of Materials & Metallurgical Engineering · Vol. 11, Issue 3, 2021 · pp. 21–32 Read article
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The advanced bioceramics production using process of vibroturbulization
Abstract: Currently, bioceramics are widely used in medicine as dental and bone implants. Surgical bioceramics are used regularly. Joint replacements are usually coated with bioceramics materials to reduce wear and tear and inflammation. Pacemakers, kidney dialysis equipment, and respirators are more instances of bioceramics being used in the medical field. The production process of bioceramics consists of the following four main steps: preparation of powder with a grain size of not …
Published in Journal of Materials & Metallurgical Engineering · Vol. 12, Issue 2, 2022 · pp. 10–13 Read article
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Distribution Power Loss Minimization by Network Reconfiguration and DG Placement
Abstract: AbstractThe paper presents an efficient algorithm for network reconfiguration associated with DG allocation to minimize real power losses in radial distribution networks. Selective Particle Swarm Optimization algorithm (SPSO) is used to find new tie switches. Allocation of DG units has been done by new analytical approach. The proposed analytical method for optimal DG placement is developed based on a new mathematical formulation. DG type-I is used to solve the problem. …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 1, 2018 · pp. 8–19 Read article
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Application of Evolutionary Techniques for Controller Design of Inverted Pendulum
Abstract: AbstractInverted pendulum is the typical experiment platform for the study of control theories. It is an example of a nonlinear system for which stability becomes the necessary feature and also hard to achieve. The mechanism of a PID controller is employed to demonstrate the projected controller and controller is designed for acceleration as well as angle control. This paper emphasizes on the comparison between conventional PID, genetic algorithm (GA) and …
Published in Journal of Microelectronics and Solid State Devices · Vol. 6, Issue 3, 2019 · pp. 1–10 Read article