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175 articles for “Homogeneity”
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Interference of Components in Metallic Diffusion
Abstract: Eight different pairs of metals which diffuse in each other in a solid state composition and make a homogenous or heterogeneous mixture are considered for deeper understanding of diffusion phenomenon, w.r.t. direction of diffusion, etc. Further the authors interpret which factors are responsible for the metal and/or more specifically which metal atom will be active in the diffusion process. The analysis evidenced number of breakage of bonds in the substrate …
Published in Journal of Materials & Metallurgical Engineering · Vol. 4, Issue 1, 2014 · pp. 23–30 Read article
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ISOLATION OF CELLULOSIC NANOPARTICLES FROM COIR FIBRE FOR THE PREPARATION OF NATURAL RUBBER COMPOSITES
Abstract: Coir fibre and natural rubber are renewable and sustainable agro-resources that can be harnessed for the production of finished rubber articles on industrial scale. In this research, coir fibres extracted from coconut husk were subjected to alkaline-peroxide delignification. The delignified fibres were further transformed into coir fibre cellulosic nanoparticles (CFNP) with particle size distribution of 68–311 nm and a polydispersity index (PDI) of 0.371 through friction homogenization. These particles were …
Published in Journal of Polymer & Composites · Vol. 6, Issue 1, 2018 · pp. 9–16 Read article
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Reinforcement of Natural Rubber with Sisal/Sugarcane Hybrid Nanofiller
Abstract: AbstractNatural fibres are attracting attention from researchers for the manufacture of polymer composites due to their eco-friendly nature and sustainability. The hybrid effects of Sisal/sugarcane Bagasse based nanofiller on the physico-mechanical properties of natural rubber matrix have been investigated. In the experiment, nanofiller were prepared from alkaline-peroxide treated sisal fibre and sugarcane bagasse through shear and friction homogenization. The nanofiller were hybridized using a single ordinate loading of 30 parts …
Published in Journal of Polymer & Composites · Vol. 6, Issue 3, 2018 · pp. 35–42 Read article
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Sugarcane Bagasse: A Promising Source for the Production of Nanocellulose
Abstract: AbstractThis paper reviews the recent studies of extraction of nanocellulose (cellulose nanofibers, nanocrystals, nanowhiskers, nanocrystalline cellulose, etc.) from sugarcane bagasse as agro-waste by different extraction methods such as acid-hydrolysis, alkaline-hydrolysis, enzymatic-hydrolysis, sonication, high-pressure homogenization, and shear ultrafine friction grinding, disk-grinder, including potential applications. Keywords: Sugarcane bagasse, nanocellulose, nanofibres, nanocrystals, acid-hydrolysis
Published in Journal of Polymer & Composites · Vol. 2, Issue 3, 2023 · pp. 23–27 Read article
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Thermo-Mechanical Properties of Unsaturated Polyester Reinforced with Coconut and Snail Shells
Abstract: AbstractParticulate-filled polymer composites are becoming quite attractive because of their low cost and wide applications. In this study, the effects of coconut shell (CS) and snail shell (SS) volume fractions (5–50 vol. %) on the thermal and mechanical properties of unsaturated polyester resin (UPR) composite are investigated. The results show that tensile strength, elongation at break, flexural strength, and hardness of the composite increase as filler concentration increases. However, impact …
Published in Journal of Polymer & Composites · Vol. 2, Issue 2, 2023 · pp. 44–56 Read article
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Investigation of Dielectric Properties of a Novel Hybrid Polymer Composite using Industrial and Bio-waste
Abstract: AbstractFly ash is an industrial waste which creates environmental problems. Coir dust is a byproduct of coir fiber production. Novel low-cost hybrid polymer composite using coir dust and fly ash particle reinforcement is prepared. Investigation of dielectric behavior of this hybrid polymer composite proves its efficacy as a high-value marketable product. Individual compacts of coir dust, fly ash, coir dust and fly ash are also prepared for comparison with the …
Published in Journal of Polymer & Composites · Vol. 1, Issue 1, 2013 · pp. 22–27 Read article
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Fabrication and Characterization of Magnesium Matrix Nanocomposites Reinforced with Multiwall Carbon Nanotubes
Abstract: Multiwall Carbon Nanotubes (MWCNTs)-reinforced magnesium nanocomposites were fabricated through powder metallurgy route and then hot extruded as secondary process. CNTs were added by 0.5, 1 and 1.5 wt% with magnesium powders and ball milled to obtain a homogeneous mixture. The effect on mechanical properties of Mg nanocomposites due to the reinforcement of MWCNTs was investigated. The effect of mixing through high-energy ball milling, sintering temperature and extrusion process on the …
Published in Journal of Polymer & Composites · Vol. 1, Issue 1, 2013 · pp. 17–21 Read article
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Tribological Behaviour of En 31 Bearing Steel Against Altin, Alcrn and Crn Coated High Speed Steel
Abstract: Mechanical parts like bearing in modern machining systems are often subjected to wear and friction causing high heat generation at the interacting zones leading to reduced lifecycle and increased energy consumption of machinery. In this investigation friction and wear characteristics of bearing material EN31 steel against the CrN, AlCrN and AlTiN deposited on high speed steel as counter material is presented. Tribological tests are conducted on a pin on disc …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 97–108 Read article
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THE THICKNESS EFFECT ON TiO 2 THIN FILMS FABRICATED BY USING SOL- GEL DIP COATING METHOD
Abstract: Titanium dioxide films were prepared by sol-gel dip-coating technique onto glass substrates at room temperature. The study focuses on the structural pattern of TiO 2 films which were dominated by the parameters such as the film thickness, pH, annealing temperature and number of dipping layers. At first the dipping speed is optimized with the refractive index of the film along with the number of dipping layers. Then the film deposited …
Published in Journal of Polymer & Composites · Vol. 12, Issue 1, 2024 · pp. 1–10 Read article
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Analysis and Application of New Acid Fracturing Technology for Carbonate Reservoir in Offshore Deep Well with High Temperature
Abstract: Acid fracturing is the key production and stimulation technology for the oil-gas reservoirs. This paper developed Loss Control Acid and Divert Acid System used in the Bohai Bay Nan-pu oilfield Ordovician carbonate reservoir, which has the problems of deep reservoir burial depth, high temperature, well developed fracture and cavern and high anisotropy. This formation used to be acid fractured with gelled acid and it responded poorly. It also has a …
Published in Journal of Petroleum Engineering & Technology · Vol. 6, Issue 2, 2016 · pp. 50–62 Read article
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Investigation of the Effects of Solpawa SBR-X TM Doses on Total Petroleum Hydrocarbon in Loam Soil at Different Depths
Abstract: Laboratory trials of environmental remediation products bring the hope of inventing such products to reality for many of today’s intractable environmental pollution conditions, paving the way for the field trials and subsequent large-scale field application. This laboratory study was conducted as the first phase of a 2-tiered adaptive trials of Solpawa® Bioremediation System (Solpawa-SBX) funded by the Nigerian Content Development and Monitoring Board (NCDMB). The study investigated the effectiveness of …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 1, 2023 · pp. 64–72 Read article
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Experimental Investigation of Self-Compacting Concrete Using Coir Fiber
Abstract: Concrete is the construction material widely used throughout the world. Construction materials used in the industry should be friendly with the environment during their usage. Self-compacting concrete (SCC) is an innovative concrete that does not require vibration for placing and compaction. It is able to flow under its own weight, completely filling formwork and achieving full compaction, even in the presence of congested reinforcement. The hardened concrete is dense, homogenous …
Published in Journal of Structural Engineering and Management · Vol. 2, Issue 1, 2015 · pp. 6–12 Read article
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Morphological and Dielectric Relaxation Responses of Polymer Stabilized Ferroelectric Liquid Crystal Composite Films
Abstract: Polymer-stabilized ferroelectric liquid crystal (GH-PSFLC) composite films have been prepared by polymerization-induced phase separation (PIPS) process as a function of polymer concentration. Epoxy polymer was homogeneously dispersed into FLC host matrix to create fibril network in the composite films. Twisted fibril-like network was observed through polarizing optical microscope through transmission mode. Dielectric relaxation spectroscopy of these composites shows that real part of permittivity decreases with polymer concentration. Goldstone relaxation mode …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 2, Issue 2, 2015 · pp. 8–12 Read article
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Comparative Analysis of MOSFET, CNTFET and NWFET for High Performance VLSI Circuit Design: A Review
Abstract: Nanowires are inimitable materials for considering phenomenon in nanoscale regime. Nanowires development exhibits ample of applications by controlling their, structure, composition as well as their electrical properties. This paper review diverse types of nanowires, nanowire field-effect transistor (NWFET) structure and their comparison with novel devices. Firstly, this paper describes different types of nanowires and nanowire heterostructure that shows nanowire heterostructures eliminates various factors that limit the performance of homogeneous nanowire …
Published in Journal of VLSI Design Tools and Technology · Vol. 6, Issue 2, 2016 · pp. 19–32 Read article
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Effect of Water Table Position on the Stability of Tunnel
Abstract: Tunnel is an underground structure used to convey the traffic. Construction of a tunnel in rock is a difficult task. In instances where tunnels are situated at shallow depths, the stability of the tunnel and its lining is notably affected by the adjacent surcharge loadings resulting from new building constructions or excessive loads on the ground surface. Stability of the tunnel crest also depends on the position of the water …
Published in Journal of Water Resource Engineering and Management · Vol. 10, Issue 3, 2023 · pp. 6–11 Read article
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Stable control of the motion of gas bubbles dissolved in a vibrating fluid in microgravity conditions
Abstract: Previous theoretical and experimental studies of the effect of vibration on gas bubbles, dissolved in a fluid, permitted to establish the localization and stable position of a “swarm” of gas bubbles at a certain level of fluid in the vessel corresponding to a certain frequency and vibration acceleration, aswell as to the volume of a swarm of gas bubbles. The control of a “swarm“ of gas bubbles in a fluid …
Published in Recent Trends in Fluid Mechanics · Vol. 8, Issue 1, 2021 · pp. 34–44 Read article
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Mechanism of Intensive Gas and Fluid Mixture in the Process of Vibroturbulization and Its Technological Applications
Abstract: Previously conducted experimental studies have established that in a certain narrow frequency range and upon reaching a certain value of the amplitude of water oscillations in a sealed vessel with above-water air shell, subjected to vertical vibration, a resonant phenomenon occurs, called “vibroturbulization”, leading to intensive mixing of media of different density. The studies carried out were purely experimental in nature and could not reveal the physicochemical mechanism of occurrence, …
Published in Recent Trends in Fluid Mechanics · Vol. 9, Issue 2, 2022 · pp. 21–34 Read article
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Stress Analysis and Deflection of Longitudinal Beam and Validate by using ANSYS
Abstract: This study investigates the deflection and stress distribution in a long, slender longitudinal beam of uniform rectangular cross section made of linear elastic material properties that are homogeneous and isotropic. The deflection of a longitudinal beam is essentially a three dimensional problem. An elastic stretching in one direction is accompanied by a compression in perpendicular directions. The beam is modeled under the action of three different loading conditions: vertical concentrated …
Published in Trends in Machine design · Vol. 7, Issue 1, 2020 · pp. 4–8 Read article
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Influence of Blending Technique on Surface Free Energy of Modified Asphalt Cement
Abstract: AbstractThe processing technique of modified asphalt cement in the laboratory is adopted by heating the asphalt cement in an oven to the required mixing temperature; then the additive is added and mixed for a target mixing time. It was felt that such technique allows more volatiles to evaporate and required high mixing temperature. In this work, asphalt cement of 44 penetration grade was gained from Dora refinery, south west of …
Published in Trends in Transport Engineering and Applications · Vol. 5, Issue 1, 2018 · pp. 22–31 Read article
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A Study on FWD Deflection Bowl Parameters for Structural Evaluation of Flexible Pavement
Abstract: The application of falling weight deflectometer is to evaluate structural condition of the pavement. The exercise of back calculation is required to identify the modulus of elasticity of existing in service pavement. The process of back calculation required in depth field experience for the input of range of modulus of elasticity of bituminous, granular and subgrade layer, and its required number of trials to find such matching moduli with the …
Published in Trends in Transport Engineering and Applications · Vol. 4, Issue 1, 2017 · pp. 48–55 Read article