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1510 articles for “surface”
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Investigation of Surface Electromyography Signal for an Upper Limb Amputee
Abstract: Surface electromyography (SEMG) is a method to measure the muscle activity of the skin. Sensors placed on the skin detect the electrical current or signal generated by active muscles. Lot of the research has focuses on the detection of signal from upper limb amputee with activity of triceps and biceps muscles. Our main aim of this study is to process the acquired signal from the different muscles of the shoulder …
Published in Current Trends in Signal Processing · Vol. 7, Issue 1, 2017 · pp. 19–28 Read article
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HEAT TRANSFER ENHANCEMENT BY USING DIMPLE SURFACE
Abstract: Now a day to improve or to increase efficiency of Heat transfer medium to another way is very difficult to obtain this conditions and this data and method we study then we conclude that we are study some different method. And after we study some references and valid data then we study the dimple surfaces in which the dimple is nothing but “hole” like or depression like structure in which …
Published in Journal of Automobile Engineering and Applications · Vol. 5, Issue 1, 2018 · pp. 1–5 Read article
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Sonophotocatalytic Degradation of Scarlet Red dye using Fe-Bi2O3 Catalyst and its Process Optimization by Response Surface Methodology
Abstract: The catalyst Fe-Bi2O3 was synthesized by ultrasound irradiation and used as a catalyst for the sonophotocatalytic degradation of scarlet red dye. The synthesized catalyst were characterized by SEM, XRD and DRS. SEM image reveals the formation of nanorod structure of the catalyst, XRD reveals the size of the catalysts were in nano range and DRS shows the blue shift in optical absorption for the Fe-Bi2O3 catalyst. The Fe-Bi2O3 was identified …
Published in Journal of Catalyst & Catalysis · Vol. 3, Issue 2, 2016 · pp. 14–32 Read article
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A Sliding Mode Control with a PID Sliding Surface for Power Output Maximizing of a Wind Turbine
Abstract: The wind energy has many advantages, it does not pollute and it is an inexhaustible source. However, thecost of this energy is still too high to compete with traditional fossil fuels, especially on the less windy sites.The performance of a wind turbine depends mainly on three parameters: the power of the wind, the powercurve of the turbine and the generator’s ability to respond to the wind fluctuations. This article proposes …
Published in Journal of Control & Instrumentation · Vol. 1, Issue 1-2-3, 2011 · pp. 12–18 Read article
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Prediction of Bead Geometry Parameters using Response Surface Methodology and Finite Element Analysis of Gas Metal Arc Welded Joints of Aluminum Alloy
Abstract: Gas Metal Arc welding process aims to produce welded joint with the excellent mechanical properties with minimum distortion and desired weld bead parameters. In welding, input process parameters decides the quality of weld joint. Manufacturer are facing problem of controlling the process input parameters to obtain a good welded joint with the bead geometry. Prediction of weld bead geometry play very important role in determining the quality of weld. This …
Published in Journal of Experimental & Applied Mechanics · Vol. 9, Issue 2, 2018 · pp. 23–35 Read article
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Comprehensive Analysis and Investigation of Heat Treated AISI 4130 Steel on Surface Roughness in Turning Operation
Abstract: Now a days Heat treatment is one of the most important operations which alters the properties of the material such as hardness, strength, toughness, ductility, corrosion resistance, etc., and these are used according to the required material properties. These treatments are involving heating and cooling a specimen normally to extreme temperatures. These major processes are annealing, normalizing, hardening, case hardening, etc. In every process, the properties vary accordingly. Turning is …
Published in Journal of Experimental & Applied Mechanics · Vol. 13, Issue 3, 2022 · pp. 28–38 Read article
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Near-Surface Seismic Refraction Tomography; a case study for geotechnical application
Abstract: Usually, among geophysical techniques, seismic refraction methods are used to investigate near surface geology for engineering purposes. In these study physical parameters, longitudinal seismic wave velocities were used to characterize the shallow subsurface layers for geotechnical application. The physical response of subsurface materials varies as the structure, porosity, fluid saturation, composition and tie-up vary. These variations primarily viewed in the first arrival time of seismic waves. With the necessary steps, …
Published in Journal of Geotechnical Engineering · Vol. 6, Issue 2, 2019 · pp. 18–26 Read article
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Influence of wall friction on Active Earth Pressure in Model Test
Abstract: Earth pressure theories occupy a paramount position in the field of geotechnical engineering. The knowledge of active earth pressure under static condition is essential in designing a retaining wall as the damage to such retaining structures may lead to disastrous failure. A retaining wall helps in maintaining the ground surface at different elevations on either side of it. Without such a structure, the soil at higher elevation would tend to …
Published in Journal of Geotechnical Engineering · Vol. 8, Issue 1, 2021 · pp. 12–19 Read article
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Evaluation of Critical Crack Position on the Curved Surface under Mechanical Load: FEA Approach
Abstract: Abstract: Influence of initial crack position on the stress distribution around the crack tip is always taken into account for the failure analysis of metallic structures. Evaluation of Stress Intensity Factor for cracks of various orientations was carried out using Finite Element Analysis technique. These Stress Intensity Factors were used to calculate energy release rate for the various orientations. Next, thus obtained energy values have been compared with energy values …
Published in Journal of Instrumentation Technology & Innovations · Vol. 9, Issue 1, 2019 · pp. 1–6 Read article
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Improvement of Mild Steel Surface Properties by Fly-ash + Quartz + Illmenite Composite Coating
Abstract: Plasma spray of fly-ash composite gives a stable improvement of surface properties for industrially used materials/equipments, which has become a major technological research area encompassing studies in a broad range from medical field, chemical field to ceramic field. In the present investigation, coatings are developed on mild steel substrates using fly-ash + quartz + illmenite composite (in a weight percentage ratio of 60:20:20) at various plasma torch input power levels …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 125–131 Read article
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Pore Distributions in Porous Anodic Aluminum Oxide (PAAO) Surfaces of Pure and Commercial Aluminum Substrates
Abstract: Porous anodic aluminum oxide (PAAO) surfaces were developed on pure aluminum (PA) and commercial aluminum (CA) substrates by anodization as a function of voltage in phosphoric acid bath at 278 K and were analyzed by scanning electron microscopy. The interpore distances were plotted in the form of frequency histograms to examine pore-ordering characteristics. Self-ordered porous structures have been obtained at 200 and 160 V for PA and CA substrates respectively …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 143–153 Read article
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Response Surface Modelling of Energy Harvester
Abstract: This paper explains the application of response surface methodology on piezoelectric circular disc transducer by considering the three independent variables such as voltage constant, applied force and the total thickness of circular transducer. The dependent variables are voltage and power. For optimizing the voltage and power through energy harvester parameters such as voltage constant, total thickness of transducer plays a main role. The maximum voltage is recorded as 0.161 V …
Published in Journal of Microelectronics and Solid State Devices · Vol. 4, Issue 1, 2017 · pp. 1–6 Read article
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Experimental Studies to Record the Lithographically Fabricated Microstructures by Surface Profilometry and Scanning Electron Microscopy for Microfluidic Laboratory-on-a-Chip Systems
Abstract: In this research paper, the poly(methyl methacrylate) (PMMA) microfluidic laboratory-on-a-chip system is fabricated in the cleanroom laboratory by maskless lithography, hot embossing lithography and direct bonding technique. The microstructures of the lab-on-a-chip system are measured by surface stylus profilometer. Also, the images of microstructures of lab-on-a-chip system are captured by using scanning electron microscopy (SEM). This fabricated lab-on-a-chip system is useful in bioengineering applications.
Published in Journal of Polymer & Composites · Vol. 4, Issue 1, 2016 · pp. 27–36 Read article
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Effect of Surface Texture on Pressure Distribution in Hydrodynamic Journal Bearing
Abstract: This paper presents an analysis of the pressure distribution of hydrodynamic journal bearing for different surface texture, velocity variation and load variation. The performance of journal bearing depends on speed, load carrying capacity, viscosity of oil and temperature condition. Therefore, the effects of these parameters on the performance of journal bearing, on the pressure distribution and on the load carrying capacity have been analyzed on the basis of number of …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 3, Issue 2, 2016 · pp. 11–18 Read article
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Optimization Study by Response Surface Methodology and Artificial Neural Network on the Culture Parameters of Citric Acid Bioproduction from Sweet Potato Peels
Abstract: In the cause of this research work, two steps enzymatic hydrolysis of sweet potato peel was carried out respectively. The effect of α-amylase dose, reaction time, and reaction temperature and biomass weight on glucose concentration was investigated carefully. The response surface methodology (REM) predicted the highest reducing sugar concentration at liquefaction to be 74 g/L, at the following optimized conditions; temperature of 45°C, α-amylase dose 0.7 %v/v, biomass weight 22.345 …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 1, 2022 · pp. 30–38 Read article
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A Study of the Effect of Sodium Hydroxide and Sodium Lauryl Sulfate Surface Treatments on Natural Fibers
Abstract: Due to its accessibility, environmental friendliness, renewability, CO2-neutrality, flexibility, low density, and low cost, natural fibre (NF) can have a significant impact on the area of fibre reinforced polymer composite (FRPC) as a reinforcing material. Banana fiber (BF)/calotropis gigantea fiber (CGF) could be a potential candidate for synthetic FRPC replacement. Plant derive banana and calotropis gigantea fibers are valuable NFs that are abundantly available in Bangladesh. The purpose of this …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 2, 2022 · pp. 1–11 Read article
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Assessment of Major Ion Chemistry in Ground Water and Surface Water of Kailana Lake Area of Jodhpur (Rajasthan)
Abstract: The aim of the present study was the assessment of the major ion chemistry of ground water and surface water of Kailana lake area, Jodhpur (Rajasthan). Various parameters of water quality were analyzed such as pH, electric conductivity (EC), total dissolved solids (TDS), bicarbonate, silca, phosphate, sulphate, chloride, fluoride, sodium, potassium, calcium, magnesium, and heavy metals (copper, lead, manganese, nickel and zinc). Piper diagram for ground water during pre-monsoon and …
Published in Journal of Water Resource Engineering and Management · Vol. 3, Issue 2, 2016 · pp. 42–56 Read article
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Heat Transfer and Exergy Analysis of Methane-Air Flame Impinging on Plane Surfaces
Abstract: Exergy and heat flow have been numerically investigated for flame impinging on flat circular plates. The maximum work available when the system is brought to thermodynamic equilibrium state with its surrounding is known as the exergy of a system. This state of equilibrium of the system depends on the pressure, temperature, and composition of environment. Efficiency based on exergy is otherwise known as the second-law efficiency which measures the usefulness …
Published in Recent Trends in Fluid Mechanics · Vol. 9, Issue 1, 2022 · pp. 13–24 Read article
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Optimization of Surface Roughness and Material Removal Rate for Dry Turning Operation in CNC Lathe UsingTaguchi Method
Abstract: In this work the cutting of AISI 1045 material will be carried out using CNC lathe followed by Taguchi methodology. Taguchi method is usedto formulate the experimental layout. A Taguchi L9 design of experiment (DOE) will be applied and the analysis ofvariance (ANOVA) will carried out to determine the effect of process parameters on process performance. To analysethe effect of each parameter on the machining characteristics and to predict the …
Published in Trends in Machine design · Vol. 5, Issue 1, 2018 · pp. 46–53 Read article
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Parametric Optimization of boring process by alternate tooling head to improve productivity of GG25 cylinder liner using response surface methodology
Abstract: The manufacturing process are the heart of any industries. The process are getting renewed day by day to achieve a simple goal of efficiency. The paper states about the one of manufacturing process namely boring operation in material removal process and its optimization to increase the production on going in the industry. The boring process is used in here to enlarge the bore of cylinder liner which are also precision …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 27–30 Read article