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1508 articles for “surface”
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Investigation on Torque and Thrust Forces in Radial Drilling of Copper Alloys
Abstract: As a part of research over improvement of machining process; cutting forces, metal removal rate (MRR) and surface finish on mechanical elements has become quite significant in the operational and aesthetical point of view. To enhance accuracy and precision by adopting energy saving techniques, manufacturing firms are adopting automated systems in order to achieve manufacturing excellence. In the present work, the effect of various process parameters like spindle speed, feed, …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 2, 2016 · pp. 6–19 Read article
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Study of the Effect of Cycle Time of Plasma Nitriding on the Service Life of AISI H-13 Tool Steel Die
Abstract: AISI H-13 tool steel is widely used as a hot-forging die for various automotive components. Usually, to increase the die life, the dies are subjected to additional surface treatment process such as carburizing, gas nitriding, salt bath nitriding, plasma nitriding, etc. The case depth is an important parameter in surface treatment process. In this work, AISI H-13 tool steel hot-forging dies are subjected to plasma nitriding. The nitriding time cycles …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 169–177 Read article
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Chemical Synthesis, Spectral Characterization and Electrical Conductivity Behavior of Poly(2-Methoxyaniline-Co-2-Chloroaniline) and its CuO Nanocomposite and Polypropylene Glycol Blend
Abstract: AbstractCopolymerization of 2-chloro aniline and 2-methoxy aniline was achieved chemically by oxidative polymerization technique using ammonium persulphate as the oxidizing agent in acidic medium in the presence of sodium lauryl sulphate, an anionic surfactant. Copolymerization was also carried out in the absence of the surfactant to study the effect of surfactant on the thermal stability and electrical conductivity. The copolymer composite with CuO nano particles and blend with poly propylene …
Published in Journal of Polymer & Composites · Vol. 6, Issue 3, 2018 · pp. 1–13 Read article
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Comprehensive Evaluation of Abrasive Water Jet Machining of Fiber Reinforced Polymers
Abstract: The machining process of Carbon Fiber Reinforced Polymers is significant and the researchers are continually working to achieve the better machining qualities. There are numerous issues with the machining abilities of traditional machining techniques for fiber reinforced polymers because of heterogeneous and anisotropic properties of FRP materials. Advanced manufacturing processes such as laser beam, ultrasonic, EDM, water jet and abrasive water jet machining are the alternatives to the conventional making …
Published in Journal of Polymer & Composites · Vol. 7, Issue 1, 2019 · pp. 7–16 Read article
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Experimental Studies on the Passive Capillary Flow of Non-aqueous Working Liquids in PMMA Microfluidic Devices of Rectangular Cross-Sections
Abstract: The polymethylmethacrylate (PMMA) microfluidic devices are fabricated by the maskless lithography, hot embossing lithography and direct bonding technique. The effects of liquid viscosity, surface wettability and channel aspect ratio on the surface-driven capillary flow of non-aqueous working liquids are studied in the fabricated PMMA microfluidic devices. The working liquids are ethylene glycol, isopropyl alcohol (IPA) and ethanol. These experimental studies will be useful to manipulate different non-aqueous working liquids inside …
Published in Journal of Polymer & Composites · Vol. 5, Issue 2, 2017 · pp. 29–33 Read article
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Effect of Shock Waves on the Hardness of Graphene Reinforced Aluminium Composites
Abstract: The advantageous properties of Aluminium metal components have proved their suitability in the field of aerospace industry, naval, sports, and other structural applications. Its disadvantages like high wear rate, less hardness limits its application for some special applications. Graphene is an allotropic form of carbon which exhibits high tensile strength, better co-efficient of friction and an easily derivable material from the carbon which is abundantly available in nature. Reinforcement of …
Published in Journal of Polymer & Composites · Vol. 8, Issue 1, 2020 · pp. 32–38 Read article
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Relating IFT with Oil Recovery with Special Reference to Bhogpara Porous Media of Upper Assam Basin
Abstract: The present study examines the effect of surfactant flooding through the porous media of Bhogpara core sample for enhanced oil recovery (EOR). The work will try to examine the interfacial tension (IFT) of the aqueous phase in which a surfactant is added and the oleic phase, which is the paraffin oil. The critical micelle concentration (CMC) was noted at the minimum IFT. The highlight of this work is that with …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 1, 2015 · pp. 1–8 Read article
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Development of Intermittent Gas Lift Optimum Time Module Using Automatic Pneumatic System
Abstract: Artificial lift technique is used to bring hydrocarbons to the surface when they cannot come to the surface on their own. Gas lift is an artificial lift technique which is classified into continuous and intermittent gas lifts. Continuous gas lift is used when the hydrocarbon fills into the wellbore continuously but is not able to come to the surface while intermittent gas lift is used when the fluid flow into …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 40–50 Read article
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Breathing prediction of fracture deviated wellbore through flooding mechanism
Abstract: Wellbore breathing is a common occurrence during drilling operations, but the down hole mechanism and how it manifests itself in surface and subsurface processes, is not well understood. It often result in a drilling fluid gain at surface and are misidentified as a kick, resulting in unneeded shut in periods and associated non-productive time (NPT). Further, misidentification of wellbore breathing as underbalance often results in increases in mud weight, which …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 2, 2019 · pp. 5–13 Read article
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Analysis and Improvement in Tribological Properties of Coated HSS Tool
Abstract: The use of low friction coatings like TiAlN and AlCrN is to improve the tribological properties of tools for metal cutting, forming and machine elements. It is strong scientific interest to conduct fundamental tribological research on the materials that exhibits low friction and can be used for surface coating on surfaces to rub against with reduced friction and wear. Parameters influence the quality of the products in turning process. The …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 5, Issue 1, 2018 · pp. 23–36 Read article
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Numerical Analysis of Thermal Performance of Cylindrical Perforated Pin Fins for Aligned Arrangement
Abstract: Present paper investigates the thermal characteristics pertaining to laminar forced convection heat transfer enhancement achieved in a flat surface mounted with cylindrical perforated pin fins in a rectangular channel having a area of cross section 280 x150 mm2.The analysis was done for the range of angle of perforated holes from 00 to 600 for a constant value of Reynolds Number and fixed fin spacing of 40 mm using air as …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 7, Issue 1, 2020 · pp. 8–16 Read article
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Short Review on Lubrication Coatings and Reduction in Friction
Abstract: Specialized Epoxy coatings with a low coefficient of friction can be applied to metal, glass, and plastic substrates. They produce long-lasting, slick surfaces that prevent wear and abrasion. These friction compounds are corrosion-resistant, chemically inert, and simple to maintain. Products are made to cut down on repair costs and increase element life. The coating is just a protective layer that is put to an object's surface, also known as the …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 3, 2021 · pp. 28–32 Read article
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Frictional properties of thermally processed electroless nickel coatings
Abstract: Electroless plating was used to deposit the nickel (Ni) coatings on the carbon steel substrate, both with and without incorporated cubic boron nitride (c-BN) nanoparticles. Coatings were put through tests under both heat-treated and as-deposited conditions. In addition to measuring hardness and roughness, the coating structure was characterized. Under dry and water lubricated contact circumstances, the friction characteristics of bronze, used as the counter-body material, were investigated. coefficients of friction …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 9, Issue 2, 2022 · pp. 27–31 Read article
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Identification of Groundwater Potential Zones using Remote Sensing and GIS: a case study of watershed, Maharashtra, India.
Abstract: Water is one of the vital source for all livings beings for their survival. Water is needed for many activities like agriculture, industries, domestic, drinking and many other purposes. If we consider the earth as a whole, water covers the major portion of the earth. But among the total water on the earth, fresh water reserves are very less that is only 2.5%. Also the water availability is unevenly distributed …
Published in Journal of Water Resource Engineering and Management · Vol. 5, Issue 1, 2018 · pp. 14–24 Read article
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Geo-chemical Analysis of Arsenic in Medium Aquifers and Its Relation with Physical Parameters: A Study of Ballia District, India
Abstract: The main objective of this paper is to assess the spatial variation of arsenic (As) in medium aquifer and to relate it with surface elevation and slope generated using Shuttle Radar Topography Mission (SRTM) satellite data and water table. Water samples were collected in both pre- and post-monsoon season in 2011. The analysis of water samples for As were carried out by using atomic absorption spectrophotometer (AAS). Total 33 water …
Published in Journal of Water Resource Engineering and Management · Vol. 2, Issue 1, 2015 · pp. 38–50 Read article
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Rainfall Runoff Modeling Using SCS-CN Method: A GIS Based Case Study of Pawana Watershed
Abstract: In a country over 125 million, we are proudly an agricultural based economy, wherein 51% of population is indulged in any business related to somehow with agriculture. Of course, we still are in a developing stage as far as methodologies or their implementation is concerned. But surely somewhere we have started focusing on modern techniques and strategies to improve pattern, productivity, profit and all. The two vital natural resources required …
Published in Journal of Water Resource Engineering and Management · Vol. 3, Issue 3, 2016 · pp. 50–58 Read article
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Review an analysis of Fluid Flow and its Dynamics Study
Abstract: Fluid dynamics is the study of liquid and gas flow, usually on and near solid surfaces. For instance, airflow over an aeroplane wing or over the surface of an automobile can be studied using fluid dynamics. Additionally, it can be utilised in ship design to speed up how quickly they move through water.To understand fluid dynamics, scientists employ both mathematical models and simulations as well as experiments. In a confined …
Published in Recent Trends in Fluid Mechanics · Vol. 9, Issue 2, 2022 · pp. 50–53 Read article
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Development and Investigation of Minimum Power Non-contact Swirl Vane Gripper
Abstract: The Swirl vane gripper is a new non-contact gripper, which uses negative pressure created by the air swirling flow to create an upward lifting force. This upward force can be used to lift an object, which is placed underneath the gripper. In comparison with other non-contact grippers, this gripper is electrically actuated (rather than pneumatically) and hence require less power to generate same lifting force as produced by other grippers. …
Published in Trends in Electrical Engineering · Vol. 8, Issue 3, 2018 · pp. 28–34 Read article
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Double-Integral Type of Indirect Sliding Mode Controller for Power Buck Converters fed with Constant Power Loads
Abstract: This article signifies the robust nonlinear technique to solve instability issues of dc-dc buck power converter connected with constant power load. When power electronic converter operates under tightly regulated condition will have constant power behavior at its input terminals. This CPL will exhibit NII (negative incremental impedance) behavior, it is the main root cause of instability problems in the system. These instabilities can be eliminated by using the nonlinear controller …
Published in Trends in Electrical Engineering · Vol. 13, Issue 2, 2023 · pp. 69–78 Read article
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Experimental Investigations on Concentric Flow Dry Ultrasonic Assisted Wire Electric Discharge Machining (CFDUAWEDM) Using Regression Analysis
Abstract: This paper presents an application of concentric flow mode of dry dielectric (compressed air) supply for ultrasonic assisted wire electric discharge machining process (CFDUAWEDM). The concentric flow mode of dielectric supply using ultrasonic assistance is expected to offers improved surface integrity, environmental and operator friendliness during wire electric discharge machining (WEDM) process. Experimental set up was developed wherein, the ultrasonic vibration was applied to the electrode wire using an ultrasonic …
Published in Trends in Machine design · Vol. 3, Issue 2, 2016 · pp. 33–43 Read article