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1372 articles for “DRA”
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OPTIMIZATING FUSION ZONE GRAIN SIZE, HARDNESS AND TENSILE STRENGTH OF MICRO PLASMA ARC WELDED TITANIUM ( Ti-6Al-4V) ALLOY USING GREY RELATIONAL ANALYSIS
Abstract: In the present work, Titanium (Ti-6Al-4V) alloy sheet of 0.5 mm thick is butt welded using Micro Plasma Arc Welding. Welding input parameters like peak current, base current, pulse rate and pulse width are considered and output responses like fusion zone grain size, hardness and ultimate tensile strength of the welded joint are considered. Taguchi L25 orthogonal matrix is adopted by considering four factors and five levels of weld input …
Published in Trends in Mechanical Engineering & Technology · Vol. 8, Issue 3, 2018 Read article
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Towards Curbing Energy Poverty in Sub-Saharan Africa through The Use of Solar Bike: A Case of Koupela, Burkina-Faso
Abstract: AbstractThe rate of energy poverty in Africa particularly in Sub-Sahara region is quite alarming and appealing. This anomaly has greatly affected industrialization processes in this region. Not only has electricity access remain an acute issue in Burkina Faso almost two centuries, but in addition, the accelerated consumption of fossil fuels is leading to drastic consequences manifested in the form (s) of impaired development for humans and nature. To encourage greater …
Published in Journal of Thermal Engineering and Applications · Vol. 7, Issue 1, 2020 · pp. 9–14 Read article
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Advanced Ceramic Matrix Composites in Rocket Nozzle
Abstract: In earlier days rocket nozzles were made up of monolithic ceramics, zirconium, and nimonic alloys. Though the materials have the capability to withstand enough temperature, they have the drawbacks such as manufacturing cost & time, strength to weight ratio.In order to cut the manufacturing cost & time, the strength to weight ratio and also to improve the capability to withstand high temperature, a composite material—C/SiC—shows enough required properties in the …
Published in Journal of Thermal Engineering and Applications · Vol. 2, Issue 3, 2015 · pp. 32–40 Read article
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Design and Implementation of a Photovoltaic High-intensity-discharge Street Lighting System Using MPPT Algorithms
Abstract: This dissertation presents a grid-tied (PV) high-intensity-discharge (HID) street lighting system. During daytime, the battery is charged by a PV panel. A single-ended primary inductance converter (SEPIC) is studied for maximum power point tracking (MPPT). Accuracy and high efficiency battery charging can be achieved under a wide range of PV panel voltage variation. At night, the solar energy stored in the battery is released to drive the street lights by …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 1, Issue 2, 2013 · pp. 1–8 Read article
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Cloud-Sensor Network Integration: Review
Abstract: Nowadays, wireless sensor networks have become a widespread entity in human life, it can be seen as one of the most essential technologies in 21st century in which sensors are placed in distributed manner to monitor physical and ecological environments such as temperature, pressure etc. WSNs have their own applications such as healthcare, military, environment monitoring, and manufacturing; but this technology is constrained by limited resources in terms of memory, …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 4, Issue 1, 2016 · pp. 17–24 Read article
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Analysis of an Evaporative Desiccant Cooling System
Abstract: With the drastic change in climatic conditions in recent years, demand for air conditioning is spreading all over the world. This causes a primary consumption of energy in high quantity. In order to provide the best indoor air quality and thermal comfort with minimum consumption of energy, the desiccant cooling system is one of the options in our daily life. In this work, a theoretical performance study has been done …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 2, Issue 2, 2015 · pp. 31–38 Read article
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Design of Ventilation and Air Conditioning for 50 Ton Bollard Pull Utility Tug Built for Indian Navy
Abstract: Abstract The current work deals with the design of ventilation and air conditioning for utility tug which is built for the Indian navy by HSL considering previously built values of the tug, which was approved. The main purpose of this project is to reckon the heat load calculations for air-conditioning and ventilation heat load calculations of the utility tug. The calculations were performed on the basis of some professional organizations …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 1, 2016 · pp. 23–31 Read article
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Analysis of Thermodynamic Behavior of a Turbulent Air Flow in a Rectangular Duct
Abstract: Abstract A numerical study of turbulent air flow in a rectangular duct with three plate and waved baffles was investigated. The governing equations, based on the model k-ε realizable used to describe the turbulence, are solved by the finite volume method with the use of the SIMPLE algorithm. The dynamic and thermal structure of the flow was analyzed by the presentation of several parameters, namely, the intensity of turbulence, reports …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 3, Issue 3, 2016 · pp. 14–23 Read article
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Another Look towards Analysis of Connecting Rod
Abstract: The car connecting rod is a high volume production and basic part. For the most partconnecting rods are fabricated utilizing carbon steel and as of late aluminum compounds arediscovering its application in connecting rod. Connecting rod is the interface between thepiston and the crank. What's more, is dependable to transmit the push and draw from thepiston pin to crank pin, in this manner converting the reciprocating movement of the piston …
Published in Trends in Machine design · Vol. 4, Issue 1, 2017 · pp. 7–11 Read article
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Design and Simulation of Compact Wideband Rectangular Dielectric Resonator Antenna using Double Metallic Strips for Ku-Band Applications
Abstract: An objective of the paper is to optimize the parameters, and simulation analysis of compact wideband rectangular dielectric resonator antenna (RDRA). In this paper, a compact wideband, rectangular dielectric resonator antenna is presented using relatively low dielectric constant material and using double microstrip patch. The rectangular DRA is fed with a modified stepped microstrip feed to ensure efficient coupling between the RDRA and the feeder. The performance of the proposed …
Published in Journal of Microwave Engineering and Technologies · Vol. 1, Issue 1, 2014 · pp. 11–20 Read article
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Review of Recovery Methods for Acetic Acid from Industrial Waste Streams by Reactive Distillation
Abstract: This paper addresses an industrially important problem of recovery of acetic acid from a wastewater streams via reactive distillation. The separation (or recovery) of organic residues from aqueous waste streams released from chemical and petrochemical industries is critical and indispensable from the points of view of pollution control and recovery of useful materials. The disposal of wastewaters containing most widely used industrial organic acids such as acetic acid, formic acid …
Published in Journal of Water Pollution & Purification Research · Vol. 1, Issue 2, 2014 · pp. 13–18 Read article
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3D Finite Element Analysis of Marine Risers under Random Loads
Abstract: The dynamic response of marine risers under long crested random sea is obtained in time domain using finite element solver ABAQUS/AQUA. The response analysis is based on a simulation technique which duly considers various nonlinear effects such as relative velocity squared drag force, variable added mass due to variable submergence and nonlinearity due to large excursions. It also accounts for variable tension in the riser due to variable submergence, variable …
Published in Journal of Offshore Structure and Technology · Vol. 1, Issue 1, 2014 · pp. 46–52 Read article
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Nonlinear Three Dimensional Dynamic Analysis of Titanium Drilling Riser
Abstract: Titanium alloys are selected for a high-pressure drilling riser’s application due to its high specific strength, corrosion resistance, and favorable elastic properties. The qualification of this titanium alloy requires assessing its resistance to hydrogen embrittlement and stress corrosion cracking due to seawater with/without cathodic protection, evaluating its dynamic response under long crested random sea. The response analysis is based on a simulation technique which duly considers the various nonlinear effects …
Published in Journal of Offshore Structure and Technology · Vol. 2, Issue 2, 2015 · pp. 27–40 Read article
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A Deep Dive into Oil and Gas Industry: Cyber Security Threats to Oil and Gas Industry
Abstract: Abstract Are they at risk?Increasing dependency on technology and web based communication has given rise for the cyber security threat, especially in oil and gas sector. Well oil and gas sector, well known for not excepting the technology easily, still known according to the repository of industrial security. Most targeted industry worldwide is petroleum sector.Petroleum company, the face of a hot shot boy sector,is facing significant threat of cybercrime, which …
Published in Journal of Offshore Structure and Technology · Vol. 3, Issue 2, 2016 · pp. 1–5 Read article
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Modelling and Structural Analysis of Ice Strengthened Vessel
Abstract: Abstract In this paper, one global and one local FE-model are developed in order to calculate the response of ice loading on an ice strengthened 100.000 DWT oil carrier. A global analysis is performed by applying loads in two different areas in the bow region. The deformations of the global model are used as boundary conditions in the analysis of the local model. In each of the two areas, the …
Published in Journal of Offshore Structure and Technology · Vol. 4, Issue 1, 2017 · pp. 11–20 Read article
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Drilling [Opportunities and Threats] in Arctic
Abstract: AbstractTo drill or not to drill? The Arctic is changing and increasingly drawing the world’s interest. Perhaps the guarantee of this immense region was best compressed by the previous Secretary of State George Shultz, when he said that the opening of the Arctic is the best occasion in mankind's history since the happening to the ice age. As environmental change renders the Arctic progressively available, there has been a generous …
Published in Journal of Offshore Structure and Technology · Vol. 4, Issue 2, 2017 · pp. 36–39 Read article
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Development of a DSP Prototype on QPSK Modulator and Demodulator Using Code Composer Studio for Radio Communication Systems
Abstract: As day by day there is increase in mobile telephone users, the bandwidth requirement for each user is mutually increasing. Due to this there is spectral congestion caused and drastic improvements have been taken in the field of mobile communications. Numerous approaches are taken to minimize the bandwidth requirement of each user. One such approach is called as quadrature phase shift keying (QPSK) technique for mobile and satellite applications. QPSK …
Published in Recent Trends in Sensor Research & Technology · Vol. 1, Issue 2, 2014 · pp. 7–15 Read article
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Analysis of Operational Transconductance Amplifier using 180 nm Technology CMOS Process
Abstract: Today, it is laborious to design an amplifier with low power utilization, high gain and high bandwidth. ICs industries are growing very fast and it is challenging for day by day growth to provide a better design with all accuracy. It is advisable to design an amplifier with an ideal way. Amplifiers are most essential unit of the analog circuitry; differential amplifier performs very well as input amplifier. Transfer characteristic …
Published in Journal of Microelectronics and Solid State Devices · Vol. 1, Issue 1, 2015 · pp. 10–13 Read article
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Applications of CFD in Car Design
Abstract: Development of computational fluid dynamics has now reached a state of maturity, which enables it to stimulate the flow of past practical car design configurations. It can thus play a very useful role in car design and development. CFD codes can be used to determine different loads on car and thus provide necessary input for the structural design. They can also be used to study and optimize the flow patterns …
Published in Recent Trends in Fluid Mechanics · Vol. 2, Issue 1, 2015 · pp. 26–30 Read article
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Parametric Analysis on Pulsating Heat Pipes
Abstract: Day-by-day the size of the electronic components is being drastically decreased, but at the same time the computing capacities are improved manifold. This presents a new challenge in the thermal management of these components. Pulsating Heat Pipes (PHP) can transport warmth for considerable distances leading to placement of condenser away from compact cabinets. From the literature, it is observed that Acetone, Ethanol and Distilled water are the most widely used …
Published in Recent Trends in Fluid Mechanics · Vol. 4, Issue 1, 2017 · pp. 38–43 Read article