In this paper, the effects of welding process parameters of Gas Metal Arc Welding (GMAW) on tensile strengths are found out..The GMAW process is an important in many industrial operations. Experiments have been conducted as per central composite design matrix to find the effect of process control parameters: voltage, wire feed rate, welding speed and gas flow rate on tensile strength. The tensile testing of the welded joint is tested bya universal tensile testing machine and results are evaluated. MINITAB software is used to draw the direct and interactive graphs which show the effect of welding input process parameters ontensile strength.
Keywords: - GMAW, Central composite design matrix, Tensile strength, etc
With the increasing levels of technology, the efforts are being put to produce any kind of work that has been continuously decreasing. The efforts required in achieving the desired output can be effectively and economically be decreased by the implementation of better designs. Power screws are used to convert rotary motion into reciprocating motion. An object lifting jack is an example of a power screw in which a small force applied in a horizontal plane is used to raise or lower a large load. In this fabricated model, an electric motor will be integrated with the object lifting jack and the electricity needed for the operation will be taken from the d.c battery and thereby the mechanical advantage will be increased.
Keywords: - Object lifting jack, automation, limit switch, lead screw
The objective of this paper is to investigate experimentally the optimum process parameters (cutting speed, feed rate and depth of cut) resulting in an optimization of material removal rate (MRR) and tool wear while turning of hardened AISI 52100 steel under dry cutting conditions using Taguchi method. A L9 orthogonal array, signal-to-noise(S/N) ratio and analysis of variances (ANOVA) are applied with the help of Minitab.v.16.2.0 software to study performance characteristics of process parameters with consideration of Material Removal Rate (MRR) and Tool wear. The results obtained from the experiments are changed into signal-to-noise ratio(S/N) ratio and used to optimize the value of MRR and tool wear The ANOVA is performed to identify the importance of parameters. The conclusions arrived at are considerably discussed at the end.
Keywords: - ANOVA, Hardened, MRR, Tool wear, Taguchi technique
Petroleum refining area Sulfur is naturally present as an impurity in fossil fuels. When the fuels are burned, the sulfur is Released as sulfur dioxide—an air pollutant responsible for respiratory problems and acid rain. Environmental regulations have increasingly restricted sulfur dioxide emissions, forcing fuel Processors to remove the sulfur from both fuels and exhaust gases. The cost of removing sulfur from natural gas and petroleum is high.In natural gas, sulfur is present mainly as hydrogen sulfide gas (H2S), while in crude oil it is present in sulfur-containing organic compounds which are converted into hydrocarbons and H2S during the removal process (hydro desulfurization). This well-established process uses partial combustion and catalytic oxidation to convert about 97% of the H2S to elemental sulfur. Implement Distributed Control System (DCS) CENTUM CS3000 to automate the removal process in petroleum refining.
Keywords: - DCS, Valve, Parameters, Automation
Efficient compression of multi-view images and video is crucial for 3DV application. The major task of three-dimensional video (3DV) coding is to provide high quality depth data. For experimental coding purposes, the compression method used is H.264/AVC video coding standard. In this paper, Structural similarity (SSIM) based Rate distortion (RD) optimization is expressed for distortion metric. In multi-view video, the left view and the right view have their pixels with strong dependencies of structural information that are spatially close. The full reference quality metric SSIM is used to exploit the structural information from different views in multi-view video coding. With the proposed system, significant gains can be achieved in terms of SSIM index.
Keywords: - DCT, MB, Multi-view video coding, SSIM, Rate distortion optimization
To analyse experimental investigates on the Performance and Emission of Single Cylinder Four Stroke Diesel engine under the power of producingan effect of magnetic field. The magnetic field applied along the fuel line immediately before fuel injector. It has been reported that magnetic field helps to improved mixture formation by increasing the atomization process of the spray in the combustion chamber due to increasing the rate of disintegration of the droplets as a result of reduction in the surface tension and viscosity of the fuel[1]. The effect of magnetic field on the engine performance parameters such as specific fuel consumption, break thermal efficiency, exhausts emissions etc. by applying the magnetic field along the fuel line immediately before fuel injector. The strong permanent magnet of strength 2000 gauss is applied to fuel line for magnetic field. At different engine load conditions the experiments are conducted. An exhaust gas analyzer is used to measure the exhaust gas emissions such as CO, CO2, HC and NOX. With the application of magnetic field the percentage reduction in fuel consumption is about 8% at higher load, the percentage reduction in HC and NOX is about 30% and 27.7 % respectively. The CO emission gets reduced with the application of magnetic field at higher load. The percentage reduction in CO2 emissions is reduced about 9.72% at average of all loads with the effect of magnetic field.
Keywords: - Efficiency, Emission, Exhaust gas analyzer, Magnetic Fuel Energizer.
A study, to design, fabricate and performance evaluation of the domestic gas oven was carried. The oven was designed and was fabricated with an outer dimension of 450 mm length × 350 mm width × 380 mm height made up stainless steel and the inner dimension of 380 mm length × 310 mm width × 340 mm height made up of aluminum sheet and silicone rubber and asbestos used as an insulator. The gas burner was fixed in the stand for baking and the deflector plate placed in the bottom of the baking chamber and the bimetallic thermometer was fixed in the oven and provided with the vent for the removal of humid air. The oven was tested in order to determine its function the model works on natural convection. The effectiveness was analyzed by baking cake, cookies and muffins. Results showed that the cake was baked in 28 min at a temperature of 180˚C it depends on the size of the cake, cookies took 10 min at a temperature of 150˚C and the muffins were baked in 13min at a temperature of 180˚C showing higher energy efficiency by reducing the energy, cost and the time of baking.
Keywords: - Design, Fabrication, Gas Oven, Natural Convection, Energy Efficiency
The problem of bringing a distributed multi-process system to a consistent state after transient failure is quite a difficult task. This paper addresses two components of this problem by describing a distributed algorithm to create consistent checkpoints, as well as rollback-recovery algorithm to recover the system to a consistent state. The motive of this algorithm is to make system more fault-tolerant. The likelihood of fault grows as systems are becoming more complex and applications are requiring more resources, including execution speed, storage capacity and many more. A checkpoint is a local state of a process saved on stable storage. In case of fault in distributed system, checkpoints enable the execution of the program to resumed from a previous consistent global state rather than resuming the execution from the beginning. When a process takes a checkpoint, minimal number of additional processes is forced to take checkpoints. Similarly when a process rollback and restarts from failure, a minimal number of additional processes are forced to rollback with it. This paper presents an efficient that algorithm works on Coordinator and Cohorts mechanism where the consistent set of checkpoints is established when it is directed by the coordinator. The checkpoints are established when all cohorts finishes the task assigned by the coordinator and there is no message in transit.
Keywords: - Distributed system, checkpoints, consistent state rollback recovery, orphan message and domino effect.
Microbial enhanced oil recovery application (MEOR) is a potentially attractive way to recover additional oil from a reservoir. This study reveals the ability of microorganisms for mobilization and displacement of residual oil in sand pack cores by the action of produced biosurfactant. Isolates of hydrocarbon-utilizing bacteria were identified as pseudomonas, Bascillus, Citrobacter and Escherichia, using microscopic examination and biochemical tests. Three of the listed microbes were confirmed to be potential biosurfactant-producing microbes by testing the spent culture filtrate of the isolates. Pseudomonas and Escherichia were observed to produce biosurfactants only on nutrient broth, which was observed to emulsify hydrocarbons. The flooding experiment also showed that primary recovery accounts for about 25% and that of secondary oil recovery (brine chase) approximates 20% of original oil in place. The maximum oil recovery achieved by tertiary oil recovery (MEOR) using biosurfactants was approximately 50% OOIP. These biochemical tests conclusively reveal that biosurfactant slugs are technically feasible for maximizing oil recovery by reducing interfacial tension for improved mobilization of hydrocarbons.
Keywords: - Biosurfactants, Emulsification, Incubation time, isolates, Microbes.
[1] Davis, J.B.: "Petroleum Microbiology".Elsevier Scientific Publishing C. Amsterdam, The Netherlands, pp 120-125, 1978.
[2] Clark, J. B, Munnecks, D. M. and Jenneman G. E.: "Insitu Microbial Enhanced Oil Production". Dev. Ind Microbial pp 695-701, 1981.
[3] Westlake , D. W.S,:n Heavy Crude oil and Oil Shale Tertiary Recovery Of Petroleum From Oil Bearing Formations." Petroleum Microbiology, Macmillian, New york, pp 537-552, 1884.
[4] Jack , T. R, Blasio, E. D, Thomason B. G and Ward V.: " Bacterial Systems For Selective Plugging in Secondary Oil production." International bio resources , 1985.
[5] Jang, L. K., Sharma, M. M., Findely, J. F., Chang, P.W., and Ten, T.F.:"An Investigation of Transport Of Bacteria Through The Porous Media." Prod Int Cont, Microbial Enhanced Oil Recovery, Alfton, Oklahoma DOE cont-820514D, pp 60-70. 1982
An experimental study has been carried out for palm seed oil blended with diesel used in a single cylinder diesel engine. Palm seed oil is obtained from the seeds of palm tree. In this study, the effects of parameters` i.e. load, compression ratio and injection pressure are taken as variable for optimization. As the experiment required simultaneously optimization of three parameters with three levels, Taguchi method of optimization is used in this experiment. The results of the Taguchi experiment identify that 16 compression ratio, injection pressure 180 bar and engine load 10kg are optimum parameter setting for highest brake thermal efficiency. Engine performance is mostly influenced by engine load and is least influenced by compression ratio. Confirmation experiment was done using an optimum combination showed that the brake thermal efficiency was found by experiment is closer to the predicted value.
Keywords: - Parametric optimization, Diesel engine, Palm seed oil, Brake thermal efficiency, Taguchi method
This paper presents a methodology to reduce defective rate from broken filament defects in the Direct Spin Drawing process. The Failure Mode and Effects Analysis (FMEA)was used to analyze the causes of defect and prioritize those causes,leading to the pertinent improvement methods.The improvement method involved the development of better methods for detection of failures occurred in machine parts. After improvement, the defective rate from broken filament defects significantly was reduced from 3.35% to 1.76%.
Keywords:-Broken filament, Defective Reduction, Direct Spin Draw process, Detection, FMEA
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