The Active Superconducting Current Controller (ASCC) is a new type of Fault Current Limiters which can limit the fault current in different modes and also has the particular abilities of compensating active and reactive power for AC main circuit in the normal state. The use of the ASCC disturbs the operation of Over Current Relays (OCR) used in the distribution system. In consideration that applying superconducting fault current limiter (SFCL) may be a feasible solution, in this paper, the effects of a voltage compensation type active SFCL. The magnetic field in the air core can be controlled by PWM inverter output. Hence, the equivalent impedance can be maintained and overvoltage suppression is possible. The fault current and voltage suppression characteristics are simulated in mat lab. The simulation results show that the active SFCL and FCL can play an obvious role in restraining the fault current and overvoltage, and it can contribute to avoiding damage on the relevant distribution equipment and improve the systems safety and reliability.

Read More...

The Detail Project Report is an essential building block for any construction project. The DPR is to be prepared carefully and with sufficient details to ensure appraisal, approval, and subsequent implementation in a timely and efficient manner. The detailed project report gives us the clear idea about the existing site conditions and improvements needed to be accomplished. The DPR survey has been done for construction of a high level bridge on road pertaining @ km 6/2 (R&B) road to Kadapa district. The bridge crosses the river in normal crossing. It has total span of 50.80mts.This work has been executed under MNREGS scheme. The bridge has 3 vents of 6.37m effective span. The bridge is constructed across the stream to provide transportation facilities to people of Proddatur to various places of Kadapa District. This stream has an adequate discharge of 97.00 cusecs and it increases more during in rainy season. Traffic studies have been conducted on this road and the outcome was 120cvpd. The maximum flood level of this stream is 99.830.The linear water way is 18.00m. The design drawings and plans were given by MORT&H for execution of work. To calculate the discharge levels has been surveyed around 300mts both upstream and down streams. Funding for this project has been given by the government of A.P. The work has to be completed in a period of one year. The total estimate amount of the project is said to be 69.50 Lakhs.

Read More...

This project work involves an experimental and laboratory study of the Polypropylene fibers with two types of admixtures those are Quarry dust and Fly ash on the mechanical properties of the concrete used in the rigid pavement. In this experimental study involves two types of concrete mixes were prepared individually. Polypropylene fiber of 1% to 3% with Quarry dust of 0.1% to 0.3% and Polypropylene fiber of 1% to 4% with Fly ash of 0.1% to 0.4% by weight of cement were added to the mixes. After that a comparative analysis has been carried out for conventional concrete to that of the fiber reinforced in relation to their compressive, split tensile and flexural properties. By the experimental work the compressive, split tensile and flexural strengths are proportionally increased both Polypropylene + Quarry dust and Polypropylene +Fly ash usage. It is observed that the optimum dosages of Polypropylene + Quarry dust is 3% + 0.3% Polypropylene +Fly ash is 4%+ 0.4% by weight of cement. In this project cost analysis is also determined for conventional concrete and fiber reinforced with admixtures individually using experimental test reports. By analyzing the cost it was found that Polypropylene reinforced concrete with quarry dust pavement is economical than Polypropylene reinforced concrete with Fly ash pavement.

Read More...

Thin structural members are susceptible to buckling under compression loading. Aircraft skin is always thin irrespective of the size of the aircraft. Therefore, when the skin undergoes compression, it is likely to buckle. Vertical tail of the aircraft experiences bending, whenever the rudder is deflected to achieve the yawing motion of the aircraft. Side load will cause the bending of the vertical tail, which introduces tension and compression stress field in the two side skins respectively. This project includes the linear static analysis of the vertical tail box structure and buckling analysis of the stiffened panels undergoing compression. A linear static buckling analysis of the vertical tail box structure will be carried out to identify the most critical panel. After that the critical panel is taken for buckling analysis.

Read More...

The objective of this paper is to study the effect of different process parameter of wire electrical discharge machine (WEDM) process on the performance measures such as material removal rate (MRR), surface roughness, dimensional accuracy and kerf width. It is necessary to evaluate the factors that affect the productivity and efficiency of WEDM process. It will directly contribute to increase cutting speed and dimensional accuracy.

Read More...

Association rule mining is a popular and well researched method for discovering interesting relations between variables in large databases. In this paper we introduce the concept of Data mining, Association rule and Multilevel association rule with different algorithm, its advantage and concept of Fuzzy logic and Genetic Algorithm. Multilevel association rules can be mined efficiently using concept hierarchies under a support-confidence framework.

Read More...

The prediction of process performance is essential to select the control parameters for obtaining the goals of production. Ultrasonic machining is popular material removal process brittle materials like glass, ceramics etc. Glass is a widely used engineering material in number of engineering applications like microscopy, optics etc. In this paper, experiments are conducted to obtain data regarding the effect of process parameters on ultrasonic slitting in common glass. Amplitude, pressure and thickness of the glass sheet are chosen as control parameters. Three levels of each of these parameters are selected giving 33 = 27 trials. Material removal rate (MRR), overcut (OC), taper produced on the slits are determined as response parameters. Artificial Neural Network (ANN) model is developed to capture relationship between control and response parameters as a predictive tool to predict the performance of the process.

Read More...

In the recent year’s development of Internet is an increasingly important factor in today’s lifestyle. As online advertising budgets of marketers are growing every year, internet advertising has developed in similar way. The following types of online advertisement: banner advertisement, pop-up advertisement, web advertising also called. To deliver promotional marketing messages to consumers, internet advertising can be used as internet advertising is a type of marketing. Fast retrieval of the relevant information from databases has always been a significant issue. Data clustering is one of the chief techniques among the numerous techniques developed for this purpose. Social media is the collaborative tools used for communication that helps the companies to gain the potential users and makes them visible who have no knowledge of their products. Companies can locate target users by analysing their interests, in particular brand and for this purpose social media advertising can be used. It will lead to a systematic approach by developing a technique to effectively improve the marketing plans. This can be possible if we are using data mining clustering algorithm to find out key users to rise up the marketing tactics in internet advertisement. It describes the general working behaviour, the methodologies followed by these approaches and the parameters which affect the performance of these algorithms. The main objective of this paper is to gather more core concepts and techniques in the large subset of cluster analysis.

Read More...

For machining of brittle materials like glass, ceramics etc., ultrasonic machining has become very popular. Number of engineering and common applications require use of glass fiber reinforced plastic (GFRP) and it is essential to machine features in this material for use. In this work, full factorial design of experiments (DoE) based investigation is conducted to study the effect of process parameters on ultrasonic drilling of GFRP. The control parameters selected include amplitude, pressure and thickness of the GFRP sheet being machined. Three levels of each of these parameters are selected giving 33 = 27 trials. The material removal rate (MRR), overcut (OC), taper, top delamination and bottom delamination produced on the GFRP while slitting are measured as response parameters. Ultrasonic machining has number of process parameters and is not a simple process to control and get desired machining results. Grey relational analysis is applied to the experimental data to obtain the best combination of input parameters for different cutting conditions like roughing, semi-finishing and finishing. Parameter combinations are given grades using grey relational analysis (GRA) process and the optimum combination is suggested for various requirements of machining in terms of roughing, semi-finishing and finishing.

Read More...

In this Paper, the architecture and FPGA implementation of a Coordinate Rotation Digital Computer (CORDIC) pipeline Fast Fourier Transform (FFT) processor is presented. Fast Fourier Transforms (FFT) is highly efficient algorithm which uses Divide and Conquer approach for speedy calculation of Discrete Fourier transform (DFT) to obtain the frequency spectrum. CORDIC algorithm which is hardware efficient and avoids the use of conventional multiplication and accumulation (MAC) units but evaluates the trigonometric functions by the rotation of a complex vector by means of only add and shift operations. We have developed Fixed point FFT processors using VHDL language for implementation on Field Programmable Gate Array. A Mixed Radix 8 point DIF FFT/IFFT architecture with CORDIC Twiddle factor generation unit with use of pipeline implementation FFT processor has been developed using Xilinx XC3S500E Spartan-3E FPGA and simulated with maximum frequency of 157.359 MHz for 16 bit length 8 point FFT. Results show that the processor uses less number of LUTs and achieves Maximum Frequency.

Read More...

In the present scenario, Energy demand is increasing day by day. To meet that demand a lot of thermal power plants are being set up throughout the world. In thermal power plants one of the important role is played by condensate extraction pumps just place after the condenser. Condensate pump is a specific type of pump used to pump the condensate (water) produced in an HVAC (heating or cooling), refrigeration and condensing boiler furnace or steam system. While analyzing the design of condensate pump, it was observed that a cut-less rubber bearing was incorporated between the rotating (shaft sleeve) and stationary (Bowl ,bell mouth etc.) parts of the pump to increase the pump service life but due to the tendency of wear it lead to poor service life and wear and tear of the pump parts. In the present investigation, analysis was carried out on a rotary condensate pump of power rating 500 KW. In the pump, peek metal was introduced between the rotating and stationary parts and the design was analyzed. It was observed that the service life improved by 1.5 times(3 years). Also the wear and tear of parts reduced tremendously and unwanted replacement of parts was prevented.

Read More...

This paper presents an improved the high voltage boost inversion ability of switched inductor quasi ZSI by using Boost PWM technique. This presents a comparative analysis of Boost Inversion Ability of Switched Inductor Quasi z-source inverter (SL-QZSI) with conventional z-source Inverter (ZSI). In comparison to conventional ZSI for the same value of voltages in the input and output the proposed SL-QZSI provides the less count on passive component a dc-source with common ground less voltage across the capacitors it gives the continuous input current current shoot through is reduced and also the current stress across the inductor and diodes are reduced. This thesis presents the operating principle boost inversion ability analysis simulation results and comparison of conventional ZSI with SLQZSI The simulation results confirmed the ability of high step up inversion by this proposed SL-QZSI. An extended switched inductor quasi z-source inverter (ESL-QZSI) with high boost voltage inversion ability is presented which combines the SL-QZSI with the traditional boost converter as well as improves the switched-inductor cell. Compared with the classic SL-QZSI topologies the proposed topology reduces the voltage stresses of capacitors power devices and diodes for the same input. The operation principle of the proposed topology is analyzed in detail. In addition, the performance of the proposed topology is verified by simulations and experiments.

Read More...

In this study, a hypothetical simulation model is analyzed under varying uncertainty conditions; the key features of overlapping and functional interaction affect the performance measures of development time and effort. Findings indicate that, first and foremost, whether or not overlapping occurs, increasing functional interaction eventually leads to a sound system. A selective overview of group & individual process behaviors of a combined suction & discharge cycles of a hypothetical oil refinery plant is suggested. The pipe material is Carbon fiber reinforced plastic which is chosen because of its excellent length to weight ratio & it serves as an integral part the system which involves tank piping. This model uses psychologically legitimate & theoretically grounded models for time & decision rules. The results of preliminary simulation experiments suggest that the model is sensitive to structural & pay- off density & precisely replicates ideal free distributions. Pipe network models allow the modeling of storage tanks in which the working fluid (here, Naphtha) surface is inconsistent with inflow & outflow. Stress analysis of CFRP material shows that the maximum stresses are within allowable material strength. From the trials, it can be accomplished that, with proper design parameters, CFRP can take the design load similar to that of steel & other alloys

Read More...

Sentiment classification is an ongoing field and interesting area of research because of its application in various fields. Customer sentiments play a very important role in daily life. Currently, Sentiment classification focused on subjective statements and ignores objective statements which also carry sentiment. During the sentiment classification, problem is faced due to the ambiguous sense (meaning) of words and negation words. In word sense disambiguation method semantic scores calculated from SentiWordNet of WordNet glosses terms. The correct sense of the word is extracted and determined similarity in WordNet glosses terms. SentiWordNet extract first sense of word which used in general sense. This work aims at improving the sentiment classification by modifying the sentiment values returned by SentiWordNet and compare classification accuracy of support vector machine and naïve bays.

Read More...

In this experiment waste (Polyethylene Terephthalate) PET fibers are added to concrete by the weight of cement. Used PET bottles are selected for this research because PET bottles are thrown by using only once and they are non-biodegradable in nature, which is causing major environmental problem all around the world. Main purpose of this investigation is to analyze the result of waste plastic bottles fibers as addition in concrete by the weight of cement. PET bottles are easily available for free of cost and that are collected. and they are cut in the form of fiber by removing top and bottom portion, and they are cut into size of 25 mm length and 0.7 mm width with a aspect ratio of 35 (AR 35).Study was conducted on M30 grade of concrete, PET fibers were added to the mix by the varying percentage of 0%, 0.5%, 1%, 1.5%, 2%, 2.5%, and 3% by weight of cement. The weight of plastic fibers was in grams. Total 126 specimens were prepared such as 42 cubes, prism and cylinders respectively. The specimens were tested for compression test, split tensile test and flexural test only after curing for 7 days and 28 days. Highest strength of concrete was noted at 1% addition of plastic fibers to the concrete, based on this result beams were casted and results were analyzed after 28 days of curing.

Read More...

Maximum Power Point Tracking (MPPT) controller is very important part of the solar generation system. This paper presents the basic need and the various methods and techniques of maximum power tracking (MPPT) control. Every technique of MPPT control is evaluated based on its ability to detect multiple maxima, efficiency of the output solar power, cost and way of implementation, rate of convergence etc. the Perturbation and Observation technique and Incremental conductance Technique are widely used in MPPT control due to their advantages.

Read More...

This paper focus on the various sources of power dissipation in modern VLSI circuits. This paper also discuss the importance of designing low power VLSI circuits along with various techniques of power reduction and its advantages and disadvantages. It is basically a comparative study between various power reduction techniques in modern VLSI circuits.

Read More...

The present paper work is directed to a device located at the intake port at the junction of the intake manifold and the engine head. This location allows the device to be used with any type of carburetor or fuel injection system. It is the object of the present device to utilize at least three fixed, helically twisted blades to impart additional swirl mixing of the fuel/air mixture. This fuel/air mixture has already been pre-heated by its travel through the intake manifold. The "violent swirl" created by the device provides a more uniform fuel/air mixture, thereby causing a more complete and efficient combustion. The overall result of using the device is better gas mileage, increased performance, easier starting, and less pollution. The object of the project work to improve the fuel/air mixture of the fuel injected engines, preventing valves from being burned or eroded by clogged injectors. As a result of forcing the air to enter the intake port in a high velocity swirl, there is disruption of any direct fuel streams upon the head of the cylinder intake valve which occur as a result of clogged injectors. Another object of the project work is to provide a device that improves the homogeneity of the fuel/air mixture delivered by the carburetor to the cylinders of an internal combustion engine with little or no obstruction in the mixture flow resulting in no starving of the engine. Another object to deliver the fuel/air mixture to the center of the cylinder for a uniform flame front. The swirling mixture delivered by the present invention results in cleaner, more-efficient combustion.

Read More...

Gas Tungsten Arc Welding Process (GTAW) is widely used in fabrication of Aluminium and Aluminium Alloy material when precision is considered as a prime importance. Deformations in the object undergoing welding are one of the foremost problems encountered in the welding industry. Thus it is often required to study the factors which affect the deformations produced during welding to avoid errors in the geometry. Present investigation highlights Experimental and Finite Element Analysis of a Single-V Groove Butt Weld on Weld Pool Geometry of Aluminium Alloy Plate under Different Joint Parameters.Finite Element Method (FEM) has been employed to do the transient thermal and structural analysis of the assembly. The Finite Element Analysis has been done on ANSYS 14.5 Workbench. Number of factors is liable to produce effects in the job during the welding operation. Aim of this paper is the effect of welding parameters like as welding current, shielding gas flow rate and welding speed with mechanical Properties like tensile strength and hardness. After that finite element analysis for temperature distribution and distribution of the stresses in the welded Aluminium alloy plate. The results show that the larger the Welding current and smaller welding speed will lead to the maximum residual tensile stress. Therefore a residual stress will arise from the restraint position. The ultimate residual stress of weldment is determined by material yield strength at different temperature. The higher yield strength at different temperature has higher material residual stress. Because of its higher thermal conductivity, aluminium alloy test specimens have small temperature differential.

Read More...

Water is an important ingredient of concrete, which not only actively participates in the hydration of cement but also contributes to the workability of fresh concrete. Naturally available water contains many numbers of chemical impurities like chlorides, various salts and acids in different concentrations. HCl is not a common natural chemical compound, but it can cause damage to concrete in industrial environments .The effects of hydrochloric acid on concrete are multiple .If there is presence of industrial disposals containing HCl and such water is used in construction has several problems. Studies on gravel concrete and conventional concrete are performed with 0 ml, 50 ml, 100 ml per liter HCl acid solution. M20 grade gravel concrete conventional concrete are designed based on IS 10262-1982 code. The mix proportions for gravel concrete is 1: 0.5 : 1.53 : 2.92 and conventional concrete is 1 : 0.5: 1.44: 3.28. The cubes and cylindrical specimens are prepared as per mix proportions. The Compressive strength of cube specimens after 7days, 28days and 60 days curing period and split tensile strength for 28 days curing period are performed. The compressive strength values obtained for 28 days curing without HCl are 24.31N/mm2 and 35.1N/mm2 for gravel and conventional concrete respectively. The compressive strength values obtained after 28 days curing with 50 ml per liter HCl mixing in water are 19.51N/mm2 and 33N/mm2 for gravel and conventional concrete respectively. The compressive strength values obtained after 28 days curing with 100 ml per liter HCl mixing in water are 19N/mm2 and 31.3N/mm2 for gravel and conventional concrete respectively. The compressive strengths cube specimens are decreased with increasing HCl acid for a given duration and increased with increasing curing period at a given concentration of HCl.

Read More...

Sensors plays a vital role for measurement of traffic density on road. To acquire the traffic data from road various sensor were used. Different sensors have their own advantages and limitation in terms of accuracy in measurement. However a sensor varies from parameter to parameter i.e range, location of installation, power consumption, number of scanned lanes, features etc. This paper describes about the conventional sensors that were used for traffic density measurement in automatic traffic control system. Also the comparison between different sensors has been discussed in this paper.

Read More...

Pollution from the petroleum oil increases day by day in terms of CO2, CO, NOx, PM and many other gases and particles. Price difference and economy leads people toward the use of alternative fuels. These problems indicate that the initiatives to replace gasoline and diesel fuel, due to the impact of fossil fuel crisis, hike in oil price and stringent emission norms, must be taken. Solution to long term energy problem will come only through research and developments in the field of alternative energy sources. Waste to energy is the recent trend in the selection of alternate fuels. One such fuel is WTO (waste transformer oil), which can be obtained from waste as an alternative fuel. By using WTO as a replacement of Diesel, both the above stated problems can be solved at great extent. From literature review it comes clear Fuels additives have become essential tool not only improve the performance and also produce lower emissions (NOx) of diesel engines. A variety of additives (metal based, oxygenated, antioxidants, lubricity improvers, cetane number improvers, and cold flow improvers) are used in biodiesel fuel to meet the international emission standards. Prime objective of this work is to find out an alternative fuel that can be used as a replacement of diesel and analyses the performance and reduce emission parameters. To fulfill the prime objective, Diesel engine, fuelled with Waste transformer Oil (WTO) - Diesel blends with Additive should be used to be operated at different blend ration with different concentration of Additives.

Read More...

Like many complex supply chain problems, vendor selection problems are not so well defined which can be handed over completely to computers, whereas many human characteristics are also essential to the issues. In this paper attention is given to the fuzzy System helps Vendor Selection Problem (VSP) for Conventional Lathe Machine Bed . It required expert’s view, conversion it into fuzzy term, making 8 rule base Model with implementing Fuzzy System using MATLAB. At ending point, conclusions and likely areas of Fuzzy in selecting vendors are present.

Read More...

Rapid expansion of wireless technologies permits continuous healthcare monitoring of mobile patients using compact biomedical wireless sensor motes. These tiny wearable devices –have limited amount of memory, energy, computation, & communication capabilities – are positioned on a patient; after that , they self-configure to create a networked cluster that is capable to continuously monitor important signs like blood pressure and flow, ECG, core temperature, the oxygen saturation, and CO2 concentration (i.e. for the respiration monitoring). The WBAN is an energizing innovation that guarantees to convey the human services to a novel level of the personalization. The scaled down sensors can be worn on body and they can non-rudely screen individual's physiological state. The numerous sensors speak with mobile utilizing the remote interfaces shaping WBAN. The WBANs empower checking a singular's wellbeing consistently in the free living conditions, where individual is allowed to direct his or her day by day action. In propose, design a enhance cluster based protocol.

Read More...

2-[(4-bromo anilino)]-4-chloro-6-morpholino-1,3,5-triazine[2a] and 4-chloro-N-(4-fluorophenyl)-6-morpholino-1,3,5-triazin-2-amine [2b]were synthesized and studied for their biological activity. These compounds were prepared by the condensation of 4-bromoaniline and 4-fluoroaniline with 4-(4,6-dichloro-1,3,5-triazin-2-yl) morpholine [1] which is prepared by the reaction between 2,4,6-trichloro-1,3,5-triazine and morpholine. All the compounds were characterized by elemental analysis and spectral studies.

Read More...