Swarna Bharathi Institute of Science and Technology

Khammam, India

Swarna Bharathi Institute of Science and Technology

Khammam, India
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Mopar S.S.,Government College of Engineering, Aurangabad | Murthy P.K.,Swarna Bharathi Institute of Science and Technology
International Journal of Applied Engineering Research | Year: 2015

The identification, location and classification of fault are a basic requirement for optimal operation of power system. The precise fault location technique significantly reducing outage time and will improves system reliability and speed for protection control. The classification of faults in HVDC can be identified by monitoring the signals both on AC and DC side of the HVDC system. This paper presents a review in literature of VSC based HVDC system including convertor topologies, fault location and identification techniques based on travelling wave method and wavelet transform is discussed. The identification of faults by using frequency or time domain based method is difficult. Wavelet transform is most suitable method providing excellent discriminative features to classify different disturbances in VSC-HVDC transmission system as it will work based on both time and frequency domain. © Research India Publications.


Ravi B.,Swarna Bharathi Institute of Science and Technology | Balu Naik B.B.,JNTUH College of Engineering | Udaya Prakash J.,Anna University
Materials Today: Proceedings | Year: 2015

Aluminium Matrix Composites (AMCs) are the competent material in the industrial world. They are widely used in aerospace, automobile, marine industries, etc. due to their excellent mechanical properties. The Aluminium matrix is strengthened when it is reinforced with hard ceramic particles like SiC, Al2O3, B4C, etc. resulting in enhanced wear resistance and improved strength to weight ratio. Based on the type of reinforcement, size and morphology, the AMCs are fabricated by different methods. Among the manufacturing processes, the conventional stir casting is an attractive processing method for producing AMCs as it is relatively inexpensive and offers a wide range of materials and processing conditions. An attempt has been made to fabricate Aluminium Matrix Composites (AA6061) reinforced with Boron Carbide (B4C) of average particle size 25μm with different weight percentages using indigenously developed stir casting method. The homogeneous dispersion of B4C particles in the AMCs was revealed from the optical micrographs. Mechanical characterization was done and the tensile strength and hardness has increased with the increase in weight percentage of B4C particles. © 2015 Elsevier Ltd.


Yeluri L.P.,Swarna Bharathi Institute of Science and Technology | Neelima S.,Swarna Bharathi Institute of Science and Technology | Padmavathi M.,Swarna Bharathi Institute of Science and Technology
AICERA 2012 - Annual International Conference on Emerging Research Areas: Innovative Practices and Future Trends | Year: 2012

This paper presents a mobile application based on providing Location Based Services (LBS) using Global Positioning System (GPS) as a location provider. The main objective of this work is to design and implement a client server system that helps the system to know the location of their employees and also alerts the employee when they are nearby. The mobile application was implemented using J2ME where the most recent APIs and other older APIs were combined together in order to make the application reliable on all types of mobiles. The server was implemented using J2EE technologies. The type of the Database used in the system was MySQL. The average location accuracy of the application is about couple of meters. © 2012 IEEE.


Swetha A.,Swarna Bharathi Institute of Science and Technology | Krishna Murthy P.,Swarna Bharathi Institute of Science and Technology | Sujatha N.,Swarna Bharathi Institute of Science and Technology | Kiran Y.,Swarna Bharathi Institute of Science and Technology
Journal of Engineering and Applied Sciences | Year: 2011

This paper presents Mathematical Morphological applications to assess the performance of High Voltage Direct Current system. The satisfactory performance of this system is one of the necessary conditions to obtain uninterrupted power supply as it is transmitting bulk power over a long distance. In this paper a 300 kM long HVDC system is simulated for various faults on the DC line and a technique to locate the faults on the DC line is proposed. The simulated results presented in this paper are in good agreement with the published work. © 2006-2011 Asian Research Publishing Network (ARPN).


Sudheer Reddy K.,Acharya Nagarjuna University | Santhosh Kumar Ch.N.,Swarna Bharathi Institute of Science and Technology | Sitaramulu V.,Swarna Bharathi Institute of Science and Technology | Kantha Reddy M.,IUCEE
Advances in Intelligent Systems and Computing | Year: 2013

Pattern mining is one of the most pivotal steps in data mining; pattern mining immediately comes after the preprocessing phase of WUM. Pattern discovery deals with the sorted set of data items presented as part of the sequence. Pattern mining, users can recognize the web paths follow on a web site easily. The aim of this research discovers the patterns which are most relevant and interesting by using a Web usage mining process. The server web logs aids are the input to this process. Our target is to discover users' behavior, who has visited the web sites for less number of times. We have enlightened a method for clustering, based on the pattern summaries. We have conducted intense experiments and the results are shown in this paper. © 2013 Springer-Verlag.


Madhavi N.,P.A. College | Jyothi B.,Swarna Bharathi Institute of Science and Technology
International Journal of Pharma and Bio Sciences | Year: 2016

Among all vitamins, vitamin C plays a crucial role in maintaining good health. In the present study ten types of fruits are analyzed to compare ascorbic acid levels and the effect of boiling on its quantity is also determined by colorimetric method .It is concluded that its levels are gradually decreased with increase of boiling time. Cheaply and mostly available fruits have higher concentration of ascorbic acid than other fruits. In Psidium guajana, Citrus aurantium and Phyllanthus emblica the concentration of vitamin C is more. It is concluded that the concentration of ascorbic acid is more in semi-ripened stage of the fruit than ripened and unripened stages of Citrus limon, Citrus aurantifolia and Psidium guajana. But it is more in unripened fruits of Citrus medica and Citrus aurantium. In Psidium cattleianum sabine and Psidium littorale ascorbic acid concentration is more in fully ripened stage.


Chander G.S.,Swarna Bharathi Institute of Science and Technology | Reddy G.M.,Defense Metallurgical Research Laboratory | Tagore G.R.N.,National Institute of Technology Warangal
International Journal of Advanced Manufacturing Technology | Year: 2013

Dissimilar joints between austenitic stainless steel and low alloy steel are extensively used in many high temperature applications in the energy conversion systems. In the present investigation, emphasis is made on the influence of process parameters on the impact toughness and hardness of the friction welded joints between these two materials. The important process parameters in friction welding such as friction force, forge force, and burn-off lengths are considered for optimization by Taguchi method using L8 27 orthogonal array. It is found that under low friction force, forging force, and burn-off conditions, the impact toughness is high due to the observed acicular martensite. Low impact toughness is reported for the welds made at higher levels of the parameters. Carbon depletion is also observed close to interface in low alloy steel side. Microhardness at the weld center is less than the microhardness on either side at the interface of low alloy steel and austenitic stainless steel close to weld center. The contribution of each parameter and significance of interactions of these parameters is determined by Taguchi method. Among these parameters, friction force has significant influence and forging force has negligible influence on microhardness. The burn-off has maximum influence while forge force has minimum effect on toughness of the welds. Statistical analysis of variance is carried out, optimum process parameters are evaluated, and regression equations are obtained. © 2012 Springer-Verlag London Limited.


Chander G.S.,Swarna Bharathi Institute of Science and Technology | Reddy G.M.,Defense Metallurgical Research Laboratory | Rao A.V.,Defense Metallurgical Research Laboratory
Journal of Iron and Steel Research International | Year: 2012

Fundamental investigation of continuous drive friction welding of austenitic stainless steel (AISI 304) and low alloy steel (AISI 4140) is described. The emphasis is made on the influence of rotational speed on the microstructure and mechanical properties such as hardness, tensile strength, notch tensile strength and impact toughness of the dissimilar joints. Hardness profiles across the weld show the interface is harder than the respective parent metals. In general, maximum peak hardness is observed on the stainless steel side, while other peak hardness is on the low alloy steel side. A trough in hardness distribution in between the peaks is located on the low alloy steel side. Peak hardness on the stainless steel and low alloy steel side close to the interface increases with a decrease in rotational speed. All transverse tensile joints fractured on stainless steel side near the interface. Notch tensile strength and impact toughness increase with increase in rotational speed up to 1500 r/min and decrease thereafter. The mechanism of influence of rotational speed for the observed trends is discussed in the torque, displacement characteristics, heat generation, microstructure, fractography and mechanical properties. © 2012 Central Iron and Steel Research Institute.

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