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Surendranagar, India

Praveen B.,Care Group Of Institutions | Balusamy V.,PSG College of Technology | Krishnamoorthi J.,PSG College of Technology | Angelo P.C.,PSG College of Technology
International Journal of Applied Engineering Research | Year: 2015

Equal channel angular pressing, is a severe plastic deformation process to develop grains below 1ᣡm in diameter. The paper reports the formation of ultra fine grained structure in electrolytic copper by equal - channel angular pressing (ECAP). Electrolytic copper was successfully processed using a die having channel intersection angle Ф=90° and angle of curvature ψ=200 in route BC. ECAP was carried out upto 10 passes at room temperature. The imposed strain resulted in a large reduction in the grain size to submicron level. Microstructure and mechanical properties of commercially pure copper rods processed by equal channel angular pressing were investigated. Special attention was paid to the features of the processed microstructures and micro hardness properties of the ECAP samples. The grain size and micro strain were calculated from XRD data using Williamson Hall Method. The optical morphology of each angle pressed copper was studied and correlated with grain size measured by William’s Hall Method. Micro hardness and micro tensile values of ECA pressed copper varied with respect to each angle press. © Research India Publications. Source


Prabhu J.,Sathyabama University | Malmurugan N.,Care Group Of Institutions | Gowtham R.,Vellore Institute of Technology
2nd International Conference on Computer Research and Development, ICCRD 2010 | Year: 2010

Enterprise Resource Planning (ERP) systems represent a huge market in the commercial arena. Products from suppliers such as SAP, Oracle and more recently, Microsoft, dominate the software market. Testing in these projects is a significant effort but is hardly supported by methods and tools other than those provided by the suppliers themselves. Experience shows that testing in these projects is critical, but often neglected. Recent 'lessons learned'work by the Paul Gerrard indicates that a benefit, risk- and coverage-based test approach could significantly reduce the risk of failures. It is evidence that modified condition/decision coverage (MC/DC) is an effective verification method and can help to detect safety faults despite of its expensive cost. In regression testing, it is quite costly to return all of test cases in test suite because new test cases are added to test suite as the software evolves. Therefore, it is necessary to reduce the test suite to improve test efficiency and save test cost. Many existing test-suite reduction techniques are not effective to reduce MC/DC test suite. This paper proposes a new test-suite reduction technique for MC/DC: a bi-objective model that considers both the coverage degree of test case for test requirements and the capability of test cases to reveal error. Our experiment results show that the technique both reduces the size of test suite and better ensures the effectiveness of test suite to reveal error. © 2010 IEEE. Source


Muthukumar P.,Care Group Of Institutions
2014 International Conference on Circuits, Power and Computing Technologies, ICCPCT 2014 | Year: 2014

In this paper presents a Novel co-simulation of random pulse width modulation generation for three phase inverter drive by using Spartan3E500 FPGA device, in order to disperse the acoustic noise spectra of an induction motor drive is presented. This scheme is randomized by selecting the triangle arbitrarily among the two triangles. The arbitration selection is based 8 bit linear feedback shift register. The least bit of the register output decide the winning triangle which is to compare with sine reference wave to generate pulses. It presents the output fundamental voltage, THD and harmonic spread factor for various modulation indexes. In this proposed work done by using novel co-simulation methodology i.e combined simulation of Modelsim6.3f and Matlab7.10 which will reduce the design implementation time. In addition, FPGA synthesis results has been provided. © 2014 IEEE. Source


Sriram Sundars S.,Care Group Of Institutions
International Journal of Applied Engineering Research | Year: 2014

This paper deals with designing of shield the accident and that is in a position to keep up the main hindrance methodology’s and additionally it provides time basis to afford the protection from the accident, supported the transport observance and chase system exploitation advanced processor ARM 9 with the support of GSM and GPS with fully totally different modules. In bound cases, the vehicle has encountered the accident this system will afford a cheap preset ambulance salvage system for crucial the position of the accident spot through the detector systems among the vehicle to supply a sleek flow for the ambulance from the accident spot to the nearest hospitals and through the ambulance travelling time patient blood pressure and heart beat is repeatedly check to transmit the hospital control room using microcontroller. Which could management automatically the traffic lights among the trail of the ambulance, in order that the ambulance will reach the hospital safely? As this technique is totally computerized, simply just in case of freakish deeds it's going to provides the preset ambulance salvage system for saving the humans. © Research India Publications. Source


Sujitha S.,Care Group Of Institutions | Venkatesh C.,EBET Group of Institutions
International Journal of Engineering and Technology | Year: 2014

The performance of the four phases SRM is investigated especially driven by standalone PV fed module with Repression Resistor converter. Inorder to perform the good working condition of motor, the basic behavior of SRM should be researched. Because of abundant solar energy sources the application is introduced in high speed drives such as SRM in this paper. The results also compared with SRM driven by DC source offers superior performance in simulation analysis. Source

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