Vel Technology Multi Technology Engineering College

Chennai, India

Vel Technology Multi Technology Engineering College

Chennai, India
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Umanath K.,Bharath University | Umanath K.,HIGH-TECH | Palanikumar K.,Bharath University | Palanikumar K.,Sri Sai Ram Institute of Technology | Selvamani S.T.,Vel Technology Multi Technology Engineering College
Composites Part B: Engineering | Year: 2013

This paper presents the wear behaviour of Al6061-T6 discontinuously reinforced with silicon carbide (SiC) and aluminium oxide (Al2O 3) composite. The test specimens are prepared and tested as per ASTM standard. The experiments are conducted by using a pin on disc wear tester. Empirical relation is established to estimate the wear using statistical regression analysis and analysis of variance (ANOVA). The results indicated that the wear resistance of the 15% hybrid composite is better than that of the 5% composite. The fracture surface of composites shows the ductile tear ridges and cracked SiC and Al2O3 particles indicating both ductile and brittle fracture mechanism. © 2013 Elsevier Ltd. All rights reserved.


Selvamani S.T.,Anna University | Selvamani S.T.,Vel Technology Multi Technology Engineering College | Palanikumar K.,Sri Sai Ram Institute of Technology
Measurement: Journal of the International Measurement Confederation | Year: 2014

In this work, 12 mm diameter AISI 1035 grade steel rods are friction welded with an aim to optimize the process parameters. The joints are made with various process parameter combinations (incorporating ANOVA methods) subjected to tensile test. The empirical relationships are established to predict the ultimate tensile strength, notch tensile strength, and % of elongation of the welded joints. The consistency of the model has been checked. The tensile properties, micro-hardness, microstructures, SEM, and the EDAX of the welded specimens have been studied and presented in this study. © 2014 Elsevier Ltd. All rights reserved.


Selvamani S.T.,Vel Technology Multi Technology Engineering College | Palanikumar K.,Sri Sairam Institute of Technology | Shanmugam K.,Annamalai University | Divagar S.,Vel Technology Multi Technology Engineering College | Vigneshwar M.,Vel Technology Multi Technology Engineering College
ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE) | Year: 2015

The friction welding of AISI 52100 grade low chromium and high carbon steel joints are investigated in this work to evaluate the fatigue life of the joints by conducting the experiments using servo hydraulic fatigue testing machine at different stress levels. All the experiments are conducted under uniaxial tensile loading condition (stress ratio=0). Fatigue strength, fatigue notch factor (Kf) and notch sensitivity factor (q) are evaluated for the optimized joints and the relationship between tensile and fatigue properties of Fully Deformed None (FDZ) is established. Finally, the Characteristics of friction welded joint is investigated with the help of Scanning Electron Microscope and Optical Microscopy under optimized condition. Copyright © 2015 by ASME.


Selvamani S.T.,Anna University | Selvamani S.T.,Vel Technology Multi Technology Engineering College | Palanikumar K.,Anna University | Umanath K.,Anna University | And 2 more authors.
Materials and Design | Year: 2015

In this present work, the analysis of process parameters on mechanical, metallurgical and chemical properties of American Iron and Steel Institute (AISI) 1035 steel rods of 12. mm diameter joints produced by friction welding is analyzed. The joints made with various process parameter combinations are subjected to tensile tests, hardness test and cyclic potentiodynamic polarization tests. The properties such as tensile strength, notch tensile strength, yield strength, % elongation, and vickers's hardness, fully deformed zone (FDZ), flash formation and pitting corrosion has been analyzed for high level and low level process parameters. The optimized process variable is obtained by using Response Surface Methodology (RSM). The integrity of the welds has been investigated using high magnification optical microscopy. The fracture surface of the tensile test specimen is analyzed by using Scanning Electron Microscope (SEM) and Energy-dispersive X-ray spectroscopy (EDAX). © 2014 Elsevier Ltd.


Pavul Arockiyaraj P.,Vel Technology Multi Technology Engineering College | Mani P.K.,Vel Technology Multi Technology Engineering College
International Journal of Control Theory and Applications | Year: 2016

The main aim is to develop the system to distribute proper braking force to each wheel of the vehicle by using Artificial Neural Network framework. However Artificial Neural Network facilitates the system to design and improve turning abilities. The underlying control philosophy takes into a consideration steering angle and obstacle detection. This system is designed to avoid skidding under sudden turning conditions. Simulations and hardware prototype demonstrate the effectiveness of the proposed braking system. The neural network framework takes decision on braking in each wheel that depends upon environmental conditions. © International Science Press.


Selvamani S.T.,Vel Technology Multi Technology Engineering College | Divagar S.,Vel Technology Multi Technology Engineering College | Vigneshwar M.,Vel Technology Multi Technology Engineering College
International Journal of Engineering Research in Africa | Year: 2015

In this research work, the friction welding of AISI 1020 grade steel joints are fabricated to predict the minimum Vickers hardness in the joints. The response surface methodology was used to optimize the friction welding parameters in this study. RSM is a collection of mathematical and statistical techniques that are helpful for designing a set of experiments, analyzing the optimum combination of input process parameters, developing a mathematical model, and expressing the values graphically. Therefore, the response surface methodology has been utilized to optimize the friction welding process parameter with the help of ANOVA design matrix. The microstructures analyzed were carried out for the optimized condition joint. © (2015) Trans Tech Publications.


Ruban Thomas D.,Vel Technology Multi Technology Engineering College | Kuppusamy P.G.,Vel Technology Multi Technology Engineering College | Gopal B.G.,Vel Technology Multi Technology Engineering College | Senthil Kumar V.,Vel Technology Multi Technology Engineering College
International Journal of Control Theory and Applications | Year: 2016

This paper represents the design and characterization of a Nano square spiral antenna integrated on a silicon dioxide substrate. The antenna aims to crop the energy from the sun. This nano antenna acts in the desired terahertz region within the specified range of 3 to 30 THz. The antenna characteristics, specifically its resonant frequency and enhancement factor have been numerically investigated. The spiral square antenna captures the terahertz radiation. The radiation losses are much reduced to minimum level. Resonant frequency can be adjusted by varying the FSS (Frequency Selective Surfaces) parameters such as layer thickness, distribution structure and element size. High enhancement factor can be achieved by using low dielectric silicon dioxide substrate, where the unwanted reflection and scattering from the backside of the silicon is the major issue. Handling of which is the challenge work. So, use of an SOI substrate is eliminated. The proposed antenna efficiently crops the energy available from the sun. © International Science Press.


Selvamani S.T.,Vel Technology Multi Technology Engineering College | Vigneshwar M.,Vel Technology Multi Technology Engineering College | Divagar S.,Vel Technology Multi Technology Engineering College
International Journal of Engineering Research in Africa | Year: 2016

In this research work, the effects of heat transfer on microhardness, microstructures of friction stir welded AA 6061-T6 Aluminum alloy butt joints advancing side and retreating side are analyzed. A three dimensional finite element model is developed to study the thermal history in the butt welding of AA 6061 aluminum alloy using ANSYS package. Solid 70 elements are used to develop the model and a moving co-ordinate has been introduced to model the three-dimensional heat transfer process because it reduces the difficulty of modeling the moving tool. In this model, the main parameter considered is the heat input from the tool shoulder and tool pin. As a result, the temperature distributions of the weld at a welding speed of 1.25mm/sec were obtained. © 2016 Trans Tech Publications, Switzerland.


Selvamani S.T.,Vel Technology Multi Technology Engineering College | Vigneshwar M.,Vel Technology Multi Technology Engineering College | Divagar S.,Vel Technology Multi Technology Engineering College
Transactions of the Indian Institute of Metals | Year: 2016

This article deals with the armour grade AA7075-T651 metal matrix nanocomposite reinforced with SiC and Al2O3 nano particles produced by stir casting method. The produced nanocomposite rods are joined without any external source by friction welding process to understand its fatigue and tensile behaviors of its fully deformed zone. The experiments were conducted by using rotating beam fatigue testing machine at different stress levels and the joints characterization were analyzed with various advanced testing machines. The relationship between tensile and fatigue properties of joints were established. Finally, the characteristics of friction welded joint was investigated with the help of scanning electron microscope, optical microscopy analysis under optimized condition. © 2016, The Indian Institute of Metals - IIM.


Vigneshwar M.,Vel Technology Multi Technology Engineering College | Divagar S.,Vel Technology Multi Technology Engineering College | Selvamani S.T.,Vel Technology Multi Technology Engineering College
Journal of Chemical and Pharmaceutical Sciences | Year: 2015

The composites are used for a number of star war related programs but in micron level composite, there is a problem that the bonding strength between the ceramics and base metal will not be good and so in order to overcome this problem, Nano sized particles are used as reinforcement instead of micron sized particles. Metal Matrix composites (MMCs) reinforced with nanoparticles (less than 100 mm) termed as Metal Matrix Nano Composites (MMNCs) had overcome the disadvantages associated with the conventional MMCs. The application of hard Nano-sized particles are increasing because it strengthens the MMCs by enhancing its mechanical and metallurgical properties. The stir casting method is one of the known approaches used to create a uniform distribution of the reinforcement in the matrix. Therefore, in the present research work, the Metal Matrix Nanocomposites (MMNCs) are produced with an aim to study the influence of Nano SiC and Nano Al2O3 particles on AA7075-T651 high strength aluminum alloy.

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