Adhiparasakthi Engineering College

Engineering, India

Adhiparasakthi Engineering College

Engineering, India
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Senthilkumar N.,Adhiparasakthi Engineering College | Tamizharasan T.,TRP Engineering College
Arabian Journal for Science and Engineering | Year: 2014

Tool geometry selection and its optimization are complex tasks involving many considerations, since the geometries chosen will have individual influence and combined influence along with the other values on the machining process. In this investigation, geometrical parameters of cutting tool insert such as insert shape (including angle of cutting edge), relief angle and nose radius are chosen for analysis maintaining the machining parameters constant. Experiments are designed using Taguchi's design of experiment and the output quality characteristics such as flank wear, surface roughness and material removal rate (MRR) are analyzed using signal-to-noise ratio and analysis of variance. For three parameters, varied through three levels, a suitable L9 orthogonal array is chosen. Nine different ISO-designated cutting tool inserts of various shapes, relief angle and nose radius are used in this analysis. From the experimental results, it is found that cutting insert shape is the most significant factor contributing by 45.27 % followed by nose radius by 36.37 % and relief angle by 5.28 % toward the response. A confirmation experiment and finite element analysis are performed for the optimal geometrical parameters. From the investigation, considerable improvement in the performance of cutting tool insert is observed. © 2014 King Fahd University of Petroleum and Minerals.

Babuponnusami A.,Adhiparasakthi Engineering College | Muthukumar K.,Anna University
Journal of Environmental Chemical Engineering | Year: 2014

The increase in the disposal of refractory organics demands for newer technologies for the complete mineralization of these wastewaters. Advanced oxidation processes (AOPs) constitute a promising technology for the treatment of such wastewaters and this study presents a general review on such processes developed to decolorize and/or degrade organic pollutants. Fundamentals and main applications of typical methods such as Fenton, electro-Fenton, photo-Fenton, sono-Fenton, sono-photo-Fenton, sono-electro-Fenton and photo-electro-Fenton are discussed. This review also highlights the application of nano-zero valent iron in treating refractory compounds. © 2013 Elsevier Ltd.

Babuponnusami A.,Adhiparasakthi Engineering College | Muthukumar K.,Anna University
Clean - Soil, Air, Water | Year: 2011

The present work focuses on the performance of Fenton, sono-Fenton, and sono-photo-Fenton processes for the oxidation of phenol present in aqueous solution. The effects of H2O2 concentration, Fe2+ concentration, pH, and initial phenol concentration on the oxidation of phenol were studied. The optimum Fe2+ and H2O2 concentrations for the Fenton process were 45 and 800mg/L, respectively. For the sono-Fenton process, the optimum Fe2+ and H2O2 concentrations were 30 and 800mg/L, respectively. The optimal conditions for the sono-photo-Fenton process were found to be 20mg/L of Fe2+ and 700mg/L of H2O2. The optimum pH was found to be 3 for the processes investigated in the present study. The analysis of results showed that the sono-photo-Fenton method reduced the Fe2+ concentration by 30-50% and the H2O2 concentration by 12.5%. It was found that the sono-photo-Fenton technique showed better performance than the Fenton and sono-Fenton processes for the oxidation of phenol. A lumped kinetic model was used to predict the chemical oxygen demand reduction and the model was found to fit the data. Synergistic effects of sono, photo, and Fenton processes on the degradation of phenol are presented. The sono-photo-Fenton technique showed better performance than the Fenton and sono-Fenton processes for the oxidation of phenol. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Gopalakannan S.,Adhiparasakthi Engineering College | Senthilvelan T.,Pondicherry Engineering College
Measurement: Journal of the International Measurement Confederation | Year: 2013

The newly fabricated metal matrix nano-composite (MMNC) of Al 7075 reinforced with 1.5 wt% SiC nano-particles was prepared by a novel ultrasonic cavitation method. The high resolution scanning electron micrograph (SEM) and field emission scanning electron micrograph (FESEM) shows uniform distribution and good dispersion of the SiC nanoparticles within the aluminum metal matrix. Electrical discharge machining (EDM) was employed to machine MMNC with copper electrode by adopting face centered central composite design of response surface methodology. Analysis of variance was applied to investigate the influence of process parameters and their interactions. Further a mathematical model has been formulated in order to estimate the machining characteristics. It has been observed that pulse current was found to be the most important factor affecting all the three output parameters such as material removal rate (MRR), electrode wear rate (EWR) and surface roughness (SR). The optimum parameter of combination setting has been identified for the MMNC are voltage 50.00 V, pulse current 8.00 A, Pulse on time 8.00 μs and pulse off time 9.00 μs. Finally the parameters were optimized for maximizing MRR, minimizing EWR and SR using desirability function approach. © 2013 Elsevier Ltd. All rights reserved.

Babuponnusami A.,Adhiparasakthi Engineering College | Muthukumar K.,Anna University
Chemical Engineering Journal | Year: 2012

This study compares the performance of Fenton, electro-Fenton, sono-electro-Fenton and photo-electro-Fenton treatment methods on the degradation of phenol. The effect of operating parameters such as hydrogen peroxide concentration, Fe 2+ concentration, current density, initial phenol concentration and solution pH was studied. The results showed better performance with simultaneous utilization of UV irradiation and electrolysis with Fenton's reagent. Degradation efficiency was observed in the order: photo-electro-Fenton>sono-electro-Fenton>electro-Fenton>Fenton. Even though complete degradation of phenol was observed with photo-electro-Fenton and sono-electro-Fenton processes, photo-electro-Fenton process showed complete removal of phenol and 64.19% of mineralization within 30min, whereas in the case of sono-electro-Fenton process, no phenol was detected after 40min and the mineralization observed at optimum conditions was 67.93%. Fenton and electro-Fenton processes required more time for phenol degradation and mineralization. The phenol degradation kinetics was studied and compared for all the processes. The results showed higher rate constant values for sono-electro-Fenton (k ap=0.0683min -1) and photo-electro-Fenton (k ap=0.0934min -1) processes. © 2011 Elsevier B.V.

Jothi Chitra R.,Adhiparasakthi Engineering College | Nagarajan V.,Adhiparasakthi Engineering College
Computers and Electrical Engineering | Year: 2013

In this paper, we present a double L-slot microstrip patch antenna array for worldwide interoperability for microwave access (WiMAX) and wireless local area network (WLAN) applications. The Coplanar Waveguide (CPW) fed microstrip patch antenna considered in our work comprises of two rectangular patch elements each embedded on two L-shaped slots. This design results in a reduction in size and weight and allows easy integration in hand-held devices. The parametric study of the considered design shows that the radiation pattern, return loss, voltage standing wave ratio (VSWR), and gain are optimized within the band of operation. The results obtained with Ansoft HFSS simulations and real time measurements are in good agreement with each other. © 2012 Elsevier Ltd. All rights reserved.

Ramasamy V.,Adhiparasakthi Engineering College
KSCE Journal of Civil Engineering | Year: 2012

The paper presents the experimental investigation conducted on Rice Husk Ash (RHA) concrete to evaluate the compressive strength and to study its durability properties. In the preparation of rice husk concrete, cement was replaced at various percentage levels such as 5%, 10%, 15% and 20%. Besides control concrete was also prepared for comparison purpose. Two grades of concrete, namely M30 and M60, were prepared. The strength of the concrete increased with the levels of percentage of replacement of 10% at which the increase in strength was 7.07% at 90 days compared to normal concrete. In the case of M60 grade concrete the compressive strength increases with the addition of super plasticizer. In general, Saturated Water Absorption (SWA) increased in the case of RHA Concrete up to 10% replacement level, but the same diminished with addition of super plasticizer. The porosity of RHA Concrete decreased from 4.70% to 3.45% when the replacement level increased from 5% to 20%. There is a further decrease with the addition of super plasticizer. The chloride ion permeability value of RHA Concrete was very low between 100-1000 coulomles, as compared to normal concrete. It was observed from tests that RHA concrete was more resistant to HCl solution than that of control concrete. The percentage of resistance against alkaline attack of M30 grade RHA concrete varied from 25 to 67 and the corresponding value for M60 grade was from 35 to 70 for replacement levels varying from 5% to 20%. Addition of 20% RHA showed higher resistance against sulphate attack for both continuous soaking and cyclic conditions. On the whole addition of RHA as CRM improves the strength and durability properties of concrete to considerable extent. © 2012 Korean Society of Civil Engineers and Springer-Verlag Berlin Heidelberg.

Babuponnusami A.,Adhiparasakthi Engineering College | Muthukumar K.,Anna University
Environmental Science and Pollution Research | Year: 2013

This study presents the degradation of phenol by the photoelectro-Fenton method using nano zero-valent iron (nZVI) immobilized in polyvinyl alcohol-alginate beads. The effect of nZVI loading, H2O2 concentration, pH, and initial phenol concentration on phenol degradation and chemical oxygen demand reduction was studied. The scanning electron microscope images of the nZVI beads were used to analyze their morphology, and their diameters were in the range of 500-600 μm. The concentration of nZVI in the beads was varied from 0. 1 to 0. 6 g/L. Fe2+ leakage of 1 and 3 % was observed with 0. 5 and 0. 6 g/L of nZVI, respectively, and the observed beads' fracture frequency was 2 %, which confirmed the stability of the beads. The optimum operating conditions that arrived for better degradation were 0. 5 g/L of nZVI, pH 6. 2, and 400 mg H2O2/L. The treatment of effluent by this method increased the biodegradability index of the effluent, and the degradation data were found to follow pseudo first-order kinetics. © 2012 Springer-Verlag.

Radika P.,Adhiparasakthi Engineering College
Journal of Electrical Engineering and Technology | Year: 2014

This paper describes the improvement in converter efficiency by reducing the switching loss and by recovering the snubber stored energy. A capacitive based passive regenerative snubber circuit is modeled for a dc-dc boost converter. The proposed snubber is mainly used to reduce the turnoff loss of the main switch. The energy recovery process and the turn-off loss depends on the size of the snubber capacitance; therefore, the conventional and the proposed converters are designed for high and low input voltage conditions with different sizes of the snubber capacitance. Based on the results obtained, the snubber capacitors are classified as small, normal and large snubbers. The Matlab simulation results obtained are presented.

Babuponnusami A.,Adhiparasakthi Engineering College | Muthukumar K.,Anna University
Separation and Purification Technology | Year: 2012

This study presents the removal of phenol by heterogenous photo electro Fenton-like (PEF-like) system using nano-zero valent iron (NZVI). NZVI was characterized using X-ray diffraction (XRD) and Scanning Electron Microscope (SEM) analysis. The effect of initial pH, initial concentration of phenol, NZVI dosage and initial H 2O 2 concentration on phenol removal was studied. The removal efficiency was increased with an increase in NZVI dosage and decreased with an increase in initial phenol concentration and initial pH. The optimum dosage of NZVI and H 2O 2 were found to be 0.5 g/L and 500 mg/L, respectively and complete removal of phenol was observed within 30 min at these conditions at an initial pH and initial phenol concentration of 6.2 and 200 mg/L, respectively. The analysis of kinetics showed that the removal of phenol by PEF-like process followed pseudo first-order kinetics. The variation of H 2O 2 concentration during the reaction was monitored at different current densities and the optimum current density was found to be 12 mA/cm 2. © 2012 Elsevier B.V. All rights reserved.

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