Malnad College of Engineering
Hassan, India

Malnad College of Engineering is an engineering college located in Hassan, Karnataka, India. It was established in 1960, during the second 5 year plan of India, as a joint venture between the Government of India, Government of Karnataka and the Malnad Technical Education Society, Hassan. The institution is affiliated with the Viswesvaraya Technological University in Belgaum.The college is built on a campus of about 44 acres and is a technical education center. The college has earned the ISTE Award as one of the best engineering colleges in the country, in 2007. Wikipedia.

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Sanjay M.,Malnad College of Engineering | Yogesha B.,Malnad College of Engineering
Materials Today: Proceedings | Year: 2017

Hybridization of natural/glass fiber reinforced polymer composites has been developing to build their applications in the field of engineering and technology. Present study deals with recent developments of natural fiber reinforced polymer hybrid composites made by hand lay-up and compression molding techniques. This investigation is to understand an outline of the results presented on the incorporation of natural fiber with glass fiber reinforced polymer composites. It focuses the attention in terms of physical and mechanical characteristics of hybrid composites and related studies have cited. Hybrid composites made of two different natural fibers with glass fiber are less widespread comparable to natural/glass fiber, yet it prompts grow the applications. © 2017 Elsevier Ltd. All rights reserved.

Lingappa M.S.,Malnad College of Engineering | Srinath M.S.,Malnad College of Engineering | Amarendra H.J.,Malnad College of Engineering
Materials Today: Proceedings | Year: 2017

Increasing attention is being given to reduce energy consumption and processing time, in conventional melting of metals. The conventional melting of metals has many problems viz. quality of melting, process cost, environmental issues. In the present study an attempt has been made to melt 60Sn40Pb alloyusing microwave hybrid heating technique by exposing the sample to microwave radiations for 5 minutes, carried out in a domestic microwave oven at 2.45 GHz and 900W. The study has been carried out to overcome the drawbacks of conventional melting of metals. The cast metal is investigated under Scanning Electron Microscope (SEM), Elemental Displacement Spectroscope and X-Ray Diffraction (XRD). The microstructure reveals the dispersion of Pb in Sn matrix. XRD graph confirms the presence of various oxides. © 2017 Elsevier Ltd. All rights reserved.

Jyothi N.S.,Malnad College of Engineering
2016 IEEE Uttar Pradesh Section International Conference on Electrical, Computer and Electronics Engineering, UPCON 2016 | Year: 2017

Resin Impregnated Paper (RIP) is increasingly used in transformer bushings in the recent past. The overall reliability of a high voltage power transformer largely depends on the sound operation of the bushing. RIP insulation is relatively a new entity in the field of high voltage bushing. Hence, it is essential to ensure life of the bushing by conducting destructive or non-destructive type of life estimation studies. This paper reports the result of a life estimation study of RIP bushing based on partial discharge monitoring. The stepped stress model, the concept of abstract damage proposed by Miner, is extended to analyse the degradation of electrical insulation. Partial discharge data measured for a long period of 480 days under stepped stress is used for this analysis. © 2016 IEEE.

Srinath M.,Malnad College of Engineering | Hebbale A.M.,NMAM Institute of Technology
Materials Today: Proceedings | Year: 2017

The stainless steel AISI-420 widely used in the manufacture of brake discs, turbine blades, piston submerged in water pumps, injection molds.etc. The present work deals with slurry erosive wear studies of cobalt based clads developed through microwave energy in a domestic microwave oven equipped with 900 W power at 2.45 GHz.The developed clads were subjected to microstructure and sand slurry erosive wear studies were carried out. Taguchi orthogonal array L9 was used to gauge the factors affecting the wear significantly. The influence of various factors such as speed, particle size and impingement angle on wear behavior was evaluated by means S/N ratio. This study reveals the slurry speed had significantly influenced the mass loss of the developed surfaces. The most popular and highly reliable analytical technique Fuzzy logic model has been successfully used to predict the slurry erosive wear behavior. The predicted values have been compared with the experimental data. The obtained average percentage error between experimental and fuzzy logic values are 13.80%. © 2017 Elsevier Ltd.

Arpitha G.R.,Malnad College of Engineering | Yogesha B.,Malnad College of Engineering
Materials Today: Proceedings | Year: 2017

This article presents an overview of the mechanical properties like tensile, flexural, impact, fracture surface observations and corresponding modulus of elasticity of natural fiber reinforced polymer composites. Natural fibers have recently become attractive to scientists and researchers as good alternative for fiber reinforced composites because of their low cost, non-abrasive and eco-friendly nature. Natural fibers may play an important role in developing biodegradable composites to resolve the current ecological and environmental problems. In connection with brief overview has been carried out on natural fibers because these are abundantly available in India. This article shows that the natural fibers are also possesses good mechanical properties and these fiber composites can also be used in different applications. © 2017 Elsevier Ltd. All rights reserved.

Hebbale A.M.,NMAM Institute of Technology | S S.M.,Malnad College of Engineering
Materials Today: Proceedings | Year: 2015

In the present work microwave cladding technique was progressed for enhancement of surface properties of high speed steel (SS-304). The experiments were conducted in domestic microwave oven with the help of Al2O3 shield. The clad of thickness, approximately 1mm was developed by microwave exposure at frequency 2.45GHz. The entire setup was exposed to microwave environment for about 1080s. The developed clads were characterized using FE-SEM, EDS, XRD and measurement of Vicker's microhardness. Microstructural study reveals that there is a metallurgical bond with SS-304 substrate & partial diffusion of constituent elements. Chromium was observed segregated around the cell boundaries while iron and nickel were identified inside the cells. © 2015 Elsevier Ltd.

Panduranga H.T.,University of Mysore | Naveen Kumar S.K.,University of Mysore | Kiran,Malnad College of Engineering
European Physical Journal: Special Topics | Year: 2014

In this paper we presented a image encryption based on permutation-substitution using chaotic map and Latin square image cipher. The proposed method consists of permutation and substitution process. In permutation process, plain image is permuted according to chaotic sequence generated using chaotic map. In substitution process, based on secrete key of 256 bit generate a Latin Square Image Cipher (LSIC) and this LSIC is used as key image and perform XOR operation between permuted image and key image. The proposed method can applied to any plain image with unequal width and height as well and also resist statistical attack, differential attack. Experiments carried out for different images of different sizes. The proposed method possesses large key space to resist brute force attack. © 2014 EDP Sciences and Springer.

Vishwanath H.,Malnad College of Engineering | Maruthi G.S.,Smt. L V Government Polytechnic
Energy Procedia | Year: 2012

The contents of this paper reports an experimental investigation carried out to detect the air gap eccentricity faults under varying load conditions using non-invasive transducers to monitor the current and vibration signals as a diagnostic medium. Experimental results of vibration signature analysis using Micro-Electro-Mechanical Systems (MEMS) accelerometer and Motor Current Signature Analysis (MCSA) using Hall Effect current transducers are compared and found nearly common signatures. Spectral analysis is carried out using decimation in time Fast Fourier Transform algorithm using FFT analyzer. This study also examines the usefulness of vibration signature analysis using MEMS to detect the eccentricity faults in developing a compact, miniaturized and cost effective instrument. © 2011 Published by Elsevier Ltd.

Shashidhara Y.M.,Malnad College of Engineering | Jayaram S.R.,Malnad College of Engineering
Tribology International | Year: 2010

A review is made here to understand the application of vegetable oils as potential metal working fluids. The study highlights the contributions from more than sixty authors on vegetable based oils as emerging environmental friendly cutting fluids. The performance of these oils as emulsions and straight oils for various materials and machining conditions are reported. The study focuses on the evolution of vegetable oils as cutting fluids in manufacturing sector, particularly, metal cutting and metal forming. It is observed that, most of the contributions are directed to develop and commercialise the cutting fluids based on vegetable oils. However, soyabean, sunflower and rapeseed seem to possess the relevant properties as a potential cutting fluid. © 2009 Elsevier Ltd. All rights reserved.

Partha M.K.,Malnad College of Engineering
Applied Mathematics and Mechanics (English Edition) | Year: 2010

In this paper, the natural convection in a non-Darcy porous medium is studied using a temperature-concentration-dependent density relation. The effect of the two parameters responsible for the nonlinear convection is analyzed for different values of the inertial parameter, dispersion parameters, Rayleigh number, Lewis number, Soret number, and Dufour number. In the aiding buoyancy, the tangential velocity increases steeply with an increase in the nonlinear temperature parameter and the nonlinear concentration parameter when the inertial effect is zero. However, when the inertial effect is non-zero, the effect of the nonlinear temperature parameter and the nonlinear concentration parameter on the tangential velocity is marginal. The concentration distribution varies appreciably and spreads in different ranges for different values of the double dispersion parameters, the inertial effect parameter, and also for the parameters which control the nonlinear temperature and the nonlinear concentration. Heat and mass transfer varies extensively with an increase in the nonlinear temperature parameter and the nonlinear concentration parameter depending on Dacry and non-Darcy porous media. The variation in heat and mass transfer when all the effects, i.e., the inertial effect, double dispersion effects, and Soret and Dufour effects, are simultaneously zero and non-zero. The combined effects of the nonlinear temperature parameter, the nonlinear concentration parameter and buoyancy are analyzed. The effect of the nonlinear temperature parameter and the nonlinear concentration parameter and also the cross diffusion effects on heat and mass transfer are observed to be more in Darcy porous media compared with those in non-Darcy porous media. In the opposing buoyancy, the effect of the temperature parameter is to increase the heat and mass transfer rate, whereas that of the concentration parameter is to decrease. © Shanghai University and Springer-Verlag Berlin Heidelberg 2010.

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