Dr. Atul Kumar | Mody University Of Science And Technology (original) (raw)

Papers by Dr. Atul Kumar

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Solar technologies like flat plate solar collectors are being widely used for low-grade thermal e... more Solar technologies like flat plate solar collectors are being widely used for low-grade thermal energy for household purposes. These days, photovoltaic thermal (PV/T) collectors are also gaining momentum as source of combined heat and electric power. Commonly used base fluid in PV/T collector is water which have low thermal conductance, and thus, addition of nanoparticles in base fluid will lead to the enhancement in overall thermal conductance. Keeping this as main focus, a research has been carried out to evaluate the performance of PV/T system with different nanoparticles. For that, the simulation was carried out by performing grid test and then simulated on ANSYS to obtain results. For the same, nanofluids with 20 nm particle dimensions and 299 K inlet temperature were loaded with 0.5, 1 and 1.5% particle volume fraction with different Reynolds numbers varying from 250 to 1500. The simulated model was validated with the literature, and obtained results showed that the heat transfer coefficient (HTC) without any nanoparticles ranges from 245.5 to 519.8 W/m 2 K for Reynolds number of 250-1500, respectively. On other hand, with nanoparticles, the HTC increases and ranges between 250.6-529.20 W/m 2 K, 255.42-539.8 W/m 2 K and 261.1-550.8 W/m 2 K for 0.5%, 1.0% and 1.5% volume fraction, respectively, for Reynolds number of 250-1500. In the end, it is concluded that the simulation results are in good agreement with the literature.

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International Conference on Recent Advances in Engineering Science and Management , PHD Chamber of Commerce and Industry, New Delhi, 2015

The importance of composites as engineering materials is reflected by the fact that out of over 1... more The importance of composites as engineering materials is reflected by the fact that out of over 1600 engineering materials available in the market today more than 200 are composites. These composites initially replaced Cast Iron and Bronze alloys but owing to their poor wear and seizure resistance, they were subjected to many experiments and the wear behavior of these composites were explored to a maximum extent and were reported by number of research scholars for the past 25 years. In the present study, based on the literature review, the effect of Silicon carbide on Stir cast Aluminium Metal Matrix Composites is discussed. Aluminium Metal Matrix Composites with Silicon carbide particle reinforcements are finding increased applications in aerospace, automobile, space, underwater, and transportation applications. This is mainly due to improved mechanical and tribological properties like strong, stiff, abrasion and impact resistant, and is not easily corroded. In the present scenario, a review of different researchers have been made to consolidate some of the aspects of mechanical and wear behavior of Aluminium Metal Matrix Composites reinforced with Silicon carbide particles in both untreated and precipitation hardened condition.

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International Journal of Mechanical and Production Engineering Research and Development (IJMPERD), 2017

In today's competitive world, the industries should have production systems which are capable of ... more In today's competitive world, the industries should have production systems which are capable of versatility, high production rate, precision and ability to produce highly finished goods. Due to this the value of input machining parameters responsible for the desired material removal rate becomes critical. In this thesis an experimental study is done in order to optimize and analyze the effects of process parameters in CNC end milling of Al 2024-SiC work material on material removal rate. Four machining parameters cutting speed, feed rate, depth of cut and number of flutes of the end mills are used. The experimentation plan is based upon the design matrix as per the Taguchi optimization technique's orthogonal arrays. The predicted values of the output responses are calculated with the help of Minitab-14 software. The results are also verified with the help of confirmation experiments. The experiment is conducted by Al 2024-SiCp stir cast plates. The processing of the job is done by solid carbide two, three and four fluted ends-mill tools under finishing conditions. The experimental matrices are designed using an L-27 orthogonal array as suggested by Taguchi methodology and the analysis of variance (ANOVA) for analyzing the performance characteristics.

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Survey on End Milling of Al2024-SiCp Metal Matrix Composite

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Journal of Mechanical and Production Engineering (JMPE), 2016

The substantial use of aluminum reinforced with silicon carbide composites in various structural ... more The substantial use of aluminum reinforced with silicon carbide composites in various structural applications has led to the need of finding a efficient technical production techniques for these composites. Uniformity, machinability and intra-grain reactions of the constituents represent the most problems related to these composites. Production of uniform and strong components made from aluminum-silicon carbide composites can be achieved with the help of stir casting. Metal Matrix Composites (MMCs) have developed a high interest in modern times for potential applications in aeronautical and automobile industries. Achievement of a uniform distribution of reinforcement in the matrix is difficult and it has direct effect on the properties of the composite. Present thesis attempts to develop aluminum based silicon carbide particulate Metal Matrix Composites. Aluminum (Al2024) has been chosen as matrix and SiC (320-grit) as reinforcement material. Trials are done by changing the weight fraction of SiC (10% &15%), while other parameters are kept constant. An increase in hardness and strength has been observed with the increase in weight percentage of SiC. The results were further justified by comparing with other investigators.

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WALIA Journal, 2016

The quality of the surface finish of the machined job is one of the most important product qualit... more The quality of the surface finish of the machined job is one of the most important product quality characteristics. In the present study the Taguchi methodology has been used for modelling and optimization of surface roughness in end milling of aluminium silicon carbide composite plates (Al2024-SiCp) using carbide end mills. Four machining parameters, the spindle speed (rev. /min.), the feed rate (mm/min.), the depth of cut (mm) and number of flutes were used in the experiment. The average surface roughness (Ra) was chosen as a measure of surface quality. The experiment was designed and carried out on the basis of standard L27 Taguchi orthogonal array. The data set of the experimental values was used for conducting the optimization using Taguchi design methodology. The results of calculations were in good agreement with the experimental data. A minor discrepancy between the experimental results and calculations could be inferred due to the presence of random errors and uncontrollable errors of the machining process, as well as environmental effects. Using Taguchi method for design of experiment (DOE), other significant effects such as the interaction among milling parameters are also investigated.

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International Journal of Advance Engineering and Research Development, 2017

The present work makes an attempt to analyzevarious parameters of end milling in order to minimiz... more The present work makes an attempt to analyzevarious parameters of end milling in order to minimize the surface roughness and to maximize the material removal rate (MRR) of Al 2024-SiC composite. Al2024-SiC is generally used in manufacturing high strength parts of aircrafts and machinery, fuselage structural wing tension members, wing skins, engine parts subjected to high temperaturesincluding gears and bolts and for security vans where strength is critical. The quality of the machined surface, i.e., surface finish and texture affects the function, appearance and reliability of a product. On the other hand higher production rate is possible when MRR is maximum. But higher MRR leads to lower surface finish, so a tradeoff between Surface finish and MRR is needed. In this work, the optimal selection of process parameters have been done in order to obtain optimized response output parameters namely surface roughness and MRR by using Taguchi's technique. And ANOVA analysis. In machining operations, achieving desired surface quality is a bit difficult as these quality structures are influenced by the effect of process parameters and their interactions. However, the amounts of influence of the process parameters vary for different processes. Therefore, optimization of surface roughness and MRR is a multi-factor and multi-objective optimization which is carried out successfully by the help of Taguchi optimization technique.

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International Journal of Mechanical and Production Engineering Research and Development

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International Journal of Applied Engineering Research (IJAER),

In today's competitive world, the industries should have production systems which are capable of ... more In today's competitive world, the industries should have production systems which are capable of versatility, high production rate, precision and ability to produce highly finished goods. Due to this the value of input machining parameters responsible for the desired surface finish & material removal rate becomes critical. Present paper presents a study on parametric optimization of the End Milling machining of Al2024-SiC metal matrix composite on quality characteristics namely surface roughness and material removal rate using Taguchi Technique. The end milling parameters selected is speed, feed, depth of cut and number of flutes. How these parameters influence the response outputs like MRR and surface roughness is analysed with the help of Taguchi Technique and ANOVA. At the same time various statistical plots are generated with the help of MiniTab software like residual plots, contour plots and surface plots. Twenty seven experimental runs based on design of experiments and L27 orthogonal array of Taguchi method are performed and data so obtained is used to subsequently applied to determine an optimal end milling parameter combination. Finally, confirmation tests carried out at optimum cutting conditions to make a comparison between the experimental results and developed model. The predicted results are found to be closer to experimental results by confirmation test. After this the results of Taguchi optimization are compared with the statistical plots found to be in close conformity with each other.

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Civil Engineering structures have to withstand natural environmental forces like wind, earthquake... more Civil Engineering structures have to withstand natural environmental forces like wind, earthquake forces and wave forces, along with loads that they are designed to resist. All this environmental forces are random and dynamic in nature. Therefore the response of the structure is also dynamic and that is what causes the unsafe and uncomfortable conditions. Therefore there is always a need for some sort of control of response of structure. This project aims at studying both methods of the Tuned Mass Dampers. It has been well established that Single tuned mass damper (STMD) and multiple tuned mass damper (MTMD) are effective in reducing the response of the structure. The project aims and study of two devices, the Single Tuned Mass Damper and Multiple Tuned Mass Damper using new control strategy. The tuned mass dampers, consisting of one larger mass block (i.e. one larger tuned mass damper) and one smaller mass block (i.e. one smaller tuned mass damper), referred in this report as the STMD, have been studied to seek for the mass dampers with high effectiveness and robustness for the reduction of the undesirable vibrations of structures under the ground acceleration. Multiple tuned mass dampers (MTMD) consisting of many active tuned mass dampers (TMDs) with uniform distribution of natural frequencies have been, proposed to attenuate undesirable oscillations of structures under the ground acceleration.

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International Journal of Applied Engineering Research

In this paper a Research Institute Building model is chosen for energy simulation. In order to ac... more In this paper a Research Institute Building model is chosen for energy simulation. In order to achieve this aim, building energy simulation Design Builder (DB) software is used to carry out a series of sensitivity analysis on set of design parameters, with an aim to achieve a comfortable and energy efficient building. To evaluate the energy consumption compared base case building model and ECBC building model and it is found that yearly energy consumption can be reduced by approximately 27.3% by designing ECBC buildings.

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International Journal of Engineering Science and Technology (IJEST), 2011

The surface roughness plays an important role in product quality and manufacturing process planni... more The surface roughness plays an important role in product quality and manufacturing process planning, which is also a technical requirement. The effects of turning process parameters on surface roughness have been analyzed. The main effects (independent parameters), quadratic effects (square of the independent variables), and interaction effects of the variables have been considered separately to build best subset of the model. Three different values of the feed, three values of the depth of cut, two different types of cutting tools have been used to generate a total 18 readings in a single set. Three different types of work piece material have been used for the experimentation, which generates a total 54 readings of the data. After having the data from the experiments, output (surface roughness, Ra) of the test samples was taken on a Taylor Hobson made Talysurf surface roughness tester. To analyze the data set, statistical tool of MATLAB (Software) has been used to reduce the manipulation and help to arrive at proper improvement plan of the Manufacturing process & Techniques. Feed and depth of cut has a major effect on the surface roughness. Hypothesis testing was also done to check the goodness of fit of the data. A comparison between the observed and predicted data was made, which shows a close relationship..

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IAEME Publication

Single cylinder crankshaft is basic for other internal combustion engine crankshaft since it has ... more Single cylinder crankshaft is basic for other internal combustion engine crankshaft since it has one crankpin, two crank web and journals at both ends. The large size crankshaft needs more energy than that of small size. So, optimization takes place by varying geometry of selected parameters. The main objective of this study was to investigate possibility of weight and cost reductions of a typical crankshaft without scarifying the desired performances under dynamic loading condition. For a successful completion of this research, the dynamic load analysis of a crankshaft rotating in internal combustion engine was evaluated. Using this loads as input for finite element method (FEM) determine the stress distribution by ANSYS software and compare with analytical result. On the other hand the percentage weight of crankshaft reduced in this research work is 4.16%.

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International Journal of Mechanical Engineering and Technology, 2018

Tool and Die design and its manufacturing were developing at a very rapid pace. Delivering qualit... more Tool and Die design and its manufacturing were developing at a very rapid pace. Delivering quality tools at right time is a challenging task for manufacturing organizations. A typical case study of computer aided closed die design and manufacturing for open end wrench and corresponding trimming fixture design steps are explained. The purpose of this paper is to formulate a standard procedure computer aided closed die design and manufacturing for open end wrench. Hot work die steels are commonly used for hot forging dies subjected to temperatures ranging from 1100 to 1200 °C. These materials contain chromium base steels contain chromium and tungsten. Alloying elements which have hardening characteristics and resistance to abrasion and softening, such as H11 or H13, H14 are used for the critical die works. Moreover, the trimming die or bottom die can be used from D2 tool steel that has a high strength alloy hard face applied to the cutting edge. Forging die design procedures were sequentially used to produce computer aided closed die design and manufacturing tools. This includes the creation of final forged product model, Blocker model, Bender and Flattener model before extracting the die profile. Trimming fixture will trim and give finished part. Basically all this procedure can be standardized and utilized for various product varieties. The results of the research are shown as 3D model views and 2D drawings. The 3D model creative are finisher model, blocker model, wrench assembly layout, top and bottom die and trim fixture are the result of this work. Computer Aided Closed Die Design and Manufacturing for Open End Wrench

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IAEME Publication, 2018

A theoretical study has been carried out to get the effect of collector length on the heat transf... more A theoretical study has been carried out to get the effect of collector length on the heat transfer rate and pressure drop characteristics of a wavy finned solar air heater. The flow channel was formed by two transversely positioned wavy fins attached belo the absorber plate and the top surface is subjected to uniform heat flux. The effect of mass flow rate and collector length of wavy finned solar air heater was investigated. By investigation it has been known that increasing the length of collector total useful energy gain and drop in pressure increases. However, the thermal efficiency of solar air heater decreases. Moreover, outlet air temperature at lower mass flow rate increases and reduce pressure drop. At mass flow rate of 0.0139 kg/s the press drop for the wavy fin solar air heater increases from 4.02% to 23.5%. Meanwhile the outlet air temperature due to wavy fin increases at the cost of pressure drop and overall efficiency increases. It has been also noticed that outlet temperature of air increase with collector length but it is ineffective beyond rate of 0.05kg/s for the wavy air heater. A theoretical study has been carried out to get the effect of collector length on the heat transfer rate and pressure drop characteristics of a wavy finned solar air heater. The flow channel was formed by two transversely positioned wavy fins attached belo the absorber plate and the top surface is subjected to uniform heat flux. The effect of mass flow rate and collector length of wavy finned solar air heater was investigated. By investigation it has been known that increasing the length of collector total useful energy gain and drop in pressure increases. However, the thermal efficiency of solar air heater decreases. Moreover, outlet air temperature at lower mass flow rate reduce pressure drop. At mass flow rate of 0.0139 kg/s the press drop for the wavy fin solar air heater increases from 4.02% to 23.5%. Meanwhile the outlet air temperature due to wavy fin increases at the cost of pressure drop and overall efficiency increases. It has been also noticed that outlet temperature of air increase with collector length but it is ineffective beyond rate of 0.05kg/s for the wavy Wavy fin, Collector length, Pressure drop, Solar air heater. A theoretical study has been carried out to get the effect of collector length on the heat transfer rate and pressure drop characteristics of a wavy finned solar air heater. The flow channel was formed by two transversely positioned wavy fins attached below the absorber plate and the top surface is subjected to uniform heat flux. The effect of mass flow rate and collector length of wavy finned solar air heater was investigated. By investigation it has been known that increasing the length of collector total loss, useful energy gain and drop in pressure increases. However, the thermal efficiency of solar air heater decreases. Moreover, outlet air temperature at lower mass flow rate reduce pressure drop. At mass flow rate of 0.0139 kg/s the pressure drop for the wavy fin solar air heater increases from 4.02% to 23.5%. Meanwhile the outlet air temperature due to wavy fin increases at the cost of pressure drop and overall efficiency increases. It has been also noticed that outlet temperature of air increase with collector length but it is ineffective beyond rate of 0.05kg/s for the wavy Ajeet Kumar, Atul Kumar, GangindlaBheemanna and Gautam Prasad, Thermal and Pressure Drop Analysis of Solar Air Heater with and Without Technology, 9(12),

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5International Journal of Mechanical and Production Engineering Research and Development (IJMPERD), 2019

Analysis of thermal performance analysis on the staggered fin solar air heater has been carried o... more Analysis of thermal performance analysis on the staggered fin solar air heater has been carried out theoretically in this paper. Thermal efficiency indicates the part by which incident solar energy is converted to useful work output on the other hand thermohydrauic efficiency inform about the fraction of incident energy transformed to desired need. A analytical study has been carried out to investigate the number of effect of system and various operational parameters i.e. space between fins, vertical length of fin, mass flow rate of air and insolation 960 W/m2 on the thermal and thermohydraulic efficiency. The analytical approach provides adequate information of the performance of offset finned solar air heater and it helps in designing such types of solar air heater. The analytical methodology gives sufficient premonition of the execution of offset finned solar air heater and it very well may be useful in designing such kinds of solar air heater.

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International Conference on Recent Advances in Engineering Science and Management , PHD Chamber of Commerce and Industry, New Delhi, 2015

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International Journal of Mechanical and Production Engineering Research and Development (IJMPERD), 2017

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Survey on End Milling of Al2024-SiCp Metal Matrix Composite

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Journal of Mechanical and Production Engineering (JMPE), 2016

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WALIA Journal, 2016

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International Journal of Advance Engineering and Research Development, 2017

Bookmarks Related papers MentionsView impact

International Journal of Mechanical and Production Engineering Research and Development

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International Journal of Applied Engineering Research (IJAER),

In today's competitive world, the industries should have production systems which are capable of ... more In today's competitive world, the industries should have production systems which are capable of versatility, high production rate, precision and ability to produce highly finished goods. Due to this the value of input machining parameters responsible for the desired surface finish & material removal rate becomes critical. Present paper presents a study on parametric optimization of the End Milling machining of Al2024-SiC metal matrix composite on quality characteristics namely surface roughness and material removal rate using Taguchi Technique. The end milling parameters selected is speed, feed, depth of cut and number of flutes. How these parameters influence the response outputs like MRR and surface roughness is analysed with the help of Taguchi Technique and ANOVA. At the same time various statistical plots are generated with the help of MiniTab software like residual plots, contour plots and surface plots. Twenty seven experimental runs based on design of experiments and L27 orthogonal array of Taguchi method are performed and data so obtained is used to subsequently applied to determine an optimal end milling parameter combination. Finally, confirmation tests carried out at optimum cutting conditions to make a comparison between the experimental results and developed model. The predicted results are found to be closer to experimental results by confirmation test. After this the results of Taguchi optimization are compared with the statistical plots found to be in close conformity with each other.

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International Journal of Applied Engineering Research

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International Journal of Engineering Science and Technology (IJEST), 2011

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IAEME Publication

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International Journal of Mechanical Engineering and Technology, 2018

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IAEME Publication, 2018

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5International Journal of Mechanical and Production Engineering Research and Development (IJMPERD), 2019

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