Optimization Analysis of H-13 Alloy using EDM by Taguchi Method

Volume 9 Issue 3 May - July 2019

Research Paper

Optimization Analysis of H-13 Alloy using EDM by Taguchi Method

Hareendranath Mada*, R. J. V. Anil Kumar**

*_** Department of Mechanical Engineering, Jawaharlal Nehru Technological University, Anantapuramu, Andhra Pradesh, India.

Mada, H., and Kumar, R. J. V. A. (2019). Optimization Analysis of H-13 Alloy using EDM by Taguchi Method. i-manager’s Journal on Mechanical Engineering, 9(3), 42-49. https://doi.org/10.26634/jme.9.3.16037

Abstract

The non-conventional machining methods are used for machining very hard materials and to prepare difficult shapes. Electrical discharge machining (EDM) is the most commonly used non-conventional machining processes for machining hard and brittle materials with good accuracy. Tool steel is an alloy of steel which is used for applications like die preparation, tool preparation etc. In this work, H-13 alloy of tool steel is selected for machining to find out Surface Roughness and Material Removal Rate (MRR) through EDM. It is also proposed to optimize EDM process parameters. The process parameters for optimisation are pulse on time, pulse off time, current, material removal rate and surface roughness. To optimize the process parameters Taguchi L9 Orthogonal array were used.

Design and Analysis of First Stage Rocket Engine using Butane and Liquid Oxygen

Volume 9 Issue 3 May - July 2019

Research Paper

Design and Analysis of First Stage Rocket Engine using Butane and Liquid Oxygen

0*

Department of Mechanical Engineering, Institute of Engineering and Management, Kolkata, West Bengal, India.

Majumder, S. D. (2019). Design and Analysis of First Stage Rocket Engine using Butane and Liquid Oxygen. i-manager’s Journal on Mechanical Engineering, 9(3), 32-41. https://doi.org/10.26634/jme.9.3.15806

Abstract

The manuscript demonstrates the designing of a first stage rocket engine using butane as a fuel and liquid oxygen as the oxidizer combination for yielding higher values of heat of combustion, Mach number, specific Impulse and the exit velocity through the nozzle. The purpose of this research is to provide a fuel oxidizer combination whose heat of combustion would be much higher. With a higher calorific value of butane, it needs very little oxidizer to burn resulting in reducing the weight of the rocket. Chemical Experimental Analysis has shown that the calorific value of butane and liquid oxygen together will yield much higher values in comparison to that of the present combination of fuel and oxidizers. The research paper analyses the design calculations of the space shuttle engine; Solid Works Design of complete Rocket Engine; comparative study of the model rocket with the Orion test rocket; CFD analysis of Rocket Engine.

Investigation of Surface Roughness on Hybrid Composites using Stir Casting Technique

Volume 9 Issue 3 May - July 2019

Research Paper

Investigation of Surface Roughness on Hybrid Composites using Stir Casting Technique

P. Saritha*, A. Satyadevi**, P. Ravikanth Raju***

*_** Department of Mechanical Engineering, GITAM University, Hyderabad, Telangana, India.

*** Department of Mechanical Engineering, Anurag Group of Institutions, Hyderabad, Telangana, India.

Saritha, P., Satyadevi, G., and Raju, P. R. (2019). Investigation of Surface Roughness on Hybrid Composites using Stir Casting Technique. i-manager’s Journal on Mechanical Engineering, 9(3), 26-31. https://doi.org/10.26634/jme.9.3.15891

Abstract

This paper brings out the results of hybrid composites produced by stir casting process. The material which is stir casted are processed by facing and turning operation using CNC machine in which turning, facing, step turning and milling operation are carried without changing the tools and workpiece in one setup. The metal removal takes place by varying speed and feed of the machine on work pieces. For modeling and enhancing performance of manufacturing technologies numerical methods are used. Optimum machining parameters plays a significant role in deciding the economy of work piece. The present work is aimed to find the optimal process parameters of hybrid composites during turning procedure. As it has wide applications in space and bearings this composites has been taken as work materials. To know the ideal process parameters, intellectual assessment tools are applied. In this work the Surface Roughness (Ra)  of the three sample work pieces of hybrid composites were prepared by keeping 3% molybdenum disulphide constant and 5%, 10%, 15% varying silicon carbide reinforced with Al7075. The experiment have been planned according to Taguchi's L9 (3)3 .

A Study on Tribological Behaviour of Nanocoated Piston Ring

Volume 9 Issue 3 May - July 2019

Research Paper

A Study on Tribological Behaviour of Nanocoated Piston Ring

Ravindra M. Kanase*

Department of Automobile Engineering, Padmashri Dr. VitthalraoVikhe Patil, Institute of Technology & Engineering(Polytechnic) Pravaranagar, Loni, Ahmednagar, Maharashtra, India.

Kanase, R. M. (2019). A Study on Tribological Behaviour of Nanocoated Piston Ring. i-manager’s Journal on Mechanical Engineering, 9(3), 19-25. https://doi.org/10.26634/jme.9.3.15913

Abstract

The nanopartical material coating can help to improve performance and life of Internal combution automobile engines by reducing the frictional wear and friction between IC engine components. In this research study tribological properties of titanium dioxide (TiO2) nanocoatings for piston ring application are investigated. Nanocoating Samples were prepared by sol-gel process of varying dipping and drying process cycles (40, 50, 60 and 70).In this reaserch studyof frictional wear have carried out on Pin on Disc Tribometer and the tests were taken in varying load and speed. The obtained results shows that TiO2 Nanocoating exhibits good friction reduction and anti-wear properties andalso decreased the coefficient of friction by 4% and 8% at 60 and 70 dipping-drying process cycles respectively, as compared with conventional chromium platting.Also the micrographs of worn surfaces analyzed by using Scanning Electron Microscopy (SEM). 

Experimental Investigation and Optimization of Machining Parameters in Milling of Al6351 Using Hybrid – Artificial Bee Colony Algorithm

Volume 9 Issue 3 May - July 2019

Research Paper

Experimental Investigation and Optimization of Machining Parameters in Milling of Al6351 Using Hybrid – Artificial Bee Colony Algorithm

P. Hema*, G. Padmanabhan**, T. Eswar***

*_*** Department of Mechanical Engineering, S. V. University college of Engineering, Tirupati, Andhra Pradesh, India.

Hema, P., Padmanabhan, G., and Eswar, T. (2019). Experimental Investigation and Optimization of Machining Parameters in Milling of Al6351 Using Hybrid – Artificial Bee Colony Algorithm. i-manager’s Journal on Mechanical Engineering, 9(3),9-18. https://doi.org/10.26634/jme.9.3.16059

Abstract

Simplifying any process of machining is a profoundly difficult, since it basically includes forecasts of ideal cutting parameters and working requirements that are unpredictable and extremely non-linear in nature which influence the overall production costs and workpiece quality. One of the Nature Inspired Algorithms (NIA) is Artificial Bee Colony (ABC) algorithm for process optimization that imitates honey bees intelligent foraging behavior. This paper describes an experimental study of cutting parameters optimization like Cutting Speed, Feed rate, Aluminum Alloy 6351 response depth cut by using Swarm-based optimization. Based on Taguchi design of experiments L18 orthogonal array is selected with three levels of input parameters at various machining conditions. The experiments are performed and predicted the responses like Surface Roughness, Material Removal Rate, Resultant Forces and Temperature. A recent evolutionary heuristic swarm intelligence algorithm called the Hybrid Artificial Bee Colony (HABC) is used to optimize conventional milling processes. This algorithm is used to minimize responses by estimating the optimum parameters of the process. Comparison of the results with the Harmony Search Algorithm (HSA), Particle Swarm Optimization (PSO) and Genetic Algorithm (GA) are done to examine the performances of various methods. The results suggest that the HABC algorithm outperforms the solution's HSA, PSO and GA quality. Additionally, Multi-Objective Optimization is performed and a combined normalized objective function (Z) is formulated by considering equal weightages to all the objectives. The optimized values of milling parameters are obtained through the HABC algorithm. Confirmatory experiments reveal that the experimental values are moderately close with optimized values.

Thermoeconomic Analysis of a Single Effect Mechanical Vapor Compression Desalination Unit

Volume 9 Issue 3 May - July 2019

Research Paper

Thermoeconomic Analysis of a Single Effect Mechanical Vapor Compression Desalination Unit

Giuma Fellah*

Department of Mechanical and Industrial Engineering, University of Tripoli, Libya.

Fellah, G. (2019). Thermoeconomic Analysis of a Single Effect Mechanical Vapor Compression Desalination Unit. i-manager’s Journal on Mechanical Engineering, 9(3),1-8. https://doi.org/10.26634/jme.9.3.15797

Abstract

In this work, the thermoeconomic analysis is performed to assess the performance of a single effect-mechanical vapor compression desalination unit. Thermoeconomic equations based on Specific Exergy Costing (SPECO) method are developed for the analysis. The results show that the unit cost of the product distillate water is 2.59 $/m3 which is in a good agreement with that given in the literature. The effect of the escalation factor of the chemicals' cost on the product unit cost of the fresh water is investigated. The unit price of the product jumps to 3.56$/m3 at escalation factor of 7%. The influence of the compressor efficiency on the specific energy consumption and effectiveness is also investigated. The results show that there is an optimum compressor efficiency at which the product unit price is a minimum.

Flow Behavior on Elbow with Various Geometries of Nozzle

Volume 9 Issue 2 February - April 2019

Research Paper

Flow Behavior on Elbow with Various Geometries of Nozzle

G. Satish*, M. Akhil Yuvaraj**

* Associate Professor, Department of Mechanical Engineering, Pragati Engineering College, Andhra Pradesh, India.

** UG Scholar, Department of Mechanical Engineering, Pragati Engineering College, Andhra Pradesh, India.

Satish, G., and Yuvaraj, M. A. (2019).Flow Behavior on Elbow with Various Geometries of Nozzle. i-manager’s Journal on Mechanical Engineering, 9(2), 43-51. https://doi.org/10.26634/jme.9.2.15851

Abstract

Elbow is one of the most common components in the pipe line system, where pressure difference occurs as a fluid flow.Due to the pressure difference, centrifugal force is developed. For this reason, the behaviour of the fluid flow in a 90° elbow for different geometries of nozzle have been studied using the FLUENT software. Ten different models were investigated based on the K-ɛ model of the energy equation. The analysis was simulated in terms of the velocity and pressure contours and comparison is done. The analysis has been done for 10 different models with changing the angle of convergence from 0° to 90° and found that the velocity gradients are increasing and pressure gradients are decreasing in an ascending order of the angles of convergence for nozzle geometry. The software values are compared to the regression values and found to yield good agreement with the simulated values.

Impact of Weld Parameters for Indirect Spot Welding and its Behavior for Sheet Metal Fabrication Industries

Volume 9 Issue 2 February - April 2019

Research Paper

Impact of Weld Parameters for Indirect Spot Welding and its Behavior for Sheet Metal Fabrication Industries

Kancha Sammaiah*, D. V. Sreekanth **, Busi Ashok Kumar***

* Professor, Department of Mechanical Engineering, St.Martin’s Engineering College, Secunderabad, Telangana, India.

** Professor & HOD, Department of Mechanical Engineering, St.Martin’s Engineering College, Secunderabad, Telangana, India.

*** Assistant Professor, Department of Mechanical Engineering St.Martin’s Engineering College, Secunderabad, Telangana, India.

Sammaiah, K., Sreekanth, D. V., and Kumar, B. A. (2019). Impact of Weld Parameters for Indirect Spot Welding and its Behavior for Sheet Metal Fabrication Industries.i-manager’s Journal on Mechanical Engineering, 9(2), 35-42. https://doi.org/10.26634/jme.9.2.15581

Abstract

Resistance welding principle depending on heat developed at the interface due to current supplied through the electrode to the metal parts being joined. It depends upon the electric current flow, supply time and load transmitted to the parts to be joined. Indirect spot welding or one side welding method force the joint to be welded like normal conventional process of spot welding; the current flow direction is deviated by adding series of electrodes through the interface and ground the flow direction to the bottom electrode there by heating effect will be reduced in the bottom sheet and at the same time ensurs formation of nugget. For achieving is principle a special unit is designed and fabricated and attached to the bottom electrode of Spot welding machine. This requirement of both transmitting of current and weld force to realize minimum deformation on one of the sheets. Trials were conducted 23 factorial designs is met using “statistical” design approach from the of experiments. Weld parameters were considered for each factor with two level variation and the tension shear load was taken as response criteria. Indirect resistance welding trials were conducted and regression equations were obtained. The effect of parameters on tension shear breaking load was analyzed.

Optimization of Tool wear and Surface Roughness in Turning Titanium (Ti-6Al-4V) Alloy; NFMQCF Technique

Volume 9 Issue 2 February - April 2019

Research Paper

Optimization of Tool wear and Surface Roughness in Turning Titanium (Ti-6Al-4V) Alloy; NFMQCF Technique

Sivakoteswararao Katta*, G. Chaitanya**, B. Ravi Shankar ***

* Research Scholar, Department of Mechanical Engineering,Acharya Nagarjuna University, Guntur,Andhra Pradesh, India.

** Associate Professor, Department of Mechanical Engineering, RVR&JC College of Engineering, Guntur, Andhra Pradesh, India.

*** Associate Professor, Department of Mechanical Engineering, Bapatla Engineering College, Bapatla, Andhra Pradesh, India.

Katta, S., Chaitanya, G., and Shankar, B. R.(2018). Optimization of Tool wear and Surface Roughness in Turning Titanium (Ti-6Al-4V) Alloy; NFMQCF Technique.i-manager’s Journal on Mechanical Engineering, 9(2), 21-34. https://doi.org/10.26634/jme.9.2.14812

Abstract

In today's machining applications, nanofluids created a revolution by replacing the various metal cutting fluids used in manufacturing industries, due to its distinct properties such as high thermal conductivity and lubrication. The optimization was done based on the experimentation on surface roughness and tool wear. To get optimized results the technique used was Grey Rational Analysis (GRA), Principle Composite Analysis (PCA), and Response Surface Methodology (RSM) optimization techniques on the turning of Titanium (Ti-Al-4V) alloy with the Nanofluid based Minimum Quantity Cutting Fluid (NFMQCFT) Technique. Here, Graphene nanoparticles are used to mix with the vegetable oil based (Soya Bean) cutting fluid. The experiment has been done by using several machining parameters such as feed rate, cutting speed, depth of cut, etc. An analysis has been made to evaluate the machining parameters for surface roughness values (Ra) and Tool wear based on the actual series of experiments with uncoated carbide tool. The outcomes state that the feed rate has a greater influence on the values of surface roughness as compared to cutting speed. The predicted results are identical to the experimental values. Since this research has multi-objective, these developed models using response surface methodology, grey rational analysis, and principle composite analysis can be used for evaluation of surface roughness and tool wear.

Variation of Inside Temperature of Vacuum Tube and Header for Different Inclination Angle of Vacuum Tube Solar Air Collector

Volume 9 Issue 2 February - April 2019

Research Paper

Variation of Inside Temperature of Vacuum Tube and Header for Different Inclination Angle of Vacuum Tube Solar Air Collector

Vishal Dabra*, Pardeep Sharma**

*_**Assistant Professor, Department of Mechanical Engineering, Panipat Institute of Engineering & Technology, Haryana, India.

Darba, V., and Sharma, P. (2019). Variation of Inside Temperature of Vacuum Tube and Header for Different Inclination Angle of Vacuum Tube Solar Air Collector. i-manager’s Journal on Mechanical Engineering, 9(2), 16-21. https://doi.org/10.26634/jme.9.2.14916

Abstract

The prime goal of current research work is to design, fabricate and test the performance of vacuum tube solar air collector. This paper investigates the influence of inclination angle on the variation of inside temperature of vacuum tube and header of vacuum tube solar air collector. Vacuum tube solar air collector is used to produce hot air over a period of daytime without tracking the sun. Results found that the variation of inside temperature of vacuum tube increases from 45.8°C to 56.5°C, 42.7°C to 92.3°C and 43.7°C to 94.1°C and the variation of inside temperature of header increases from 38.4°C to 48.1°C, 34.6°C to 92.3°C and 35.2°C to 72.2°C for 30°, 45° and 60° inclination angle.

Fabrication and Characterization of Hybrid Metal Matrix Composites

Volume 9 Issue 2 February - April 2019

Research Paper

Fabrication and Characterization of Hybrid Metal Matrix Composites

D. Vishnu Vardhan Reddy*, Venkata Ajay Kumar G.**, N. Jaya Krishna***

*_***Assistant Professor, Department of Mechanical Engineering, Annamacharya Institute of Technology and Sciences,Rajampet, Andhra Pradesh, India.

Reddy, D. V. V., Kumar, G. V. A., andKrishna, N. J.(2019). Fabrication and Characterization of Hybrid Metal Matrix Composites. i-manager’s Journal on Mechanical Engineering, 9(2), 9-15. https://doi.org/10.26634/jme.9.2.15164

Abstract

Materials are often selected for structural, aerospace and automotive applications because of better mechanical properties. In recent days development of Hybrid Metal Matrix Composites (HMMCs) has gained lot of interest in Materials Science field. In view of this, the present study focuses on the formation of Aluminum-SiC-Titanium dioxide HMMC. It was aimed to evaluate the mechanical and metallurgical properties of Al2014T6 alloy in the presence of silicon carbide, and Titanium dioxide its combinations. Various compositions are added and by using stir casting method HMMCs are fabricated. The properties like tensile strength, elongation, yield strength, hardness and micro structure were determined. In the presence of Silicon Carbide (SiC) and Titanium dioxide (TiO2) [5%SiC + 5%TiO2 , 2.5%SiC+7.5% TiO2and 7.5% SiC+ 2.5% TiO2] with Aluminum, composites were prepared. It was noticed that newly developed HMMCs exhibits better strength, hardness and elongation when compared with metal alloy.

Transient Dynamic Finite Element Analysis of Cup Drawing Process

Volume 9 Issue 2 February - April 2019

Research Paper

Transient Dynamic Finite Element Analysis of Cup Drawing Process

P. Nanda Kumar*, P. S. Ravi Kumar**, B. Vikram***

* Professor, Department of Mechanical Engineering, N.B.K.R. Institute of Science & Technology, Vidyanagar, Andhra Pradesh, India.

** Associate Professor, Department of Mechanical Engineering, N.B.K.R. Institute of Science & Technology, Vidyanagar, Andhra Pradesh, India.

*** M.Tech Student (AMS), Department of Mechanical Engineering, N.B.K.R. Institute of Science & Technology, Vidyanagar, Andhra Pradesh, India.

Kumar, P. N., Kumar, R. P. S., and Vikram, B. (2019). Transient Dynamic Finite Element Analysis of Cup Drawing Process.i-manager’s Journal on Mechanical Engineering, 9(2), 1-8. https://doi.org/10.26634/jme.9.2.15271

Abstract

The cup drawing process of sheet takes an important place in forming metals. The traditional techniques of tool design for sheet forming operations used in industry are experimental and expensive methods. Prediction of the forming results, determination of the punching force, blank holder forces and the thickness distribution of the sheet metal will decrease the production cost and time of the material to be formed. In this project, cup drawing simulation has been presented with finite element method. The entire production step has been simulated by ANSYS 15.0 software under axisymmetric conditions with nonlinear Transient dynamic analysis. Radial, axial, hoop and Von Mises stress patterns have been simulated for critical load conditions. A rigorous analysis of Von Mises stress has been performed to track the yield behavior of blank. Contact behavior was also observed. Simulated Punch force was compared with experimental values for different travel intervals.

Effect of Process Parameters on Surface Finish in Single Point Incremental Forming Process-A Review

Volume 9 Issue 1 November - January 2019

Review Paper

Effect of Process Parameters on Surface Finish in Single Point Incremental Forming Process-A Review

Narinder Kumar*, R. M. Belokar **

* Research Scholar, Department of Production and Industrial Engineering, Punjab Engineering College, Chandigarh, India.

** Professor, Department of Production and Industrial Engineering, Punjab Engineering College, Chandigarh, India.

Kumar, N., and Belokar, R. M. (2019). Effect of Process Parameters on Surface Finish in Single Point Incremental Forming Process-A Review. i-manager’s Journal on Mechanical Engineering, 9(1), 44-51. https://doi.org/10.26634/jme.9.1.14818

Abstract

Single Point Incremental Forming (SPIF) is an emerging flexible forming process, which makes use of CNC milling machine to create complex parts having low volume production rate without using dedicated dies and tooling. A lot of research on this process has been carried out due to its several advantages like customized parts, economical and higher formability as compared to conventional forming process. To make this process more suitable for industry, it is necessary to overcome some of the challenges that is need some serious attention. In this paper, a systematic literature review is presented that studied the quantitative effect of the process parameters on the surface finish. A roadmap for the selection of experimental parameters on this process is proposed which may act as a reference for the researchers.

Optimization of Four Wheeler-Disc Brake Rotor Using Couple Field, CFD, Squeal Analysis

Volume 9 Issue 1 November - January 2019

Research Paper

Optimization of Four Wheeler-Disc Brake Rotor Using Couple Field, CFD, Squeal Analysis

V. Y. Varma Nayakar*, A. Swarna Kumari **

* M.Tech Graduate, Department Of Mechanical Engineering, University Of College Of Engineering, Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India.

** Professor, Department Of Mechanical Engineering, University Of College Of Engineering, Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India.

Nayakar, V.Y.V., and Kumari, A. S. (2019). Optimization of Four Wheeler-Disc Brake Rotor Using Couple Field, CFD, Squeal Analysis. i-manager’s Journal on Mechanical Engineering, 9(1), 31-43. https://doi.org/10.26634/jme.9.1.14972

Abstract

Safety is always associated with the effective usage of the braking phenomenon of the automobiles. Disc brakes in fourwheelers compared to solid disc type, ventilated disc brake rotor design helps to cool down the disc from heat generated due to friction with the air vents provided. Frictional heat generation in disc brake which leads to severe negative effects, i.e. thermal cracks, brake fade, premature wear, rotor disc thickness variation, etc. So, the precision of temperature distribution and geometry of the disc brake rotor plays a key role in cooling factor of the disc brake and squeal noise generation during braking also plays a major role in deciding the effectiveness of a disc brake with respect to brake fade. In this study, by changing the geometry of the disc brake rotors is to analyze the thermo-mechanical behaviour of the solid and ventilated disc brakes and using the coupled transient thermal and static structural analysis is performed using Finite Element Methods with the help of ANSYS. It is used to determine the temperature, deformation, stresses, and strain fields established in various models of disc brake rotors. Computational Fluid Dynamics (CFD) analysis is performed to investigate the wall heat transfer coefficient of ventilated disc brake rotors using ANSYS Fluent software. From the above CFD analysis, due to changing of vane shapes, there is a considerable increase (10.25%) in modified straight rectangular vane compared to the rectangular vane in heat transfer coefficient of the rotor. Finally, modal analysis is performed using ANSYS to check the disc brake squeal. By comparing the parameters, i.e. temperature, stress distribution is validated with the analytical results, and thereby the optimized or best disc brake rotor is proposed for the effective usage of braking operation of a four-wheeler.

CFD Analysis on Internally Finned Two Phase Closed Thermosyphon Using Nanofluids

Volume 9 Issue 1 November - January 2019

Research Paper

CFD Analysis on Internally Finned Two Phase Closed Thermosyphon Using Nanofluids

K. Manikanta*, A. Swarna Kumari **

* M.Tech Graduate, Department Of Mechanical Engineering, University Of College Of Engineering, Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India.

** Professor, Department Of Mechanical Engineering, University Of College Of Engineering, Jawaharlal Nehru Technological University, Kakinada, Andhra Pradesh, India.

Manikanta, K., and Kumari, A. S. (2019). CFD Analysis on Internally Finned Two Phases Closed Thermosyphon Using Nanofluids. i-manager’s Journal on Mechanical Engineering, 9(1), 22-30. https://doi.org/10.26634/jme.9.1.14973

Abstract

In recent decades, the compactness of the electronic component continues to increase, the heat generation rates also keep on increasing exponentially. Thermal management plays a critical and essential role in maintaining high efficiency and reliability of electronic components. Several cooling technologies are available, among them heat pipe technology is a very promising thermal management solution in high heat flux applications. Heat pipe technology utilises phase change by latent heat of vaporisation and latent heat of condensation. The two-phase closed thermosyphon (TPCT) is a gravity-assisted wickless heat pipe. Due to high efficiency, reliability, simple structure, and cost effectiveness thermosyphons are being used in many applications. In this present work, the geometrical model of twophase closed thermosyphon with internal fins attached to the condenser section is created using CATIA V5R20 software. The model is simulated using ANSYS FLUENT 15.0 commercial software and the interaction between two phases is modelled using Volume of Fluid (VOF) technique. Further optimization is done to improve heat transfer rate using different types of nanofluids, different aspect ratios, and geometries of internal fins. Heat transfer characteristics like temperature distribution and heat transfer rate are studied and compared for all cases. Simple Thermosyphon with fins and without fins was compared using Silicon Dioxide nanofluid as a working fluid. Among three nanofluids used in this work, silicon dioxide (SiO ) shows higher heat transfer rate in Thermosyphon with spiral fins.

A Novel Approach of Turning on Titanium(Ti-6AL-4V) Alloy using NFGMT Coupled with GRA, PCA, and RSM

Volume 9 Issue 1 November - January 2019

Research Paper

A Novel Approach of Turning on Titanium(Ti-6AL-4V) Alloy using NFGMT Coupled with GRA, PCA, and RSM

Sivakoteswararao Katta*, G. Chaitanya**, B. Ravi Shankar ***

*Research Scholar, Department of Mechanical Engineering, Acharya Nagarjuna University, Guntur, Andhra Pradesh, India.

**Associate Professor, Department of Mechanical Engineering, RVR&JC College of Engineering, Guntur, Andhra Pradesh, India.

***Associate Professor, Department of Mechanical Engineering, Bapatla Engineering College, Bapatla, Andhra Pradesh, India.

Katta, S., Chaitanya, G., and Shankar, B. R. (2019). A Novel approach of turning on titanium (Ti-6AL-4V) alloy using NFGMT coupled with GRA PCA and RSM. i-manager’s Journal on Mechanical Engineering, 9(1), 13-21. https://doi.org/10.26634/jme.9.1.14813

Abstract

The present work attempted to find the impact of proces parameters on turning titanium grade 5 alloys and accurate optimization model for responses, such as cutting force, cutting time, and temperature using Principal Component Analysis (PCA), Gray Relational Analysis (GRA), and (RSM) Response Surface Methodology optimization techniques. Graphene Nanoparticles are used to mix with the vegetable oil based (Soya Bean) cutting fluid. The experiment has been done by using machining parameters, such as feed rate, cutting speed, depth of cut, and an analysis has been made to evaluate the machining parameters for cutting force, cutting time, and temperature based on the actual series of experiments with uncoated carbide tool. The outcomes state that the depth of cut and speed has a greater influence on the values of cutting force and temperature as compared to feed. The predicted results are identical to the experimental values. Since this research is multi-objective, these developed models using RSM and PCA can be used for the evaluation of cutting force, temperature, and cutting time as well.

Thermal Performance Analyses of Concentric Pipe Counter Flow Heat Exchanger at Different Operating Conditions by CFD

Volume 9 Issue 1 November - January 2019

Research Paper

Thermal Performance Analyses of Concentric Pipe Counter Flow Heat Exchanger at Different Operating Conditions by CFD

Rajendra Pathak*, Ankur Geete**

*Research Scholar, Department of Mechanical Engineering, Sushila Devi Bansal College of Technology, Indore, Madhya Pradesh, India.

**Associate Professor, Department of Mechanical Engineering, Sushila Devi Bansal College of Technology, Indore, Madhya Pradesh, India.

Pathak, R., and Geete, A. (2019). Thermal Performance Analyses of Concentric Pipe Counter Flow Heat Exchanger at Different Operating Conditions by CFD. i-manager’s Journal on Mechanical Engineering, 9(1), 1-12. https://doi.org/10.26634/jme.9.1.14805

Abstract

IIn this research work, a concentric pipe counter flow heat exchanger (CPCFHEx) is analyzed to optimize the performance at different conditions. CFD analyses are executed and temperature, pressure, velocity, and turbulence profiles are studied through pipes by CFD simulation method. Effectiveness, overall heat transfer coefficients, pressure drops, and change in velocities for CPCFHEx are found. Entropy, exergy, and entransy analyses are also done with different flow rates and inner pipe materials to find optimum operating conditions. After analyses, maximum temperature difference (i.e. 4.688 K) for cold fluid and effectiveness (i.e. 0.1562) are found for copper at low flow rates (i.e. 0.081 and 0.19 kg/s cold/hot) but maximum temperature difference (i.e. 1.595 K) for hot fluid is found for steel at high flow rates (i.e. 0.1 and 0.22 kg/s cold/hot). Maximum rate of heat transfer (i.e. 1.603 W) and overall heat transfer coefficient (i.e. 3.160 W/m2 K) but maximum rates of entropy generation (i.e. 1.144 J/s-K) and exergy destruction (i.e.343.2 J/s) are found for copper at high flow rates. Minimum rate of entransy dissipation (i.e. 19874.925 J-K/s) and entransy dissipation number (i.e. 0.4516) are obtained for steel at high flow rates. High conductive material for pipe and low flow rates of fluids are recommended to get better performance of HExs in terms of rate of heat transfer, effectiveness, entropy generation, and exergy destruction.

Multi-Objective Optimization of End Milling Process Parameters in Machining of EN 31 Steel: Application of AHP Embedded With VIKOR and WASPAS Methods

Volume 8 Issue 4 August - October 2018

Research Paper

Multi-Objective Optimization of End Milling Process Parameters in Machining of EN 31 Steel: Application of AHP Embedded With VIKOR and WASPAS Methods

Venkata Ajay Kumar. G*, D. Vishnu Vardhan Reddy**, Nakka Nagaraju***

*-*** Assistant Professor, Department of Mechanical Engineering, Annamacharya Institute of Technology & Sciences, (Autonomous), Rajampet, Andhra Pradesh, India.

Kumar, G. V. A., Reddy, D. V., and Nagaraju, N. (2018). Multi-Objective Optimization of End Milling Process Parameters in Machining of EN 31 Steel: Application of AHP Embedded with VIKOR and WASPAS Methods. i-manager’s Journal on Mechanical Engineering, 8(4), 39-46. https://doi.org/10.26634/jme.8.4.14676

Abstract

The objective of the current work is to optimize the end milling process machining parameters in end milling of EN 31 steel. Surface Roughness (SR), Dimensional Deviation (DD) and Material Removal Rate (MRR) are some of the crucial findings in this work. In this work, the weights are calculated by using numerical tool AHP (Analytic Hierarchy Process) method, and VIKOR(Vise Kriterijumska Optimizacija Kompromisno Resenje) and WASPAS (Weighted Aggregated Sum Product Assessment) methods are used in analyzing optimum machining parameters. These techniques are utilized for multi-objective optimization which minimizes SR, DD and maximizes the MRR. Results showed the effectiveness of VIKOR approach as well as WASPAS method, both methods are appropriate to any metal cutting operations on superior with multi-number of objectives concurrently.

Reducing Chips and Scratches on Closures of a Car Assembly Line

Volume 8 Issue 4 August - October 2018

Research Paper

Reducing Chips and Scratches on Closures of a Car Assembly Line

S. Balakumar*, Milon Selvam Dennison**, Nelson A. J. R***

*,*** Postgraduate, Department of Mechanical Engineering, PSG College of Technology, Coimbatore, Tamil Nadu, India.

** Adjunct Professor, Department of Mechanical Engineering, Faculty of Engineering at Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India.

Balakumar, S., Dennison, M. S., and Nelson, A. J. R. (2018). Reducing Chips and Scratches on Closures of a Car Assembly Line. i-manager’s Journal on Mechanical Engineering, 8(4), 31-38. https://doi.org/10.26634/jme.8.4.14336

Abstract

An automotive assembly facility has recently been experiencing quality issues in assembly and repair shop as a result of new model introduction. Since the current model start-up, the assembly process has been the major area for the concerns related to paint issues. This study attempted to address and nullify the quality issue of chips and scratches on closures of a car. The target of this paper is to diminish the revamp, for example chips and scratches which are made in the car mechanical production system. To outline an imperfection free arrangement of an automotive and legitimize the upgrades with few metrics, this study was done. The quantity of assembly stations inside the plant was precisely watched. The gathering procedures examined for the layout were current vehicle development and the basic to quality variables. The essential aspects of lean taken here were disposing of non-value added exercises like transit wastes, lessening work in advance stock, to maintain a strategic distance from the rework and repaint. Distinctive methodologies and tools were utilized to decrease the chips and scratches made amid the assembly process, as to the changes made there was diminishment of chips and scratches.

Comparative Analysis of an SI Engine Block Using Al Alloy and Metal Matrix Composite

Volume 8 Issue 4 August - October 2018

Research Paper

Comparative Analysis of an SI Engine Block Using Al Alloy and Metal Matrix Composite

S. Aravind*, D. Sathish Kumar **, G. Vignesh***

*-*** Assistant Professor, Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India.

Aravind, S., Kumar, D. S., and Vignesh, S. (2018). Comparative Analysis of an SI Engine Block Using Al Alloy and Metal Matrix Composite. i-manager’s Journal on Mechanical Engineering, 8(4), 25-30. https://doi.org/10.26634/jme.8.4.14296

Abstract

To increase the life, fuel economy and efficiency of an automobile engine, the researches are being done on the use of different materials. Material selection for an engine depends on various factors. The life of the engine with the material which is capable of giving higher efficiency and fuel economy can be determined with the help of thermal analysis. This paper deals with the thermal analysis of a SI engine block using two different materials; Al alloy 6061 and a metal matrix composite (Al alloy+ 20 % SiC). The engine block was modeled using Pro-E and the thermal analysis was done using ANSYS. The thermal stress, thermal flux and thermal gradient of two different materials have been analyzed. It has been found that the Metal Matrix composite (MMC) has less thermal stress and thermal gradient compared to Al alloy.

Frictional Performance of Dimpled Textured Surfaces on a Frictional Pair: An Experimental Study

Volume 8 Issue 4 August - October 2018

Research Paper

Frictional Performance of Dimpled Textured Surfaces on a Frictional Pair: An Experimental Study

G. Vignesh*, M. Prakash**, Milon Selvam Dennison***, P. Ragupathi****

*-**,**** Assistant Professor, Department of Mechanical Engineering, Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India.

*** Adjunct Professor, Department of Mechanical Engineering, Faculty of Engineering at Karpagam Academy of Higher Education, Coimbatore, Tamil Nadu, India.

Vignesh, G., Prakash, M., Dennison, M. S., and Ragupathi, P. (2018). Frictional Performance of Dimpled Textured Surfaces on a Frictional Pair : An Experimental Study. i-manager’s Journal on Mechanical Engineering, 8(4), 18-24. https://doi.org/10.26634/jme.8.4.14337

Abstract

Surface Texturing is the most significant technique to reduce friction in the frictional pairs. Tribological performance of the frictional pairs can be improved by controlling the geometrical shape, dimple diameter to depth ratio, and area density ratio. In this study, tribological performance of the brass discs with various surface textures mated with brass pins were experimentally analyzed using pin on disc tribometer. Laser marking machine was used to produce surface textures like Circular arrays of spherical and ellipsoidal dimple features with various aspects and area density ratio. The dimple shape and size are experimentally analyzed under dry lubrication. The influence of three kinds of dimple textures on friction characteristics was studied. It shows that there is a positive effect on dimpled surfaces compared to smooth surfaces. Controlling the dimple size and shape plays an important role in surface texturing.

Optimization of Environmental Friendly Turning Process using Taguchi Integrated Grey Relational Analysis during Machining of 17-4 PH Stainless Steel

Volume 8 Issue 4 August - October 2018

Research Paper

Optimization of Environmental Friendly Turning Process using Taguchi Integrated Grey Relational Analysis during Machining of 17-4 PH Stainless Steel

P. Sivaiah*, P. Mallikarjuna**, B. Uma***, K. Venkata Chalapathi****

* Senior Assistant Professor, Department of Mechanical Engineering, Madanapalle Institute of Technology & Science, Andhra Pradesh, India.

** Assistant Professor, Department of Mechanical Engineering, Annamacharya Institute of Technology and Sciences, Andhra Pradesh, India.

*** Postgraudate, Department of Mechanical Engineering, Jawaharlal Nehru Technological University Ananthapur, Andhra Pradesh, India.

**** Assistant Professor, Department of Mechanical Engineering, Chaitanya Bharathi Institute of Technology, Andhra Pradesh, India.

Sivaiah, P., Mallikarjuna, P., Uma, B., and Chalapath, K. V. (2018). Optimization Of Environmental Friendly Turning Process Using Taguchi Integrated Grey Relational Analysis During Machining of 17-4 PH Stainless Steel. i-manager’s Journal on Mechanical Engineering, 8(4), 8-17. https://doi.org/10.26634/jme.8.4.14190

Abstract

Chemically contaminated conventional coolants and conventional cooling techniques negatively affect the manual operator's health and environmental pollution. To overcome these problems, in the present study, biodegradable coolant and environmentally friendly cooling techniques were used for experimental investigation. Determination of optimum conditions significantly affect the productivity hence selection of optimum cutting conditions is crucial in turning process. The current work is concentrated on optimization of multiple responses using Taguchi integrated Grey Relational Analysis (TGRA) in turning of 17-4 precipitated hardenable stainless steel (PH SS) under minimum quantity lubrication (MQL) environment. The respective multiple responses considered are surface roughness (Ra), tool flank wear (Vb) and material removal rate (MRR), whereas, the respective process parameters considered are cutting velocity (v), feed rate (f) and depth of cut (d). The optimum process parameters determined from the TGRA are at v = 84.62 m/min, f = 0.048 mm/rev and d = 0.7 mm respectively. From the results, it was observed that the respective reductions in Ra and Vb are 30 % and 17.64 %, whereas, MRR increased by 24.68 % at the optimum parameter settings. Also, analysis of variance (ANOVA) was carried out to find out the influence of each input factor on turning performance characteristics. MQL cooling technique is an efficient alternative solution for metal cutting industries from the stringent environmental regulation point of view. On the other hand, TGRA helps to improve the productivity during machining of 17-4 PH SS.

Experimental Studies on Mechanical Properties of Polymer Based Composites

Volume 8 Issue 4 August - October 2018

Research Paper

Experimental Studies on Mechanical Properties of Polymer Based Composites

G. Satish*, S. Sambhu Prasad**, V. V. S. Prasad***

* Associate Professor, Department of Mechanical Engineering, Pragati Engineering College, Surampalem, Andhra Pradesh, India.

** Professor, Department of Mechanical Engineering, Pragati Engineering College, Surampalem, Andhra Pradesh, India.

*** Professor, Department of Marine Engineering, Andhra University, Visakhapatnam, Andhra Pradesh, India.

Satish, G., Prasad, S. S., and Prasad, V. V. S. (2018). Experimental Studies on Mechanical Properties of Polymer Based Composites. i-manager’s Journal on Mechanical Engineering, 8(4), 1-7. https://doi.org/10.26634/jme.8.4.14102

Abstract

Polymer composites have good characteristics like modulus/weight ratio, strength/weight ratio, excellent fatigue and non-corroding properties which encourage to the extensive applications. This study was about the orientation of fiber effects on the mechanical properties of E-glass reinforced polymer composites which is essential. For three different orientations (0o/90o, 0o/45o & 0o/135o) of fiber, epoxy laminated composites are fabricated by hand-layup technique and these specimens were subjected to tensile, flexural and hardness testing as per the ASTM standards. This paper evaluates the comparison of different orientation of E-glass fiber in order to improve the strength and hardness. The experimental results reveal that the best tensile strength and hardness values are obtained for 0o/90o oriented fibers, flexural strength is  for 0o/45o orientations specimen. Regression analysis is utilised to check the validity of the experimental data. The results demonstrated that the created quadratic models are suitable for the prediction of experimental values for mechanical properties.

Designing of Various Parts of CNC Setup

Volume 8 Issue 3 May - July 2018

Research Paper

Designing of Various Parts of CNC Setup

Pretesh John*, Rahul Davis**

* M. Tech. (Production & Industrial Engineering) Research Scholar, Department of Mechanical Engineering, SIET-SHUATS, Allahabad, Uttar Pradesh, India.

** Assistant Professor, Department of Mechanical Engineering, SIET-SHUATS, Allahabad, Uttar Pradesh, India.

John, P., and Davis,R. (2018). Designing of Various Parts of CNC Setup. i-manager’s Journal on Mechanical Engineering, 8(3), 59-67. https://doi.org/10.26634/jme.8.3.13996

Abstract

Control of Dimensional accuracy with good surface finish is the most important requirement of the manufactured parts because it is a kind of measuring parameter to determine the reliability. The accuracy can be attained by the automation of the tool by removing the human error possibilities, and here comes the role of CNC (Computer Numeric Control) system. Use of CNC Machining in the manufacturing sector involves control of machine tools with the help of computers. The tools that can be controlled in this manner include lathes, mills, routers and grinders, etc. In this article, the designing of the various parts of CNC setup is shown by SolidWorks 2017 Student Addition with simple static simulation. The simulation results show the limits of stress, strain, and displacement in the designed setup.