s. DineshK.Ramakrishnan College of Technology
s. Dinesh
Masters in Manufacturing Engineering
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50
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Introduction
I am currently pursuing my PhD in the area of Powder Mixed electrical discharge machining at the Anna University, Chennai.I have published 46 research papers in various machining operations, heat exchangers, composites and IC engines involving optimization techniques.
Skills and Expertise
Publications
Publications (50)
The joining of two material with different chemical composition was a major setback for conventional methods of metal joining. The results of this welding were showing considerably great improvement in the aspects of quality of weld, amount of heat generated, uniform distribution of material, refined microstructure, enhanced tribology, materials fl...
Pool boiling is one of the very suitable techniques for an efficient thermal management system dealing with two phases. The present work deals with the experimental exploration of critical heat flux for safety concern and heat transfer coefficient related to the performance point of view in nucleate boiling regime of pool boiling system. The copper...
Due to their unique characteristics, natural fiber reinforced polymer composites have recently been increasingly utilised to replace traditional materials. Fire retardant resins can increase flammability, and they have a deleterious influence on the mechanical properties of the material (Fan et al., 2020). As a result, this experiment examined the...
Nimonic Alloy 90 is a superalloy used to make critical parts such as nozzles in aerospace applications. Superalloys are tougher materials, and their machinability for converting them into useful products with required shape is very poor. Hence, this work concentrated on understanding their machinability using the process of EDM with the presence of...
The goal of this project is to find optimization parameters in the TIG weld bead. To ensure the success of this research project, a semiautomatic TIG was developed. Samples are made in a single bead on top of a substrate (base metal) in a horizontal position. Aluminum 6082 is used as the substrate, and AA5356 filler wire with a diameter of 2.4 mm i...
In this study, a polymer composite is made using chemically treated jute fiber and waste floor tile powder as an alternative source for roof tile application. The wear qualities were examined at various ages, and the outcomes were optimized. In order to improve the wetting properties of the jute fiber, it was chemically treated. MINITAB software wa...
Due to their low shrinkage and simple mouldability, epoxy resin composites are commonly applied in moulds manufactured with quick tooling technologies. Various percentages of aluminum particles (20 percent, 40 percent, and 60 percent) added by weight with epoxy resin are formed and machined to the ASTM according to cold stir casting. In terms of th...
The work deals with design and fabrication of copper and SiC infused Aluminium composite. Industrial requirements such as improved hardness and tensile strength have led to development nominal cost composite with lower weight. Stir casting method is used for casting of composite with varying reinforcement levels. The tensile strength and hardness o...
Power losses in transmission affect the maximum speed of the vehicle and increase the fuel consumption. This is due to improper surface quality resulting from the intend to achieve maximum productivity. The work deals with analyzing the effect of each input parameter such as regulating wheel speed, regulating wheel angle and depth of cut on the res...
The prime objective of this investigation is to ascertain the stress analysis of dissimilar pistons with different compression ratios. The diverse piston geometries of deep cylindrical piston (DCP) and shallow re-entrant piston (SRP) were exclusively designed by the baseline of hemispherical existing piston (HEP) at different compression ratios of...
In this research aimed to estimate the Overall heat transfer coefficient of counter flow Shell and Tube heat exchanger. Heat transfer is the phenomenon to analysis of heat transfer from one medium of fluid to another medium of fluid, it is considered as a major role in industrial applications. Numerous heat exchangers are available, in this researc...
Surface finish is the most important property of the product that makes it marketable and useable. Achieving mirror quality finish at a low cost without compromising the production rate is a critical job of a process planner. This work concentrates on identifying the critical parameters that controls the output of centerless grinding process and st...
Automotive shafts require maximum strength with regard to axial, bending and torsional loading to transmit power to various parts of a vehicle. Hence, it is very critical to analyse the manufacturing process and its governing parameters to exercise control over the surface properties of the shaft as it needs to be precisely manufactured in terms of...
The Nd:YAG laser welding is an advanced process for sheet metal welding. Inconel 625 alloy sheet is widely used in aircraft structure. The present paper is experimentally investigated about the Nd:YAG laser welding of Inconel 625 alloy sheet with improvement of geometrical accuracy and hardness of the welding area. The experiments carried out by us...
The work deals with optimization of the feasible parameters and identification of the most feasible parameter for turning operation using the response surface methodology, Grey–Taguchi method, and ANOVA. Mild steel was turned using a single-point cutting tool made of P20 tool steel by varying the parameters such as depth of cut, feed rate, and rake...
Thermal load due to non-uniform temperature variations is one of the reasons for premature exhaust valve damage. Thermal analysis helps in estimating the heat flow accurately so that temperature distribution can be lowered / optimized to prevent failures due to excessive stresses. Therefore, the focus of this study is to perform thermal analysis on...
Influence of Tool Geometry in Microstructure and
Mechanical Properties of AA2024 Alloy in Friction
Stir Welding
Industry 4.0 (I4.0) brings with it a series of changes in the companies; among them we find those that affect the business models to get the concept of smart factory. This change in business models implies a complete communication network between different companies, factories, suppliers, resources and others optimized in real time, so that maximum...
Recent industrial developments have grown from mass production to customized production due to industrial revolution and digital transformation [1]. Similarly, the customer expectations and initiation of new connected devices motivate the determined digital manufacturing. Industry 4.0 utilizes the Internet of things (IoT) concept, which has made th...
Incomplete combustion in IC engines reduces the efficacy and increases the release of undesired contents to the atmosphere. As an effort to improve the properties of emission and the performance characteristics of the engine, additive MTBE is added to gasoline at different proportions. This work aims at comparison of efficacy and emission character...
WEDM process being used for machining harder to machine materials, it is important to streamline the input parameters that controls the production rate and the quality of the product. Hence, an attempt has been made to identify the most significant parameter that controls the mojor part of the outputs and develop a model for predicting the response...
Powder Mixed Electrical Discharge Machining process is commonly used to machine hard to cut materials such as OHNS steel which are used to make gauges where precise machining is required. Precise machining requires proper control of parameters and obtaining the most suitable set of parameters. Hence, this work deals with varying the input parameter...
Presented modified aluminum alloy was investigated for its usage in automobile structural/frames application. In order to divulge high strength to the AA 2XXX aluminium alloy, the alloy composition is rehabilitated marginally by amassed the Mg and some trimmings of Si and Ti. Pure aluminium billets was used for casting. Mg and other metal powders w...
In this experimental study essentially focused to the tensile and yield strength of composites of different percentage of Pure Jute fiber with Chicken feather fiber. The major participation of these compositions is pure Jute and minor variations created by the Chicken feather fiber on the basis of weight. There are two variations created for the in...
In this investigation depend on composites of Al6063 alloy mechanical properties enhancement by mixing the Silicon (Si), Graphite (Gr) and Fly ash. In this case four combinations of specimens were created for investigation. 90% of Al6063 alloy and 5% of Silicon maintained for all the specimens. Graphite used from 1% to 4% with one percentage of inc...
In this experimental study mainly focused the thermal property such as thermal resistance and heat transfer analysis for the air gap variations provided in between two glasses on window for the domestic purposes. Easily available surrounding air considered as the experimental mater because of its arrangements. Thermal resistance of inside, outside...
Milling operation is one of the important manufacturing processes in production industry. Study and analysis of milling process parameters such as spindle speed, feed rate and depth of cut are important for process planning engineers. The responses are temperature, surface roughness, machining time, feed force, thrust force and cutting force. The m...
Metal Matrix Composite is widely replacing the older materials in the area of aerospace applications. The evolving requirement of superior properties and increased lifetime expectancy has led to formation of newer composite materials. An attempt has been made to formulate and evaluation of the fundamental properties of the developed composite. AA 7...
Natural fibers plays an important role in modern FRPs. To obtain higher mechanical properties glass fibers are incorporated to prepare hybrid FRP composites. This study, focuses the effect of copper metal powder in the polymer matrix i.e. the metal powder is mixed in the resin itself with varying proportions along with the banana and glass fibers....
In this research work, the production and machining of aluminium metal matrix composites were investigated. AA6603 base metal and TiC as reinforcement at propositions ranging from 0 to 9 wt% are used. The material being proposed for the application in aerospace industries and to obtain critical surface finish levels, electro chemical machining proc...
Effect of turning parameters on chip generation during machining aluminum composite is studied in this work. Turning of Al-4%Cu-7.5%SiC composite material prepared through powder metallurgy procedure was chosen as the workpiece, machined using uncoated carbide insert TNMG 120404. Chips produced during machining were studied by measuring the thickne...
Manufacturing simulation is an encouraging field in every manufacturing industry. The manufacturing simulation facilitate to virtually analysis the performance of the product before manufacturing. So for most of the manufacturing activities are simulated effective and researchers have developed adequate tool for the simulation of various activities...
Manufacturing Industries face major issues in machining die steels due to its inherent property of being harder at situation where tools are used at higher speed even though having a great machinability. Advanced machining processes have been adopted to overcome the issues but at higher cost. Manufacturers strive hard to produce components at lower...
A Pressure vessel is a device designed as a closed container that holds gases or liquids at a pressure considerably different from the ambient pressure. Due to differential operating conditions of pressure vessels, they are potentially dangerous and accident involving can be deadly and poses lethal dangers. The main aim of this work is to design an...
Surface texture is one of the important responses for the machine tool design because poor surface texture causes nucleation, subsurface cracks etc. For this reason, machining process is introduced such as cylindrical grinding, surface grinding, Centerless grinding etc. for achieving better surface texture. In that, centerless grinding plays a vita...
Every manufacturing industry primarily concentrates on yielding maximum profit with minimal expenditure where profit directly depends on the production cost and quality of the product. The firm aims at maximum production rate with minimum production cost and maximum surface quality. The minimal production cost and surface finish can be achieved by...
Industries aim at high profits with optimal investment on the production sectors. This can be accomplished by reducing the tool wear rate for the maximum material removal rate. Efforts had been made to increase the tool life by using various techniques such as Response Surface Methodology and Taguchi-Grey relational analysis. The copper electrode w...
From the past few decade, many manufacturing industries are using heat exchangers for reducing the energy consumption and hence reducing the fuel costs. Most widely used types of heat exchangers in industries are Double Pipe Heat Exchangers and Shell & Tube Heat Exchangers. It is recently that industry people and researchers are becoming more aware...
From the past many decades, mesh generation posed many challenges in the field of computational sciences for many researches. High rise in computational power has enabled many researches to tackle the problems of complex geometries. Due to the high need of computational power, computational cost also increased abruptly. In today's world, many acade...
Due to environmental concerns, the use of alternative fuel is rapidly expanding around the world, making it imperative to fully understand the impacts of diesel on pollutant formation. The aim of this work is to increase the engine performance with reduced emissions using diesel blends from different feed stocks and to compare that with the diesel....
Modern enterprises concentrate on higher production rates with reduced time and admired quality. The surface integrity defines the quality of the product. Several processes like grinding, polishing and buffing have been used to improve the surface texture of the machined products. The most prominent challenge that is faced by an engineer is to manu...
Every manufacturing or production unit should concern about the quality of the product. Apart from quality, there exists other criterion, called productivity which is directly proportional to the profit level. Every manufacturing industry aims at producing a large number of products in relatively lesser time. In any machining process, it is most im...
Wheel rim is the part of automotive where it heavily undergoes both static loads as well as fatigue loads as wheel rim travels different road profile. As it develops heavy stresses in the rim, the critical stress and number cycles to failure are to be found. The purpose of the car wheel rim is to provide a firm base to hold the tire. Its dimensions...
Turning is the one of the material removal process that finds vast application in manufacturing vital components such as axles, shafts, etc, in large numbers. In that, every manufacturing unit focuses on high quality with increased production rate, which decides the profit level of the firm. So, its important to determine the optimal machining para...
The diesel fuel used in engines for power generation in various industrial applications produce high exhaust pollutants because of poor engine performance. It has become a need to reduce these pollutants by using suitable additives along with diesel and improve the engine performance. The present research work focuses at improving the engine perfor...