karthik pandiyan - Academia.edu (original) (raw)

Papers by karthik pandiyan

Research paper thumbnail of Functionally graded materials: review on manufacturing by Liquid and gas based techniques

Materials Research Express

New materials called functionally graded materials (FGMs) have qualities that gradually alter in ... more New materials called functionally graded materials (FGMs) have qualities that gradually alter in relation to their dimensions. This collection of materials represents a significant advancement over earlier composite material. FGM is made up of two or more components that work together to produce the qualities necessary for the intended use. This article provides an overview of the various FGM classifications, fabrication techniques (gas based and liquid based), and applications. The problems associated with the manufacturing of FGM are addressed in the study. This paper also reviews the present state of knowledge in the areas of selection of material, manufacturing process, characterization studies, and modelling of FGM. The potential applications of the FGM, with their advantages and disadvantages, are discussed in this paper. The proposed new primary paths for FGMs research are based on the categories that have been presented and the most recent improvements in analysis and produc...

Research paper thumbnail of Evaluation of Wire Electrical Discharge Machining Performance Features on EN AW-6082 T6 Aluminum Alloy and Optimization of Machining Characteristics

Journal of Materials Engineering and Performance

Research paper thumbnail of RFID Aided Automatic Billing Trolley System

Shopping is one of the primary and important aspect of day-to-day life. Each and every item which... more Shopping is one of the primary and important aspect of day-to-day life. Each and every item which we use are been purchased. When coming to metro cities the time is an important aspect to be considered. As purchasing and shopping goods at super markets and malls is becoming daily activity. We can see big rush during holidays, weekends at billing counters. Even though we shop the required items quickly, more time is consumed at billing counters during billing. Especially the crowd increases during the festive seasons because of the discounts offered by the producers. The present criteria during shopping is customer selects the required items and put them in trolley, after picking all the items one has to go to the billing counter for payment process. At billing counter the cashier will read the bar code which is on the product using the bar code reader and prepares the bill, which involves too much time and results in long queue at billing counters. To reduce the inconvenience, this ...

Research paper thumbnail of Experimental Investigation and Optimization by Evaluation Based on Distance from Average Solution Approach for Wire Electrical Discharge Machining of Super Duplex Stainless Steels

Journal of Materials Engineering and Performance

Research paper thumbnail of Location Reporting System Using GSM-SMS Services

Journal of emerging technologies and innovative research, 2016

This Paper presents the simpler and efficient location reporting system which is independent of G... more This Paper presents the simpler and efficient location reporting system which is independent of Global positioning system and Smart-Phones. Location Reporting System is used to keep track of the objects which are either stationary or in motion and can tracked when there is a free line of sight communication. The tracking of the vehicle is secured with the help of the GSM-SIM number which is private and secure. Location Reporting System uses a preprogrammed data base of various locations throughout the country containing Location Area Code, Cell ID, Mobile Country Code and Mobile Nation Code, which have a prefixed values and unique for every location. The probability of all the 4 codes to be same is zero.

Research paper thumbnail of Low Power-Area Designs of 1Bit Full Adder in Cadence Virtuoso Platform

International Journal of VLSI Design & Communication Systems, 2013

Power consumption has emerged as a primary design constraint for integrated circuits (ICs). In th... more Power consumption has emerged as a primary design constraint for integrated circuits (ICs). In the Nano meter technology regime, leakage power has become a major component of total power. Full adder is the basic functional unit of an ALU. The power consumption of a processor is lowered by lowering the power consumption of an ALU, and the power consumption of an ALU can be lowered by lowering the power consumption of Full adder. So the full adder designs with low power characteristics are becoming more popular these days. This proposed work illustrates the design of the low-power less transistor full adder designs using cadence tool and virtuoso platform, the entire simulations have been done on 180nm single n-well CMOS bulk technology, in virtuoso platform of cadence tool with the supply voltage 1.8V and frequency of 100MHz. These circuits consume less power with maximum (6T design)of 93.1% power saving compare to conventional 28T design and 80.2% power saving compare to SERF design without much delay degradation. The proposed circuit exploits the advantage of GDI technique and pass transistor logic.

Research paper thumbnail of A mathematical approach of evaluating sustainability indicators in milling of aluminium hybrid composite by different eco-friendly cooling strategies

Sustainable Materials and Technologies

Research paper thumbnail of Cryogenic Treatment on Alloy Steels- A Review

International journal of engineering research and technology, 2018

This paper studies the effect of cryogenic treatment on High Speed Steel(HSS) tool steels. Cryoge... more This paper studies the effect of cryogenic treatment on High Speed Steel(HSS) tool steels. Cryogenic treatment (CT) is the heat treatment process, it converts the austenite into martensite by which the materials to improve mechanical and physical properties to achieve increase in hardness, increase in wear resistance, reduced residual stresses, increase in fatigue Resistance, increased dimensional stability, increased thermal conductivity, toughness and homogeneous crystal structure on materials. The CT on cutting materials is the process of treating the cutting metal to the subzero temperature to improve the physical and the mechanical properties of the cutting tool. Many researchers have proposed various techniques to improve the lifetime of the cutting material. The motivation behind this paper is to compare the various techniques that are used in the treatment of the cutting tools and the selection of the best technique from the existing or by the modification to them. This pape...

Research paper thumbnail of Cryogenic Hardening of EN 19 Alloy Steel

International Journal of Innovative Technology and Exploring Engineering, 2019

his paper includes the study of heat treatment process that we carried out on En 19 steel in cryo... more his paper includes the study of heat treatment process that we carried out on En 19 steel in cryogenic atmosphere. Cryogenic treatments of alloy steels have been significantly increase wear resistance and toughness. These investigations of warmth treatment cryogenic medicines of amalgam steels have been asserted to altogether expand wear protection and sturdiness. Cryogenic handling is a supplementary procedure to customary warmth treatment process in steels. The cryogenic treatment on apparatus materials builds the life of instruments, gear, parts and materials by boosting elasticity, sturdiness and strength. This cryogenic hardening process is an onetime treatment influencing the whole part — not only the surface. Cryogenic treatment has been broadly embraced as a cost decrease and execution upgrading innovation. Cryogenic treatment is likewise utilized as an empowering innovation, when its pressure alleviating benefits are used to allow the manufacture (or machining) of basic res...

Research paper thumbnail of Machinability analysis and optimisation of EDM in AA6082/ 3 wt. % BN/1wt. % MoS2 hybrid composites using entropy method weights integrated with Complex Proportional Assessment (COPRAS) method

An investigation was made on composites containing AA6082 as matrix and boron nitride/molybdenum ... more An investigation was made on composites containing AA6082 as matrix and boron nitride/molybdenum disulphide (BN/MoS2) used as reinforcement, which was 3 wt. % of BN and 1% MoS2 hybrid composite materials were fabricated by stir casting methodology. Using electrical discharge machining (EDM) equipment, machinability studies were examined to achieve an optimal condition of process parameters. Taguchi (L27 orthogonal array) based design of experiments was employed for experiments to examine the influence of process parameters like pulse on time (Ton), peak current (IP) and gap voltage (V) on material removal rate (MRR), circularity (CIRC), electrode wear rate (EWR), and cylindricity (CYLD) were investigated. Multi Criteria Decision Making (MCDM) methodology was employed for the process parameters while machining AA6082/ 3 wt. % BN/1% MoS2 hybrid composites. An entropy-based objective weights method was integrated with the complex proportional assessment (COPRAS) approach to assess the ...

Research paper thumbnail of Machinablity analysis and optimisation of process paramater in the turining of Inconel 718 alloy using multi criteria decision making method: A comparative study

Manufacturing sectors strive towards low-toxic, environmentally friendly machining to combat clim... more Manufacturing sectors strive towards low-toxic, environmentally friendly machining to combat climate change. Due to its low heat conductivity, machining Inconel 718 alloy is a difficult process nowadays. The purpose of this research is to investigate the turning of Inconel 718 alloy under PVD TiAlN inserts in two distinct environments: dry and atomized spray cutting fluid (ASCF). The effect of various machining performance such as surface roughness(Ra), vibration acceleration (VA), and tool life (TL) analysis of Inconel 718 alloy in ecologically friendly machining were investigated in this study. Further, Multicriteria decision-making (MCDM) was used to find best optimal process settings: TOPAIS (Technique for Ordering Performance by Similarity to Ideal Solution), CODAS (Combinative Distance-Based Assessment Technique), and EDAS (Evaluation Based on Distance from Average Solution) are three techniques for evaluating performance by similarity to ideal solution. In an ASCF setting, th...

Research paper thumbnail of Tribological Studies and Optimization of Two-Body Abrasive Wear of NaOH-Treated Vachellia Farnesiana Fiber by Additive Ratio Assessment Method

Journal of Materials Engineering and Performance

Research paper thumbnail of Investigation of surface roughness and material removal rate of WEDM of SS304 using ANOVA and regression models

Surface Topography: Metrology and Properties

Use of machine learning and artificial intelligence (AI) to analyze the complex interdependencies... more Use of machine learning and artificial intelligence (AI) to analyze the complex interdependencies of production dataset has gained momentum in recent years. Machine learning and predictive algorithms are now used by manufacturers to fine-tune the quality of their products. WEDM of SS304 with process parameters such as pulse-on-time (Ton), pulse-off-time (T off), current (I), and voltage (V) was varied to study the effect of machining parameters such as Material Removal Rate (MRR) and surface roughness. Experiments were planned and executed according to the L’9 orthogonal array. Scanning Electron Microscope (SEM) was utilized to study the machined surface. An analysis of variance (ANOVA) was performed to determine the input and output significance. ANOVA results revealed that V (81.85%) and Toff (77.75%) for surface roughness. Further to determine the relationship between variables, various regression models based on machine learning was tested. The effectiveness of the regression mo...

Research paper thumbnail of Optimization of Machining Process Parameters for Surface Roughness of Al-Composites

Journal of The Institution of Engineers (India): Series C, 2013

Metal matrix composites (MMCs) have become a leading material among the various types of composit... more Metal matrix composites (MMCs) have become a leading material among the various types of composite materials for different applications due to their excellent engineering properties. Among the various types of composites materials, aluminum MMCs have received considerable attention in automobile and aerospace applications. These materials are known as the difficult-to-machine materials because of the hardness and abrasive nature of reinforcement element-like silicon carbide particles. In the present investigation Al–SiC composite was produced by stir casting process. The Brinell hardness of the alloy after SiC addition had increased from 74 ± 2 to 95 ± 5 respectively. The composite was machined using CNC turning center under different machining parameters such as cutting speed (S), feed rate (F), depth of cut (D) and nose radius (R). The effect of machining parameters on surface roughness (Ra) was studied using response surface methodology. Face centered composite design with three levels of each factor was used for surface roughness study of the developed composite. A response surface model for surface roughness was developed in terms of main factors (S, F, D and R) and their significant interactions (SD, SR, FD and FR). The developed model was validated by conducting experiments under different conditions. Further the model was optimized for minimum surface roughness. An error of 3–7 % was observed in the modeled and experimental results. Further, it was fond that the surface roughness of Al-alloy at optimum conditions is lower than that of Al–SiC composite.

Research paper thumbnail of Machinability Analysis and Optimization of Electrical Discharge Machining in AA6061-T6/15wt.% SiC Composite by the Multi-criteria Decision-Making Approach

Journal of Materials Engineering and Performance, 2022

An investigation was made on AA6061-T6/15wt.% SiC composites fabricated by stir casting method to... more An investigation was made on AA6061-T6/15wt.% SiC composites fabricated by stir casting method to study its machinability carried out by electrical discharge machining (EDM) method and optimize process parameters by the multi-criteria decision-making (MCDM) method. For experimentation, Taguchi-based L27 orthogonal array was used. EDM machining process parameters selected for this study were current (IP), pulse on time (Ton), and gap voltage (V) which were investigated by material removal rate (MRR), tool wear rate (TWR), circularity (CIR), and cylindricity (CYL). For the multi-objective optimization criteria on machining, entropy method weights incorporated with combinative distance-based assessment (CODAS) methodology to estimate the optimum level of input parameters. Objective-based entropy weight-age method was used to assign weights for output responses. Entropy weights were 0.164, 0.128, 0.402, and 0.306 for MRR, TWR, CIR, and CYL. From the CODAS assessment scores, optimal cond...

Research paper thumbnail of Optimization of machining parameters on AA6351 alloy steel using Response Surface Methodology (RSM)

Materials Today: Proceedings

Abstract This paper deals with the surface integrity of machined AA6351 Aluminium metal Matrix us... more Abstract This paper deals with the surface integrity of machined AA6351 Aluminium metal Matrix using end Turning process. Investigations on surface quality of machined Aluminium metal Matrix were carried out at different levels of cutting conditions. Dry high-speed Turning process tests the input parameters chosen at different cutting speeds, feed rates and depths of cut, tool nose radius in order to investigate the effect of the various cutting parameters on the surface roughness of Turning process using HSS Tool steels. The response surface methodology was composed of an experimental design to find an approximate model between the input and output variables, a statistical modeling, and the optimization of responses by Central Composite Design (CCD). In this work, AA6351 alloy steel work piece machined by CNC machine centre is evaluated according to Response Surface Methodology with an objective function of obtaining good surface finish using single tool operations and optimization methods for finding the values of the process variables that produce desirable values of the response.

Research paper thumbnail of Implementation of nanotechnology in fuel cells

Materials Today: Proceedings

Abstract In this paper deals with the various applications of nanotechnology in fuel cells. One o... more Abstract In this paper deals with the various applications of nanotechnology in fuel cells. One of the major problems in today’s world is power crisis. This problem can be over come by using fuel cells. This fuel cells has another advantage that they are zero-emissive in nature, comparing to fossil fuels. Because they use hydrogen and oxygen as fuels, and the combustion product is also just water, which never causes pollution to the environment. Thus, the pollution can be controlled and indirectly preventing global warming, which is also one of the gigantic problem, now a days. But, any how, the fuel cells also pollute the environment indirectly, during the process of production of hydrogen required as fuel. The implementation of nanotechnology in this method practically makes fuel cells, non-polluting. Here comes another problem of storing hydrogen as required by the fuel cells. This problem can also be over come by implementing nanotechnology. The carbon-nanotubes can be used in storing hydrogen efficiently, as per the requirements.

Research paper thumbnail of Improvement on the machinability characteristics of AA6061-T6/15 wt. % SiC composites by Response Surface methodology

Surface Topography: Metrology and Properties

Research paper thumbnail of Functionally graded materials: review on manufacturing by Liquid and gas based techniques

Materials Research Express

New materials called functionally graded materials (FGMs) have qualities that gradually alter in ... more New materials called functionally graded materials (FGMs) have qualities that gradually alter in relation to their dimensions. This collection of materials represents a significant advancement over earlier composite material. FGM is made up of two or more components that work together to produce the qualities necessary for the intended use. This article provides an overview of the various FGM classifications, fabrication techniques (gas based and liquid based), and applications. The problems associated with the manufacturing of FGM are addressed in the study. This paper also reviews the present state of knowledge in the areas of selection of material, manufacturing process, characterization studies, and modelling of FGM. The potential applications of the FGM, with their advantages and disadvantages, are discussed in this paper. The proposed new primary paths for FGMs research are based on the categories that have been presented and the most recent improvements in analysis and produc...

Research paper thumbnail of Evaluation of Wire Electrical Discharge Machining Performance Features on EN AW-6082 T6 Aluminum Alloy and Optimization of Machining Characteristics

Journal of Materials Engineering and Performance

Research paper thumbnail of RFID Aided Automatic Billing Trolley System

Shopping is one of the primary and important aspect of day-to-day life. Each and every item which... more Shopping is one of the primary and important aspect of day-to-day life. Each and every item which we use are been purchased. When coming to metro cities the time is an important aspect to be considered. As purchasing and shopping goods at super markets and malls is becoming daily activity. We can see big rush during holidays, weekends at billing counters. Even though we shop the required items quickly, more time is consumed at billing counters during billing. Especially the crowd increases during the festive seasons because of the discounts offered by the producers. The present criteria during shopping is customer selects the required items and put them in trolley, after picking all the items one has to go to the billing counter for payment process. At billing counter the cashier will read the bar code which is on the product using the bar code reader and prepares the bill, which involves too much time and results in long queue at billing counters. To reduce the inconvenience, this ...

Research paper thumbnail of Experimental Investigation and Optimization by Evaluation Based on Distance from Average Solution Approach for Wire Electrical Discharge Machining of Super Duplex Stainless Steels

Journal of Materials Engineering and Performance

Research paper thumbnail of Location Reporting System Using GSM-SMS Services

Journal of emerging technologies and innovative research, 2016

This Paper presents the simpler and efficient location reporting system which is independent of G... more This Paper presents the simpler and efficient location reporting system which is independent of Global positioning system and Smart-Phones. Location Reporting System is used to keep track of the objects which are either stationary or in motion and can tracked when there is a free line of sight communication. The tracking of the vehicle is secured with the help of the GSM-SIM number which is private and secure. Location Reporting System uses a preprogrammed data base of various locations throughout the country containing Location Area Code, Cell ID, Mobile Country Code and Mobile Nation Code, which have a prefixed values and unique for every location. The probability of all the 4 codes to be same is zero.

Research paper thumbnail of Low Power-Area Designs of 1Bit Full Adder in Cadence Virtuoso Platform

International Journal of VLSI Design & Communication Systems, 2013

Power consumption has emerged as a primary design constraint for integrated circuits (ICs). In th... more Power consumption has emerged as a primary design constraint for integrated circuits (ICs). In the Nano meter technology regime, leakage power has become a major component of total power. Full adder is the basic functional unit of an ALU. The power consumption of a processor is lowered by lowering the power consumption of an ALU, and the power consumption of an ALU can be lowered by lowering the power consumption of Full adder. So the full adder designs with low power characteristics are becoming more popular these days. This proposed work illustrates the design of the low-power less transistor full adder designs using cadence tool and virtuoso platform, the entire simulations have been done on 180nm single n-well CMOS bulk technology, in virtuoso platform of cadence tool with the supply voltage 1.8V and frequency of 100MHz. These circuits consume less power with maximum (6T design)of 93.1% power saving compare to conventional 28T design and 80.2% power saving compare to SERF design without much delay degradation. The proposed circuit exploits the advantage of GDI technique and pass transistor logic.

Research paper thumbnail of A mathematical approach of evaluating sustainability indicators in milling of aluminium hybrid composite by different eco-friendly cooling strategies

Sustainable Materials and Technologies

Research paper thumbnail of Cryogenic Treatment on Alloy Steels- A Review

International journal of engineering research and technology, 2018

This paper studies the effect of cryogenic treatment on High Speed Steel(HSS) tool steels. Cryoge... more This paper studies the effect of cryogenic treatment on High Speed Steel(HSS) tool steels. Cryogenic treatment (CT) is the heat treatment process, it converts the austenite into martensite by which the materials to improve mechanical and physical properties to achieve increase in hardness, increase in wear resistance, reduced residual stresses, increase in fatigue Resistance, increased dimensional stability, increased thermal conductivity, toughness and homogeneous crystal structure on materials. The CT on cutting materials is the process of treating the cutting metal to the subzero temperature to improve the physical and the mechanical properties of the cutting tool. Many researchers have proposed various techniques to improve the lifetime of the cutting material. The motivation behind this paper is to compare the various techniques that are used in the treatment of the cutting tools and the selection of the best technique from the existing or by the modification to them. This pape...

Research paper thumbnail of Cryogenic Hardening of EN 19 Alloy Steel

International Journal of Innovative Technology and Exploring Engineering, 2019

his paper includes the study of heat treatment process that we carried out on En 19 steel in cryo... more his paper includes the study of heat treatment process that we carried out on En 19 steel in cryogenic atmosphere. Cryogenic treatments of alloy steels have been significantly increase wear resistance and toughness. These investigations of warmth treatment cryogenic medicines of amalgam steels have been asserted to altogether expand wear protection and sturdiness. Cryogenic handling is a supplementary procedure to customary warmth treatment process in steels. The cryogenic treatment on apparatus materials builds the life of instruments, gear, parts and materials by boosting elasticity, sturdiness and strength. This cryogenic hardening process is an onetime treatment influencing the whole part — not only the surface. Cryogenic treatment has been broadly embraced as a cost decrease and execution upgrading innovation. Cryogenic treatment is likewise utilized as an empowering innovation, when its pressure alleviating benefits are used to allow the manufacture (or machining) of basic res...

Research paper thumbnail of Machinability analysis and optimisation of EDM in AA6082/ 3 wt. % BN/1wt. % MoS2 hybrid composites using entropy method weights integrated with Complex Proportional Assessment (COPRAS) method

An investigation was made on composites containing AA6082 as matrix and boron nitride/molybdenum ... more An investigation was made on composites containing AA6082 as matrix and boron nitride/molybdenum disulphide (BN/MoS2) used as reinforcement, which was 3 wt. % of BN and 1% MoS2 hybrid composite materials were fabricated by stir casting methodology. Using electrical discharge machining (EDM) equipment, machinability studies were examined to achieve an optimal condition of process parameters. Taguchi (L27 orthogonal array) based design of experiments was employed for experiments to examine the influence of process parameters like pulse on time (Ton), peak current (IP) and gap voltage (V) on material removal rate (MRR), circularity (CIRC), electrode wear rate (EWR), and cylindricity (CYLD) were investigated. Multi Criteria Decision Making (MCDM) methodology was employed for the process parameters while machining AA6082/ 3 wt. % BN/1% MoS2 hybrid composites. An entropy-based objective weights method was integrated with the complex proportional assessment (COPRAS) approach to assess the ...

Research paper thumbnail of Machinablity analysis and optimisation of process paramater in the turining of Inconel 718 alloy using multi criteria decision making method: A comparative study

Manufacturing sectors strive towards low-toxic, environmentally friendly machining to combat clim... more Manufacturing sectors strive towards low-toxic, environmentally friendly machining to combat climate change. Due to its low heat conductivity, machining Inconel 718 alloy is a difficult process nowadays. The purpose of this research is to investigate the turning of Inconel 718 alloy under PVD TiAlN inserts in two distinct environments: dry and atomized spray cutting fluid (ASCF). The effect of various machining performance such as surface roughness(Ra), vibration acceleration (VA), and tool life (TL) analysis of Inconel 718 alloy in ecologically friendly machining were investigated in this study. Further, Multicriteria decision-making (MCDM) was used to find best optimal process settings: TOPAIS (Technique for Ordering Performance by Similarity to Ideal Solution), CODAS (Combinative Distance-Based Assessment Technique), and EDAS (Evaluation Based on Distance from Average Solution) are three techniques for evaluating performance by similarity to ideal solution. In an ASCF setting, th...

Research paper thumbnail of Tribological Studies and Optimization of Two-Body Abrasive Wear of NaOH-Treated Vachellia Farnesiana Fiber by Additive Ratio Assessment Method

Journal of Materials Engineering and Performance

Research paper thumbnail of Investigation of surface roughness and material removal rate of WEDM of SS304 using ANOVA and regression models

Surface Topography: Metrology and Properties

Use of machine learning and artificial intelligence (AI) to analyze the complex interdependencies... more Use of machine learning and artificial intelligence (AI) to analyze the complex interdependencies of production dataset has gained momentum in recent years. Machine learning and predictive algorithms are now used by manufacturers to fine-tune the quality of their products. WEDM of SS304 with process parameters such as pulse-on-time (Ton), pulse-off-time (T off), current (I), and voltage (V) was varied to study the effect of machining parameters such as Material Removal Rate (MRR) and surface roughness. Experiments were planned and executed according to the L’9 orthogonal array. Scanning Electron Microscope (SEM) was utilized to study the machined surface. An analysis of variance (ANOVA) was performed to determine the input and output significance. ANOVA results revealed that V (81.85%) and Toff (77.75%) for surface roughness. Further to determine the relationship between variables, various regression models based on machine learning was tested. The effectiveness of the regression mo...

Research paper thumbnail of Optimization of Machining Process Parameters for Surface Roughness of Al-Composites

Journal of The Institution of Engineers (India): Series C, 2013

Metal matrix composites (MMCs) have become a leading material among the various types of composit... more Metal matrix composites (MMCs) have become a leading material among the various types of composite materials for different applications due to their excellent engineering properties. Among the various types of composites materials, aluminum MMCs have received considerable attention in automobile and aerospace applications. These materials are known as the difficult-to-machine materials because of the hardness and abrasive nature of reinforcement element-like silicon carbide particles. In the present investigation Al–SiC composite was produced by stir casting process. The Brinell hardness of the alloy after SiC addition had increased from 74 ± 2 to 95 ± 5 respectively. The composite was machined using CNC turning center under different machining parameters such as cutting speed (S), feed rate (F), depth of cut (D) and nose radius (R). The effect of machining parameters on surface roughness (Ra) was studied using response surface methodology. Face centered composite design with three levels of each factor was used for surface roughness study of the developed composite. A response surface model for surface roughness was developed in terms of main factors (S, F, D and R) and their significant interactions (SD, SR, FD and FR). The developed model was validated by conducting experiments under different conditions. Further the model was optimized for minimum surface roughness. An error of 3–7 % was observed in the modeled and experimental results. Further, it was fond that the surface roughness of Al-alloy at optimum conditions is lower than that of Al–SiC composite.

Research paper thumbnail of Machinability Analysis and Optimization of Electrical Discharge Machining in AA6061-T6/15wt.% SiC Composite by the Multi-criteria Decision-Making Approach

Journal of Materials Engineering and Performance, 2022

An investigation was made on AA6061-T6/15wt.% SiC composites fabricated by stir casting method to... more An investigation was made on AA6061-T6/15wt.% SiC composites fabricated by stir casting method to study its machinability carried out by electrical discharge machining (EDM) method and optimize process parameters by the multi-criteria decision-making (MCDM) method. For experimentation, Taguchi-based L27 orthogonal array was used. EDM machining process parameters selected for this study were current (IP), pulse on time (Ton), and gap voltage (V) which were investigated by material removal rate (MRR), tool wear rate (TWR), circularity (CIR), and cylindricity (CYL). For the multi-objective optimization criteria on machining, entropy method weights incorporated with combinative distance-based assessment (CODAS) methodology to estimate the optimum level of input parameters. Objective-based entropy weight-age method was used to assign weights for output responses. Entropy weights were 0.164, 0.128, 0.402, and 0.306 for MRR, TWR, CIR, and CYL. From the CODAS assessment scores, optimal cond...

Research paper thumbnail of Optimization of machining parameters on AA6351 alloy steel using Response Surface Methodology (RSM)

Materials Today: Proceedings

Abstract This paper deals with the surface integrity of machined AA6351 Aluminium metal Matrix us... more Abstract This paper deals with the surface integrity of machined AA6351 Aluminium metal Matrix using end Turning process. Investigations on surface quality of machined Aluminium metal Matrix were carried out at different levels of cutting conditions. Dry high-speed Turning process tests the input parameters chosen at different cutting speeds, feed rates and depths of cut, tool nose radius in order to investigate the effect of the various cutting parameters on the surface roughness of Turning process using HSS Tool steels. The response surface methodology was composed of an experimental design to find an approximate model between the input and output variables, a statistical modeling, and the optimization of responses by Central Composite Design (CCD). In this work, AA6351 alloy steel work piece machined by CNC machine centre is evaluated according to Response Surface Methodology with an objective function of obtaining good surface finish using single tool operations and optimization methods for finding the values of the process variables that produce desirable values of the response.

Research paper thumbnail of Implementation of nanotechnology in fuel cells

Materials Today: Proceedings

Abstract In this paper deals with the various applications of nanotechnology in fuel cells. One o... more Abstract In this paper deals with the various applications of nanotechnology in fuel cells. One of the major problems in today’s world is power crisis. This problem can be over come by using fuel cells. This fuel cells has another advantage that they are zero-emissive in nature, comparing to fossil fuels. Because they use hydrogen and oxygen as fuels, and the combustion product is also just water, which never causes pollution to the environment. Thus, the pollution can be controlled and indirectly preventing global warming, which is also one of the gigantic problem, now a days. But, any how, the fuel cells also pollute the environment indirectly, during the process of production of hydrogen required as fuel. The implementation of nanotechnology in this method practically makes fuel cells, non-polluting. Here comes another problem of storing hydrogen as required by the fuel cells. This problem can also be over come by implementing nanotechnology. The carbon-nanotubes can be used in storing hydrogen efficiently, as per the requirements.

Research paper thumbnail of Improvement on the machinability characteristics of AA6061-T6/15 wt. % SiC composites by Response Surface methodology

Surface Topography: Metrology and Properties