Parametric investigation using PSO algorithm while machining TixNiyCoz alloys

2021 ◽  
Author(s):  
Hargovind Soni ◽  
Peter Madindwa Peter Mashinini ◽  
Adam Khan M
Keyword(s):  
Surface Characterization ◽  
Optimization Technique ◽  
Pso Algorithm ◽  
Copper Electrode ◽  
Machining Process ◽  
Functional Material ◽  
Spectra Analysis ◽  
Spark Gap ◽  
Particle Swarm Optimization Technique ◽  
Pulse On Time

Abstract In this paper, the research has been focused on machining functional material using electro spark machining process. The Ti x Ni y Co z alloy in three different combinations of Ni and Co (Tix Niy Coz ) as (i) Ti50 Ni49 Co1 (ii) Ti50 Ni45 Co5 and (iii) Ti50 Ni40 Co10 ) were machined with copper electrode wire under electro spark method. The machined samples were subjected to surface characterization techniques using electron microscope, energy dispersive spectra analysis and confocal surface microscope. Also, the amount of material removed was mathematically calculated to infer the performance of the machining process. From the investigation, an increase in Co (wt. %) was found difficult to machine and the surface roughness is a maximum of 4.35 µm at spark gap and servo voltage (125 µs and 20 V) respectively. The particle swarm optimization technique is used to find the globally best solution. The process parameters for machining TixNiyCoz alloy found in the range of 116 – 122 µs and 22 to 32 V, spark bandgap and servo voltage respectively. Therefore, at a maximum pulse on time (spark gap 122 µs) and average servo voltage (30V) TixNiyCoz alloy can be machined with wire electro spark method for best results.

scholarly journals Study of wire-electrical discharge machining parameters of titanium alloy by using taguchi method

2018 ◽  
Vol 7 (2.8) ◽  
pp. 10
Author(s):  
A VS Ram Prasad ◽  
Koona Ramji ◽  
B Raghu Kumar
Keyword(s):  
Surface Roughness ◽  
Taguchi Method ◽  
Process Parameters ◽  
Optimization Technique ◽  
Machining Process ◽  
Machining Parameters ◽  
Wire Edm ◽  
Pulse On Time ◽  
Pulse Off Time ◽  
Edm Process

Machining of Titanium alloys is difficult due to their chemical and physical properties namely excellent strength, chemical reactivity and low thermal conductivity. Traditional machining of such materials leads to formation of continuous chips and tool bits are subjected to chatter which leads to formation of poor surface on machined surface. In this study, Wire-EDM one of the most popular unconventional machining process which was used to machine such difficult-to-cut materials. Effect of Wire-EDM process parameters namely peak current, pulse-on- time, pulse-off-time, servo voltage on MRRand SR was investigated by Taguchi method. 0.25 mm brass wire was used in this process as electrode material. A surface roughness tester (Surftest 301) was used to measure surface roughness value of the machined work surface. A multi-response optimization technique was then utilized to optimize Wire-EDM process parameters for achieving maximum MRR and minimum SR simultaneously.

Multi Response Optimization of Electrical Discharge Machining Process Parameters Using Sintered Copper Electrode

2012 ◽  
Vol 622-623 ◽  
pp. 19-24
Author(s):  
P. Balasubramanian ◽  
Thiyagarajan Senthilvelan
Keyword(s):  
Process Parameters ◽  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Copper Electrode ◽  
Machining Process ◽  
Sintered Copper ◽  
Response Optimization ◽  
Electric Pressure ◽  
Pulse On Time

In this study, input parameters of Electrical Discharge machining (EDM) process have been optimised for two different materials EN-8 and Die steel-D3 were machined by using sintered copper electrode. Analysis of variance (ANOVA) was applied to study the influences of process parameters viz: - peak current, pulse on time, di-electric pressure and diameter of electrode on material removal rate (MRR), tool wear rate (TWR) and surface roughness (SR) for both materials. Response surface methodology (RSM) has been applied to optimise the multi responses in order to get maximum MRR, minimum TWR and minimum SR. Furthermore, mathematical model has been formulated to estimate the corresponding output responses for both work pieces. It has been observed that compared to EN 8 material, the MRR value is low and TWR is high for D3 material. However the SR value is marginally lower than obtained in EN8.R2 value is above 0.90 for both work pieces.

scholarly journals Comparative Study on EDM of Ti-6Al-4V Using Circular and Convex Shaped Electrodes

2018 ◽  
Vol 7 (3.34) ◽  
pp. 256
Author(s):  
S Rajamanickam ◽  
R Palani ◽  
V Sathyamoorthy ◽  
Muppala Jagadeesh Varma ◽  
Shaik Shaik Mahammad Althaf ◽  
...  
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Removal Rate ◽  
Industrial Applications ◽  
Copper Electrode ◽  
Machining Process ◽  
Project Work ◽  
Machining Parameters ◽  
Pulse On Time ◽  
Pulse Off Time

As on today, Electrical Discharge Machining (EDM) is world famous unconventional machining process for electrically conductive materials. In this project work, Ti-6Al-4V is performed in electrical discharge machining using differently shaped (circular and convex) copper electrode. The machining parameters considered are the pulse on- time, pulse off-time, voltage and current to investigate machining characteristics like material removal rate and tool wear rate. Taguchi method is applied to frame experimental design. Ti-6Al-4V finds wide usage in industrial applications such as marine, aerospace, bio-medical and so on. 

Landsman Converter Based Particle Swarm Optimization Technique

2017 ◽  
Vol 8 (3) ◽  
pp. 619
Author(s):  
Ramesh P. ◽  
V. Mathivanan
Keyword(s):  
Particle Swarm Optimization ◽  
Pid Controller ◽  
Dynamic Performance ◽  
Optimization Technique ◽  
Particle Swarm ◽  
Pso Algorithm ◽  
Control Technique ◽  
Swarm Optimization ◽  
Particle Swarm Optimization Technique ◽  
Comparative Results

This paper proposes a novel control technique for landsman converter using particle swarm optimization. The controller parameters are optimized by pso algorithm,the proposed algorithm is compared with pid controller and the comparative results are presented. Simulation results shows the dynamic performance of pso controller. landsman converter reduction in output voltage ripple in the order of mV along with reduced settling time as compared to the conventional pid controller . The simulated results are executed in MATLAB/SIMULINK.

scholarly journals A Novel Multi-Epoch Particle Swarm Optimization Technique

2018 ◽  
Vol 18 (3) ◽  
pp. 62-74 ◽  
Author(s):  
Romasevych Yuriy ◽  
Loveikin Viatcheslav
Keyword(s):  
Particle Swarm Optimization ◽  
Optimization Technique ◽  
Particle Swarm ◽  
Pso Algorithm ◽  
Global Optimum ◽  
High Rate ◽  
Local Optimum ◽  
Swarm Optimization ◽  
Particle Swarm Optimization Technique ◽  
Great Possibility

Abstract Since canonical PSO method has many disadvantages which do not allow to effectively reach the global minima of various functions it needs to be improved. The article refers to a novel Multi-Epoch Particle Swarm Optimization (ME-PSO) technique which has been developed by authors. ME-PSO algorithm is based on reinitializing of the stagnant swarm with low exploration efficiency. This approach provides a high rate of global best changing. As a result ME-PSO has great possibility of finding good local (or even global) optimum and does not trap in bad local optimum. In order to prove the advantages of the ME-PSO technique numerical experiments have been carried out with ten uni- and multimodal benchmark functions. Analysis of the obtained results convincingly showed significant superiority of ME-PSO over PSO and IA-PSO algorithms. It has been set that canonical PSO is a special case of ME-PSO.

An Investigation of the Influences of EDM Parameters and Tool Geometries on Radial Overcut for Monel 400 Material with Tungsten Copper Electrode

2015 ◽  
Vol 766-767 ◽  
pp. 908-913
Author(s):  
P. Padmini ◽  
S. Senthamilperarasu ◽  
B. Shanmuganathan ◽  
N.R.R. Anbusagar ◽  
P. Sengottuvel
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Dimensional Accuracy ◽  
Copper Electrode ◽  
Machining Process ◽  
Experimental Result ◽  
Machining Parameters ◽  
Radial Overcut ◽  
Monel 400 ◽  
Pulse On Time

Electrical-discharge Machining (EDM) is a nonconventional machining process utilizing an electric spark discharge from the electrode (-) towards the work piece (+) through the dielectric fluid. The Dimensional accuracy in this is very important consideration for the accuracy of the finished product. The objective of this experimental study is to determine parameters that offer the best dimensional accuracy in electrical discharge machining (EDM). Discharge current (A), Pulse On Time (Ton), Pulse Off Time (Toff ) and Circle,Rectangle,Triangle and Square Tool Geometrical Shapes (Geo) are taken as machining parameters. The experimental investigations are carried out on Monel 400 material using Tungsten copper electrode. The response of ROC is considered for improving the machining efficiency. Optimal combination of parameters was obtained Taguchi Optimization technique. The confirmation experiments results shows that the significant improvement in Radial Overcut was obtained. ANOVA have been used to analyze the contribution of individual parameters on ROC. The experimental result demonstrates that the Taguchi method satisfies the practical requirements

scholarly journals EXPERIMENTAL INVESTIGATION OF SURFACE TOPOGRAPHY OF AL7075-T6 ALLOY MACHINED BY EDM

2021 ◽  
pp. 3-10
Author(s):  
Maria Balanou ◽  
Lazaros-Emmanouil Papazoglou ◽  
Angelos P. Markopoulos ◽  
Panagiotis Karmiris-Obratański
Keyword(s):  
Surface Roughness ◽  
Laser Scanning ◽  
Surface Characterization ◽  
Electrical Discharge Machining ◽  
Laser Scanning Microscopy ◽  
Machining Process ◽  
Confocal Laser ◽  
Maximum Height ◽  
Electric Discharges ◽  
Pulse On Time

Electrical discharge machining is one of the most important non-conventional machining processes for removing material from electrically conductive materials by the use of controlled electric discharges. EDM is a non-contact machining process, therefore, is free from mechanical stresses. This paper investigates the machining Al7075-T6 alloy by EDM using a copper electrode. Al7075-T6 alloy was selected, because of its growing use in a lot of engineering applications. The effect of electrical parameters, peak current and pulse-on time, on the surface integrity, was studied. Area surface roughness parameters (arithmetical mean height, Sa, and maximum height, Sz) were measured on all samples and 3D surface characterization has been carried out with confocal laser scanning microscopy. The experimental results showed that the surface roughness is mainly affected by the pulse-on time.

scholarly journals Parametric optimization of process parameters for Electric discharge Machining of Tungsten carbide (93% WC and 7%Co)

2020 ◽  
Vol 26 (4) ◽  
pp. 154-161
Author(s):  
Sharma Kumar Rajiv
Keyword(s):  
Tungsten Carbide ◽  
Electrical Discharge Machining ◽  
High Strength ◽  
Copper Electrode ◽  
Optimum Combination ◽  
Machining Process ◽  
Optimization Of Process Parameters ◽  
Traditional Manufacturing ◽  
Pulse On Time ◽  
Pulse Off Time

AbstractNowadays there is a huge demand of High Strength Temperature Resistance (HSTR) alloys such as titanium, carbide, nimonics and ceramics in aerospace, defence and electronics. Among these alloys machining of tungsten carbide alloy is of interest, because of its numerous applications. Complex shapes of tungsten carbide are not generally made by traditional manufacturing process. To machine tungsten carbide with high accuracy, non-traditional machining process like Laser beam machining, Electron beam machining and Electrical discharge machining are a proper choice. In the present paper, the authors have machined Tungsten carbide (93% WC and 7%Co) with copper electrode. The machining is performed on EDM MODEL 500 X 300 ENC with VELVEX EDMVEL-2 as dielectric oil. The 17 experiments are carried out based on RSM (Box-Behnken) method. Further, in order to find the optimum combination grey relational approach is used. The results showed that pulse-on-time of 40μs, pulse-off-time of 2μs and current of 8A are optimum combination for machining of Tungsten carbide (93% WC and 7%Co). Lastly, the confirmation experiment has been conducted.

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