Optimization of Process Parameters to Improve Form and Orientation Tolerances in EDM of MoSi<sub>2</sub>-SiC Composites

Selvarajan, L.; Narayanan, C. Sathiya; Jeyapaul, R.

doi:10.1080/10426914.2014.962041

Cited by 39 publications

(10 citation statements)

References 20 publications

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“…This extant investigational work emphasizes by implementing a grey relational optimization technique to delineate the optimal value of the input parameter. By performing the grey relational optimization technique, the intended output responses were better responsive for dissimilar materials on various non-conventional machining methods instance EDM [24][25][26][27][28][29]. Anand et al [30] have done an investigation of drilling parameters on hybrid polymer composite by utilizing the optimization tools such as GRA, regression, fuzzy logic and ANN models.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Senthilkumar¹,

Muralikannan²

2019

J Braz. Soc. Mech. Sci. Eng.

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A generous development of electrical discharge machining method has been stimulated in the province of metal matrix composites materials. In this extant work, the optimal condition for various output responses specifically circularity, cylindricity, perpendicularity and radial over cut are exposed by employing grey relational analysis procedure by optimizing the input process parameters alike pulse on time (T on), peak current (I) and gap voltage (V). The Hybrid Metal Matrix Composite material is evolved by handling the stir casting approach and then machined by exploring the input parameters using L 27 orthogonal array. From the consequences of grey relational grade, a response table was discovered to elect the optimal conditions of the individual parameter. The most contributing input parameter is current with 69.08%, which is determined from the ANOVA table. Finally, the optimal conditions which were acquired from the response table are peak current of 12 A, pulse on time of 50 µs and gap voltage of 30 V and also verified through an authentication test which illustrated that optimal process parameters are competently improved by 0.1452 when compared to the predicted parameter. The machined surface is analysed using a scanning electron microscope. The results palpated that the peak current increases the number of microvoids and size of the crater was increased and the poor surface finish was achieved.

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Section: Introductionmentioning

confidence: 99%

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Senthilkumar¹,

Muralikannan²

2019

J Braz. Soc. Mech. Sci. Eng.

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“…The overcut in EDM die-sinking is another issue that ultimately influences the geometrical accuracy [21]. With respect to machining holes through EDM the difference between the designed geometry and machined geometry is very common [22]. It has been reported that the overcut especially in the case of hole making through EDM is highly difficult to forecast since there exists a complex and non-linear relationship of tool wear, tool diameter, and discharge parameters [23].…”

Section: Introductionmentioning

confidence: 99%

Improving the Performance of EDM through Relief-Angled Tool Designs

et al. 2020

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Among the family of carbides, tungsten carbide (WC) and its variants have extensive use in numerous applications including cutting tools, dies, and many wear resistant parts. Such applications need machining of WC, which is famously considered as challenging due to high tool wear mainly in traditional machining. Sinking electric discharge machining (EDM) can be considered as a suitable alternate but the low machining rate of EDM, with conventional tool design, poses limitations. In this research, the conventional tool design is modified by providing relief angles to the tool electrodes. The relief-angled tool electrodes are first time introduced in this research to machine through holes. The role of the relief angle during EDM has been investigated in terms of six response characteristics, i.e., machining time, hole taper angle, radial overcut at the hole entrance, radial undercut at the hole exit, longitudinal tool wear, and roughness of inside hole surfaces. The performance of the relief-angled electrodes is found to be significantly better than the performance of conventional cylindrical tool. In addition to improvements in other responses, a 49% reduction in the machining time has been realized by the use of relief-angled electrode indicating a worthwhile contribution in the field of electric discharge machining.

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“…The optimization techniques possess benefits in terms of reducing time and cost analysis. Researchers have explored different avenues for optimization techniques in which gray relational analysis (GRA) optimization techniques have better responsiveness for different materials in the case of EDM [29,30]. In addition, several optimization techniques, such as Taguchi technique with GRA [31], artificial neural network (ANN), and evolutionary algorithms, such as particle optimization (PSO) and simulated annealing (SA) [32], have been pursued in the past few years.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation and statistical modeling of air-assisted EDM of Al–SiC composite with an improvised tool

Singh

Sharma³

2020

J Braz. Soc. Mech. Sci. Eng.

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The present paper deals with the electrical discharge machining of Al-SiC composite using an air-assisted multi-hole rotary slotted tool. The slot was fabricated on the tool surface to provide easy removal of debris from the inter-electrode gap. The compressed air passed through the multi-hole slotted tool produced a high amount of turbulence and cavitation and directly increased the material removal rate. The influence of process factors such as peak current, tool rotation, discharge air pressure, pulse duration, and duty cycle was investigated by considering them as input parameters with output response, electrode wear ratio and material removal rate (MRR). A comparative analysis of the output response with the solid rotary tool and the air-assisted multi-hole rotary slotted tool was presented. The result shows that the use of the air-assisted multi-hole rotary slotted tool increased the MRR in air-assisted rotary electric discharge drilling (AAEDD) by 40-70%. Moreover, the EWR decreased in AAEDD by 15-25% compared to rotary electric discharge drilling (REDD). The emergence of fewer recast layers and surface cracks in the AAEDD process has been identified compared to the REDD process. A genetic algorithm was utilized to achieve optimal process factors by optimizing the AAEDD for maximizing the MRR and minimizing the EWR.

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Optimization of Process Parameters to Improve Form and Orientation Tolerances in EDM of MoSi₂-SiC Composites

Cited by 39 publications

References 20 publications

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Improving the Performance of EDM through Relief-Angled Tool Designs

Experimental investigation and statistical modeling of air-assisted EDM of Al–SiC composite with an improvised tool

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Optimization of Process Parameters to Improve Form and Orientation Tolerances in EDM of MoSi2-SiC Composites

Cited by 39 publications

References 20 publications

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Enhancing the geometric tolerance of aluminium hybrid metal matrix composite using EDM process

Improving the Performance of EDM through Relief-Angled Tool Designs

Experimental investigation and statistical modeling of air-assisted EDM of Al–SiC composite with an improvised tool

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Optimization of Process Parameters to Improve Form and Orientation Tolerances in EDM of MoSi₂-SiC Composites