Multi-optimization of process parameters for machining of a non-conductive SiC ceramic composite by non-conventional machining method

Abstract

The objective of the study is to predict the optimized set of the input parameters for the machining of non-conductive silicon carbide (SiC) by electric discharge machining (EDM). The insulated SiC ceramic composite machining was performed with 4 volumes (by percentage) of carbon nano (CNT) the SiC, which makes it electrically conductive. SiC has very good mechanical properties due to its widespread application in the aerospace, MEMS, and bio-sensor industries. This application requires a highly precise machining hole with a good surface quality that can be processed by machining processes such as EDM. The input parameters in this study are differing by three levels and the experimentation has been done by L27 orthogonal array. Four output parameters such as material removal rate (MRR), plasma flushing efficiency (PFE), surface-roughness (SR) and recast layer thickness (Rlt) for has been calculated for the detailed experimental analyses. In this research, a comparative analysis between the Multi-attribute management mechanisms (MADM) i.e. WPCA, MOORA & MOORA, and WPCA was conducted. The statistical analysis was also conducted to determine the impact of input parameters on performance measures. The study concluded that by integrating MOORA 's method with a PCA, the highest MRRs of 2.56 mm3/min & 78% PFE, lowest SR 2.1 µm, and Rlt 2.56 µm were obtained, with an experimental testing error of 5 percent.

Application of MOORA & COPRAS integrated with entropy method for multi-criteria decision making in dry turning process of Nimonic C263

“…Using the equations [9][10][11][12][13][14], relative weight, utility degree and its rank were calculated. The results are shown in Table 6.…”

“…The machining parameters were optimized in Electrical Discharge Machining (EDM) operation using MOORA technique and observed the optimum outputs such as material removal rate (MRR), plasma flushing efficiency (PFE), surface-roughness (SR) and recast layer thickness were achieved by intermingling MOORA with Weighted Principal Component Analysis (WPCA) [12].…”

Critical Analysis of the Selection of Non-Conventional Machining Processes

“…Some feasible NCM procedure satisfying the requirement of users was initially generated and those procedures were ranked with respect to their suitability to meet the required machining standards and operations. P. Chaudhury and S. Samantaray in [2] developed professional systems for choosing the best NCM procedure under constrained machining and material conditions. It would depend on the priority figures of various criteria and sub-criteria for particular NCM procedure 'choice' issue, and NCM procedure with higher acceptability index was finally recognized.…”

Thermal Modelling and Multi Decision Making Optimization of EDM of Non Conductive SiC-CNT Ceramic Composite Used for Li-ion Battery and Sensor

“…As a conclusion, he demonstrated that the model established by DiBitonto et al [1] has the strongest agreement with experimental data. Recently published papers (Shuvra Das et al [3]; Kansal et al [17]; Marafona and Chousal [18]; Ghanem et al [19]; Salah, N.B et al [20,21]; Bhondwe et al [22];…”

“…Shuvra Das et al [3], Ghanem et al [19], and Salah et al [20,21] recommended an 18% value, while Vinod Yadav et al [23] recommended an 8% value. Marafona and Chousal [18] assume that the fraction of energy transmitted to the workpiece is 50%. According to Kansal et al [17] and Bhondwe et al [22], the powder fraction (Fc) is dependent on the dielectric fluid used.…”