Material Removal Rate, Electrode Wear Rate, and Surface Roughness Evaluation in Die Sinking EDM with Hollow Tool through Response Surface Methodology

Figure 4

Response surface plot for SR: (a) factor plot, (b) factor plot, (c) factor plot, (d) contour plot between and , ((e) and (f)) interactions plot between and , (g) normal plot of residuals, (h) residuals versus predicted values, and (i) predicted versus actual values.

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