International Journal of Manufacturing Engineering / 2014 / Article / Tab 6

Research Article

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

Table 6

The analysis of variance for main and interaction effects of parameters on SR.

SourceSSDOFMS valueProb > At 95% CI% contribution

A20.5210.5237.30 0.0002Significant0.96
BC0.08110.0815.83 0.0389Significant0.15
Lack of fit0.03450.29 0.8937Nonsignificant
Adjusted 0.9959
Predicted 0.9921

CI: confidence interval; DOF: degrees of freedom; MS: mean sum of squares; SS: sum of squares.

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