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Table 7

Results of validation test of MLR model and their percentage of error.

Depth of cut (mm) Feed (mm/rev) Cutting speed (m/min) Acceleration in Y-direction (m/s2) Experimental VBc Experimental Ra Predicted (VBc) Predicted (Ra) % of error (VBc) % of error (Ra)
0.1 0.08 147 0.664 0.195 0.75 0.22 0.96 −12.82 −28
0.2 0.08 67 0.362 0.191 0.68 0.224 0.76 −17.27 −11.76
0.3 0.12 147 1.435 0.297 1.35 0.33 1.2 −11.11 11.11
0.2 0.12 113 0.502 0.228 0.82 0.26 0.93 −14.03 −13.41
Average percentage of error (%) 13.8 16.07

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