Open Access

Table 7.

Effect of factors on S/N (Ta)a.

Symbol Factors S/N ratios (dB)
Level 1 Level 2 Level 3
X1 Power 2.452a 41.588 96.945
X2 Pressure 26.944a 51.916 62.124
X3 Frequency 53.842 43.697 43.445a
X4 Cutting speed 55.576 46.244 39.164a
a

Optimum level.

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