Table 4 S/N ratio’s response for machining time (MT) and degree of circularity (DOC).

From: Process optimization in micro electrical discharge machining of carbon kevlar hybrid composite using TOPSIS

 

Voltage

EDM Feed

Tool Speed

For MT

1

−61.93

−60.87

−61.40

2

−60.73

−61.05

−61.12

3

−60.42

−61.16

−60.56

Delta

1.50

0.29

0.84

Rank

1

3

2

For DOC

1

−0.5854

−0.6379

−0.8714

2

−0.6505

−0.6398

−0.6056

3

−0.7276

−0.6857

−0.4866

Delta

0.1422

0.0478

0.3848

Rank

2

3

1

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