Taguchi Robust Design for Optimizing Surface Roughness of Turned AISI 1045 Steel Considering the Tool Nose Radius and Coolant as Noise Factors

Table 2

The control factors and their levels used in the current study.

Designation	Process parameter	Level 1	Level 2	Level 3
S	Cutting speed (m/min)	100	125	150
DOC	Depth of cut (mm)	0.25	0.5	0.75
FR	Feed rate (mm/rev)	0.05	0.10	0.15