[Retracted] Optimization on Operation Parameters in Reinforced Metal Matrix of AA6066 Composite with HSS and Cu

Table 5

Surface roughness on the machined surface response ratios of signal to noise.

Level	Pressure of cutting fluid, Pr (bar)	Feed, F (mm/rev)	Depth of cut, D (mm)
1	−11.596	−10.830	−9.050
2	−8.685	−9.272	−9.862
3	−11.502	−11.681	−12.871
Delta	2.911	2.409	3.821
Rank	2	3	1