Research Article
Evaluation of Parameters Affecting Magnetic Abrasive Finishing on Concave Freeform Surface of Al Alloy via RSM Method
Figure 17
Central composite designs for optimization: (a) two variables (α = 1.41) and (b) three variables (α = 1.68); (): points of factorial design, (): axial points, and (): central point.
(a) |
(b) |