[Retracted] Optimization of Process Parameters for Friction Stir Welding of Different Aluminum Alloys AA2618 to AA5086 by Taguchi Method

Table 6

SNR (signal to noise ratio).

Level	A	B	C	D
1	47.8	47.4	48	41
2	45.2	49.2	48.1	48.1
3	49.6	48	46	47.4
4	47.4	46.2	44	4.6
Delta	4.1	3.1	2.1	7.2
Rank	2	3	4	1