[Retracted] Experimental Investigation and Optimization on Friction Stir Welding of Nylon 6A Using Taguchi and ANOVA with Microstructural Analysis

Table 2

Taguchi L₂₇ orthogonal array.

S. No.	TRS (rpm)	Feed rate (mm/min)	Pitch (mm)
1	500	30	1
2	500	30	2
3	500	30	3
4	500	40	1
5	500	40	2
6	500	40	3
7	500	50	1
8	500	50	2
9	500	50	3
10	1000	30	1
11	1000	30	2
12	1000	30	3
13	1000	40	1
14	1000	40	2
15	1000	40	3
16	1000	50	1
17	1000	50	2
18	1000	50	3
19	1500	30	1
20	1500	30	2
21	1500	30	3
22	1500	40	1
23	1500	40	2
24	1500	40	3
25	1500	50	1
26	1500	50	2
27	1500	50	3