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

Table 6

Response for ratios of UTS.

Level	TRS	Feed rate	Pitch
1	28.92	27.99	27.88
2	27.53	26.60	27.36
3	26.33	28.20	27.54
Delta	2.59	1.60	0.52
Rank	1	2	3