Experimental Investigation of AA6063 Welded Joints Using FSW

Table 8

Analysis of variance for S/N ratios.

Sources	DF	Adj SS	Adj MS	F	P
Rotational speed (RPM)	2	0.5634	0.28168	1.24	0.447
Welding speed (mm/min)	2	0.1276	0.06378	0.28	0.781
Tool tilt angle (degree)	2	4.1996	2.0998	9.22	0.098
Residual error	2	0.4553	0.22765
Total	8	5.3458