Influence of Process Parameters on Tensile Strength of the Friction Welded AA6063-T6 Joints by Box–Behnken Design Approach

Table 6

Testament results.

Trail no.	Parameters range			TS (MPa)		Deviation %
	f	T	P	Experimentally evaluated	Empirically calculated
1	4	6	2.5	226.5	227.3	−0.37
2	3	4	2.5	222.3	220.89	0.633
3	2	6	2.5	195.1	198.03	−1.51