Microfriction Stir Welding of Aluminium Using ABB IRB 1410 Robot

Table 14

Optimized parameter combination.

Factors	Initial values	Optimized parameters
Setting level	A1 B1 C1	Prediction	Experiment
		A3 B2 C3	A3 B2 C3
DOP (mm)	0.4989	—	0.70012
BW (mm)	3.48	—	3.5
Hardness (HV)	42.3	—	43.3
Pi	0.324993	0.402025	0.410251