[Retracted] Effect of Tool Profile Influence in Dissimilar Friction Stir Welding of Aluminium Alloys (AA5083 and AA7068)

Table 4

Analysis of variance result.

Source	DF	Seq SS	Contribution (%)	Adj SS	Adj MS	F value	value
Model	13	23106.8	94.36	23106.8	1777.44	2.57	0.314
Linear	4	6937.3	28.33	9341.1	2335.27	3.38	0.241
Rotational speed (rpm)	1	3712.8	15.16	8831.8	8831.78	12.79	0.07
Welding speed (mm/min)	1	2132.1	8.71	173.6	173.55	0.25	0.666
Axial force (kN)	1	4.5	0.02	24	23.97	0.03	0.869
Plate thickness (mm)	1	1087.8	4.44	482.4	482.44	0.7	0.491
Square	4	7388.2	30.17	10407.1	2601.76	3.77	0.221
Rotational speed (rpm)Rotational speed (rpm)	1	410.1	1.67	7691.4	7691.38	11.14	0.079
Welding speed (mm/min)Welding speed (mm/min)1	1	637.6	2.60	637.6	637.56	0.92	0.438
Axial force (kN)Axial force (kN)	1	2889.1	11.80	6029.5	6029.52	8.73	0.098
Plate thickness (mm)Plate thickness (mm)	1	3451.6	14.09	5363.3	5363.28	7.77	0.108
2-way interaction	5	8781.3	35.86	8781.3	1756.25	2.54	0.306
Rotational speed (rpm)Welding speed (mm/min)	1	2.9	0.01	127.6	127.96	0.18	0.709
Rotational speed (rpm)Axial force (kN)	1	192.2	0.79	56	5816.96	0.86	0.803
Rotational speed (rpm)Plate thickness (mm)	1	435.8	1.78	435.8	1435.75	0.63	0.51
Welding speed (mm/min)Axial force (kN)	1	10.2	0.04	7705	7705	11.16	0.079
Welding speed (mm/min)Plate thickness (mm)	1	8140.2	33.24	8140.2	8140.17	11.79	0.075
Error	2	1381.2	5.64	1381.2	690.59
Total	15	24487.9	100.00