Weldability Investigation and Optimization of Process Variables for TIG-Welded Aluminium Alloy (AA 8006)

Table 12

Response table for S/N ratios (impact strength) (larger is better).

Level	Peak current (Amps)	Base current (Amps)	Welding speed (mm/min)
1	29.46	24.66	29.39
2	27.86	27.93	27.52
3	26.24	30.97	26.65
Delta	3.21	6.32	2.74
Rank	2	1	3