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

Table 14

Response table for means (hardness) (larger is better).

Level	Peak current (Amps)	Base current (Amps)	Welding speed (mm/min)
1	35.33	47.33	35.33
2	39.33	39.33	40.00
3	42.00	30.00	41.33
Delta	6.67	17.33	6.00
Rank	2	1	3