Investigation of the TIG Welding Process for Joining AA6082 Alloy Using Grey Relational Analysis

Table 4

ANOVA for GRG.

Source	DF	Seq SS	Adj SS	Adj MS	F	P	% contribution
Welding current (A)	2	0.032507	0.032507	0.016254	4.9	0.169	46.65
Travel speed (mm/min)	2	0.011356	0.011356	0.005678	1.71	0.369	16.30
Gas flow rate (lit/min)	2	0.019195	0.019195	0.009597	2.9	0.257	27.54
Residual error	2	0.006628	0.006628	0.003314			9.51
Total	8	0.069686	0.069686