Optimization of FCAW Parameters for Ferrite Content in 2205 DSS Welds Based on the Taguchi Design Method

Table 4

ANOVA and R-square table for ferrite content reduced quadratic model.

Source	Sum of squares	DF	Mean square	F value	Prob > F
Model	437.98	5	87.6	3170.36	<0.0001	Significant
I	102.97	1	102.97	3726.65	<0.0001	Significant
U	82.88	1	82.88	2999.74	<0.0001	Significant
S	138.24	1	138.24	5003.32	<0.0001	Significant
T	19.8	1	19.8	716.68	0.0001	Significant
US	2.12	1	2.12	76.58	0.0031	Significant
Residual	0.083	3	0.028
Cor. total	438.06	8
R^2 = 0.9998				Pred R^2 = 0.9957
Adj. R^2 = 0.9995				Adeq Precision = 146.135