Analytical and Neural Network Analysis on Flux-Coated Aluminium Alloy by Activated TIG Welding with Synthesized Nanocomposites

Table 5

Coded coefficients for hardness response with various A-TIG process parameters.

Term	Coef	SE coef	T-value	P-value
Constant	87.67	2.44	35.91	0.001
Welding speed	−3.13	1.50	−2.09	0.091
Voltage	−1.62	1.50	−1.09	0.327
Current	−1.50	1.50	−1.00	0.362
Welding speed × welding speed	−1.58	2.20	−0.72	0.504
Voltage × voltage	0.42	2.20	0.19	0.857
Current × current	−2.33	2.20	−1.06	0.338
Welding speed × voltage	0.00	2.11	0.00	1.000
Welding speed × current	−1.25	2.11	−0.59	0.580
Voltage × current	0.75	2.11	0.35	0.737