Parametric Optimization of Laser Additive Manufacturing of Inconel 625 Using Taguchi Method and Grey Relational Analysis

Table 6

Significance of factors for surface roughness and width error.

Response factor	Factors	Mean S/N ratio			Range	Rank
		Level 1	Level 2	Level 3
Surface roughness ()	LP	13.432	16.645	15.124	3.213	2
	SS	14.676	15.281	15.244	0.605	4
	PFR	16.014	13.940	15.247	2.074	3
	OR	17.176	15.694	12.331	4.845	1
Width error ()	LP	20.064	19.357	17.842	2.222	3
	SS	19.850	15.968	21.445	5.477	2
	PFR	19.938	18.755	18.569	1.369	4
	OR	25.667	16.423	15.173	10.494	1