Optimization of Process Parameters for Laser Cutting Process of Stainless Steel 304: A Comparative Analysis and Estimation with Taguchi Method and Response Surface Methodology

Table 4

L₉ orthogonal array for 4 factors and 3 levels design (Taguchi).

No. of experiment	A	B	C	D		No. of experiment	A	B	C	D
1	1	1	1	1		1	1900	15	19000	2.5
2	1	2	2	2		2	1900	20	19500	3.25
3	1	3	3	3		3	1900	25	20000	4
4	2	1	2	3		4	1950	15	19500	4
5	2	2	3	1		5	1950	20	20000	2.5
6	2	3	1	2		6	1950	25	19000	3.25
7	3	1	3	2		7	2000	15	20000	3.25
8	3	2	1	3		8	2000	20	19000	4
9	3	3	2	1		9	2000	25	19500	2.5