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 5

ANOVA table.

Source	DF	Adj SS	Adj MS	F-value	p value
Model	14	0.499766	0.035698	5.44	0.003
Linear	4	0.290550	0.072638	11.07	0.001
A	1	0.039675	0.039675	6.05	0.030
B	1	0.019200	0.019200	2.93	0.113
C	1	0.004800	0.004800	0.73	0.409
D	1	0.226875	0.226875	34.59	<0.001
Square	4	0.082841	0.020710	3.16	0.055
A∗A	1	0.003115	0.003115	0.47	0.504
B∗B	1	0.000023	0.000023	0.00	0.954
C∗C	1	0.004934	0.004934	0.75	0.403
D∗D	1	0.072593	0.072593	11.07	0.006
2-way interaction	6	0.126375	0.021063	3.21	0.040
A∗B	1	0.001600	0.001600	0.24	0.630
A∗C	1	0.002025	0.002025	0.31	0.589
A∗D	1	0.090000	0.090000	13.72	0.003
B∗C	1	0.002025	0.002025	0.31	0.589
B∗D	1	0.030625	0.030625	4.67	0.052
C∗D	1	0.000100	0.000100	0.02	0.904
Error	12	0.078708	0.006559
Lack-of-fit	10	0.074908	0.007491	3.94	0.219
Pure error	2	0.003800	0.001900
Total	26	0.578474