Modeling and Optimizing the Effects of Insert Angles on Hard Turning Performance

Table 6

Analysis of variance for feed CF (Fx).

Source	DF	Seq SS	Contribution (%)	Adj SS	Adj MS	F-value	P-value
Model	9	297.886	95.43	297.886	33.098	23.21	<0.0001
Linear	3	38.470	12.32	38.470	12.823	8.99	0.003
κr	1	15.327	4.91	15.327	15.327	10.75	0.008
γo	1	2.412	0.77	2.412	2.412	1.69	0.223
λs	1	20.732	6.64	20.732	20.732	14.54	0.003
Square	3	256.976	82.32	256.976	85.659	60.06	<0.0001
κr^∗ κr	1	74.165	23.76	97.153	97.153	68.12	<0.0001
γo^∗γo	1	177.831	56.97	181.792	181.792	127.46	<0.0001
λs^∗λs	1	4.980	1.60	4.980	4.980	3.49	0.091
2-way interaction	3	2.440	0.78	2.440	0.813	0.57	0.647
κr^∗γo	1	1.800	0.58	1.800	1.800	1.26	0.287
κr^∗λs	1	0.326	0.10	0.326	0.326	0.23	0.643
γo^∗λs	1	0.313	0.10	0.313	0.313	0.22	0.649
Error	10	14.262	4.57	14.262	1.426
Lack-of-fit	5	10.144	3.25	10.144	2.029	2.46	0.172
Pure error	5	4.118	1.32	4.118	0.824
Total	19	312.148	100.00