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

Table 5

Analysis of Variance for tangential CF (Fz).

Source	DF	Seq SS	Contribution (%)	Adj SS	Adj MS	F value	value
Model	9	140.666	94.35	140.666	15.6296	18.54	<0.0001
Linear	3	71.465	47.93	71.465	23.8216	28.26	<0.0001
κr	1	24.990	16.76	24.990	24.9902	29.64	<0.0001
γo	1	19.429	13.03	19.429	19.4289	23.05	0.001
λs	1	27.046	18.14	27.046	27.0458	32.08	<0.0001
Square	3	57.996	38.90	57.996	19.3319	22.93	<0.0001
κr^∗ κr	1	26.842	18.00	25.541	25.5407	30.29	<0.0001
γo^∗γo	1	13.023	8.73	10.282	10.2818	12.20	0.006
λs^∗λs	1	18.131	12.16	18.131	18.1306	21.51	0.001
2-way interaction	3	11.205	7.52	11.205	3.7352	4.43	0.032
κr^∗γo	1	3.838	2.57	3.838	3.8378	4.55	0.059
κr^∗λs	1	5.420	3.64	5.420	5.4203	6.43	0.030
γo^∗λs	1	1.947	1.31	1.947	1.9474	2.31	0.160
Error	10	8.431	5.65	8.431	0.8431
Lack-of-fit	5	4.289	2.88	4.289	0.8577	1.04	0.485
Pure error	5	4.142	2.78	4.142	0.8284
Total	19	149.097	100.00