Table 2.

Experimental results of residual stress measurements carried out according to the scheme shown in Fig. 7(a) for 0.8 mm insert radius machined specimens.

Run	Factor Ir: Insert radius (mm)	Factor Dc: Depth of cut (mm)	Factor Cs: Cutting speed (m/min)	Factor Fr: Feed rate (mm/rev)	Principal stresses
					σmax (MPa)	σmin (MPa)	φ (angle)
35	0.8	0.05	138	0.15	495.5	227.7	−50.8
36	0.8	0.05	138	0.15	669.8	356.8	−48.1
37	0.8	0.10	107	0.10	175.8	−95.3	−47.4
38	0.8	0.10	107	0.10	−19.3	−279.6	−71.4
39	0.8	0.10	107	0.20	759.7	398.7	−32.1
40	0.8	0.10	107	0.20	533.4	277.4	−37.3
41	0.8	0.10	169	0.20	650.1	334.3	−41.0
42	0.8	0.10	169	0.20	746.9	415.2	−39.3
43	0.8	0.10	169	0.10	416.5	34.3	−41.4
44	0.8	0.10	169	0.10	413.1	77.9	−43.6
45	0.8	0.15	76	0.15	249.3	−8.5	−42.2
46	0.8	0.15	76	0.15	450.0	98.6	−39.2
47	0.8	0.15	138	0.05	−290.5	−613.1	−49.9
48	0.8	0.15	138	0.05	−439.5	−664.2	−49.8
49	0.8	0.15	138	0.15	370.9	136.7	−56.2
50	0.8	0.15	138	0.15	502.0	204.2	−43.7
51	0.8	0.15	138	0.15	330.0	112.7	−59.2
52	0.8	0.15	138	0.15	689.1	324.3	−38.8
53	0.8	0.15	138	0.15	681.7	314.2	−38.6
54	0.8	0.15	138	0.15	523.3	237.7	−50.3
55	0.8	0.15	138	0.25	782.9	439.1	−33.5
56	0.8	0.15	138	0.25	824.3	506.9	−32.7
57	0.8	0.15	200	0.15	509.6	171.0	−45.1
58	0.8	0.15	200	0.15	662.3	287.4	−42.0
59	0.8	0.20	107	0.10	188.4	−65.4	−51.6
60	0.8	0.20	107	0.10	253.8	−17.9	−62.0
61	0.8	0.20	107	0.20	770.2	413.8	−32.1
62	0.8	0.20	107	0.20	690.7	343.6	−34.4
63	0.8	0.20	169	0.20	697.4	355.5	−43.4
64	0.8	0.20	169	0.20	649.6	290.0	−36.2
65	0.8	0.20	169	0.10	182.6	−65.4	−52.9
66	0.8	0.20	169	0.10	573.2	187.3	−45.8
67	0.8	0.25	138	0.15	89.0	−91.9	20.3
68	0.8	0.25	138	0.15	593.9	255.4	51.0