Taguchi Robust Design for Optimizing Surface Roughness of Turned AISI 1045 Steel Considering the Tool Nose Radius and Coolant as Noise Factors

Table 4

ratio for the L27 orthogonal inner array.

#		#		#
L01	−4.53567	L10	−5.36497	L19	−5.51797
L02	−0.90376	L11	−1.39333	L20	−3.96571
L03	3.43843	L12	0.62490	L21	−2.33181
L04	−2.87199	L13	−3.79391	L22	−5.46450
L05	−0.60185	L14	−2.15754	L23	−4.63266
L06	2.10752	L15	−0.10513	L24	−3.82173
L07	−2.45098	L16	−5.42733	L25	−8.03586
L08	−1.36208	L17	−3.67699	L26	−6.56900
L09	0.12517	L18	−1.34791	L27	−5.17539