Investigating the Possibility to Reduce the Residual Stress Level in 2.5D Cutting Using Titanium Coated Carbide Ball End Mill

Table 6

TPM and response data for microhardness.

Level of input parameters ()	TPM response data (HV)				response data (dB)
	Level 1 ( = 1)	249.89	279.44	255.67	250.33	143.81	146.75	144.43	143.87
Level 2 ( = 2)	259.44	249.67	257.44	258.67	144.76	143.80	144.51	144.66
Level 3 ( = 3)	261.33	241.56	257.56	261.67	144.94	142.96	144.57	144.98
Difference	11.44	37.89	1.89	11.33	1.13	3.80	0.14	1.11
Rank	2	1	4	3	2	1	4	3