Developments in Ceramic Materials Research

Recent Advances in Rotary Ultrasonic Machining of Ceramics 45
4.2. Effects of Process Parameters on Surface Roughness
All the process parameters have significant effects on surface roughness. Surface
roughness (Ra) decreases as spindle speed increases, as shown in Figure 13(a). Ra decreases
as vibration power increases, as shown in Figure 13(b). Ra increases as feedrate increases, as
shown in Figure 13(c). Ra decreases as grit size decreases, as shown in Figure 13(d).
a b
c d
Figure 13. Effects on surface roughness in RUM of SiC (after [Churi et al., 2007]).
Figure 14. Two-factor interaction effects on surface roughness in RUM of SiC (after [Churi et al.,
2007]).