OCTOBER 19-20, 2012 - YMCA University of Science & Technology

Proceedings of the National Conference on
Trends and Advances in Mechanical Engineering,
YMCA University of Science & Technology, Faridabad, Haryana, Oct 19-20, 2012
While after pooling the Final Equation in Terms of Actual Factors is as follows:
2
R z =-42.16263+0.44524×T on -0.61505×T off -0.15141×SV+0.16195×IP+4.28286×WT+2.91071E-003 ×T off +
9.76875E-004×SV 2 +7.85417E-005×IP 2 -0.018609×WT 2 +3.23512E-003 ×T on ×T off -1.09097E-003×T on ×IP-
0.033365×T on ×WT+1.12232E-003×T off ×SV-7.25893E-004 ×T off ×IP+4.92411E-003×T off ×WT-3.48646E-
003×IP×WT
Table 4 shows the confirmation test at various selected parameters settings at which surface roughness
minimizes.
4.989
W arning ! Factor involved in an interactio
99
Normal % Probability
95
90
80
70
50
30
20
10
5
Response 1
4.38988
3.79075
3.19162
1
2.5925
-1.80 -0.83 0.13 1.10 2.07
111.00 112.50 114.00 115.50 117.00
Studentized R esiduals
A: Ton
Figure 1: Normal probability plot of residuals for R z
Figure 2(a): Effect of pulse-on-time on R z
Table 4: confirmation Test
Sr. No. Ton
Toff SV IP WT Pred. Rz
Actual Rz
Desirability
1 111 42.59 50 120 8 2.99875 3.14 0.83
2 111 42.78 50 120 8 2.99894 3.07 0.83
3 111 42.49 50 120 8 2.99896 3.02 0.83
4.989
W arning ! Factor involved in an interaction
4.989
W arning ! Factor involved in an interactio
4.38988
4.38988
Response 1
3.79075
Response 1
3.79075
3.19162
3.19162
2.5925
2.5925
36.00 39.50 43.00 46.50 50.00
30.00 35.00 40.00 45.00 50.00
B: Tof f
Figure2(c) :Effect of servo voltage on R z
C : SV
Figure 2(b):Effect of pulse off time on R z
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