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Table 8 Pooled ANOVA- Tool life

From: Impact of nose radius and machining parameters on surface roughness, tool wear and tool life during turning of AA7075/SiC composites for green manufacturing

Source Sum of squares DF Mean squares F Value Prob > F
Model 62.21 8 7.53 19.82* <  0.0001 significant
A 10.89 1 10.89 28.68* <  0.0001
B 8.96 1 8.96 23.60* <  0.0001
C 18.20 1 18.20 47.93* <  0.0001
D 6.72 1 6.72 17.70* 0.0004
C2 9.45 1 9.45 24.89* <  0.0001
D2 2.17 1 2.17 5.71* 0.0263
BD 2.18 1 2.18 5.73* 0.0261
CD 2.64 1 2.64 6.95* 0.0154
Residual 7.97 21 0.38 3.37 0.0701 not significant
Lack of Fit 7.38 16 0.46
Pure Error 0.59 5 0.12
Cor Total 68.18 29
  1. * Significant at 95% confidence interval