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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
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