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Table 6 Sequential Model Sum of Squares- 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 Square

F Value

Prob > F

 

Mean

304.01

1

304.01

   

Linear

44.77

4

11.19

11.95

<  0.0001

 

2FI

5.60

6

0.93

1.00

0.4557

 

Quadratic

12.72

4

3.18

9.39

0.0005

Suggested

Cubic

2.65

8

0.33

0.96

0.5306

Aliased

Residual

2.43

7

0.35

   

Total

372.19

30

12.41

   
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