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Table 5 Sequential Model Sum of Squares- Surface roughness

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

273.42

1

273.42

   

Linear

7.07

4

1.77

21.43

<  0.0001

 

2FI

0.49

6

0.081

0.98

0.4655

 

Quadratic

1.36

4

0.34

24.49

<  0.0001

Suggested

Cubic

0.16

8

0.019

2.56

0.1168

Aliased

Residual

0.053

7

7.612E-003

   

Total

282.55

30

9.42

   
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