Table 6 ANOVA results of quadratic model (wear rate is response) for hot rolled steel.

From: Mathematical modeling of wear behavior and Abbott Firestone zones of 0.16C steel using response surface methodology

Source

Sum of squares

df

Mean square

F-value

p-value

 

Model

1.33

7

0.1893

294.64

 < 0.0001

Significant

A-Pressure

0.2650

1

0.2650

412.44

 < 0.0001

 

B-Velocity

0.1653

1

0.1653

257.30

 < 0.0001

 

AB

0.1139

1

0.1139

177.29

 < 0.0001

 

A2

0.3539

1

0.3539

550.78

 < 0.0001

 

B2

0.0711

1

0.0711

110.67

0.0001

 

A2B

0.1251

1

0.1251

194.64

 < 0.0001

 

AB2

0.0414

1

0.0414

64.47

0.0005

 

Residual

0.0032

5

0.0006

   

Lack of fit

0.0032

1

0.0032

   

Pure error

0.0000

4

0.0000

   

Cor total

1.33

12

    

Std. dev.

0.0253

R2

0.9976

Mean

0.6058

Adjusted R2

0.9942

C.V.%

4.18

Predicted R2

0.7190

PRESS

1.72

Adeq precision

51.3323

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