Table 7 ANOVA results of quadratic model (wear rate is response) for QAMf 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

25.66

7

3.67

192.52

 < 0.0001

Significant

A-Pressure

8.32

1

8.32

436.94

 < 0.0001

 

B-Velocity

0.0002

1

0.0002

0.0092

0.9273

 

AB

0.0095

1

0.0095

0.4966

0.5125

 

A2

9.56

1

9.56

501.93

 < 0.0001

 

B2

6.96

1

6.96

365.66

 < 0.0001

 

A2B

0.0837

1

0.0837

4.40

0.0901

 

AB2

1.12

1

1.12

58.83

0.0006

 

Residual

0.0952

5

0.0190

   

Lack of fit

0.0952

1

0.0952

   

Pure error

0.0000

4

0.0000

   

Cor total

25.76

12

    

Std. dev.

0.1380

R2

0.9963

Mean

2.51

Adjusted R2

0.9911

C.V.%

5.50

Predicted R2

0.5705

PRESS

12.91

Adeq precision

50.7807

Back to article page