Table 3 Variables in RSM experimental design for PA.

From: Combining response surface methodology and measurement system analysis to identify melt flow index of hygrothermal-sensitive composites

Blocks

1

2

Factors

Coded levels

\(\:\varvec{\alpha\:}=1.633\)

Test loads (kg)

5

2.16

-1

0

1

\(\:-\varvec{\alpha\:}\)

\(\:+\varvec{\alpha\:}\)

   

A: 1/Temperature (°C)

1/250

1/230

1/210

1/260

1/200

   

B: Pre-heat time (min)

2

3

4

1

5

   

C: Drying time (h)

3

8

12

0

15

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