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Table 8.16
DOE1 parameters and experiment levels
Parameter
Level
Minimum
Middle
Maximum
Injection time (s)
0.5
10
20
Injection temperature (C)
220
245
270
Mold temperature (C)
40
50
60
Packing pressure (MPa)
30
60
90
Packing time (s)
7
11
15
Table 8.2 DOE1 central composite design settings
S
(5-1)
central composite design—27 settings
Injection
time (s)
Injection
temperature (C)
Mold
temperature(C)
Packing
pressure (MPa)
Packing
time (s)
Residual
stress (MPa)
1
0.5
220
40
30
15
41.24
2
0.5
220
40
90
7
29.54
3
0.5
220
60
30
7
41.28
4
0.5
220
60
90
15
29.44
5
0.5
270
40
30
7
37.07
6
0.5
270
40
90
15
26.62
7
0.5
270
60
30
15
35.77
8
0.5
270
60
90
7
41.18
9
20.0
220
40
30
7
30.12
10
20.0
220
40
90
15
19.81
11
20.0
220
60
30
15
30.10
12
20.0
220
60
90
7
19.81
13
20.0
270
40
30
15
25.92
14
20.0
270
40
90
7
15.12
15
20.0
270
60
30
7
25.96
16
20.0
270
60
90
15
15.10
17
0.5
245
50
60
11
31.74
18
20.0
245
50
60
11
21.66
19
10.0
220
50
60
11
28.15
20
10.0
270
50
60
11
22.43
21
10.0
245
40
60
11
24.27
22
10.0
245
60
60
11
24.27
23
10.0
245
50
30
11
32.81
24
10.0
245
50
90
11
20.25
25
10.0
245
50
60
7
24.28
26
10.0
245
50
60
15
24.25
27
10.0
245
50
60
11
24.27
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