F8.

F7

F6

F5

F4

F3

F2

F1

Run

Level

Level

Level

Level

Level

Level

Level

Level

1

1

1

1

1

1

1

1

1

2

2

2

2

2

2

1

1

2

3

3

3

3

3

3

1

1

3

2

2

1

3

3

1

2

1

4

3

3

2

1

1

2

2

1

5

1

1

3

2

2

3

2

1

6

3

1

2

3

2

1

3

1

7

1

2

3

1

3

2

3

1

8

2

3

1

2

1

3

3

1

9

2

3

3

1

2

1

1

2

10

3

1

1

2

3

2

1

2

11

1

2

2

3

1

3

1

2

12

1

3

2

2

3

1

2

2

13

2

1

3

3

1

2

2

2

14

3

2

1

1

2

3

2

2

15

3

2

3

2

1

1

3

2

16

1

3

1

3

2

2

3

2

17

2

1

2

1

3

3

3

2

18

Table 4: L-18 Design of experimental according to Taguchi method for both sets of experiments.