16 60 250 80 2 10 9.481

17 60 250 80 2 15 9.491

18 60 250 80 2 20 9.483

19 80 230 120 2 10 8.685

20 80 230 120 2 15 8.683

21 80 230 120 2 20 8.686

22 80 240 80 3 10 8.769

23 80 240 80 3 15 8.652

24 80 240 80 3 20 8.645

25 80 250 100 1 10 9.921

26 80 250 100 1 15 9.979

27 80 250 100 1 20 9.659

with the measured values and to prove the accuracy of the

regression model created.

2. Experimental Methodology

2.1 Taguchi Orthogonal Array Design of Experiments

The design of experiments utilizing the orthogonal arrays is, in most cases, efficient and easy to use when compared to the traditional experimental design methods. It is necessary to reduce and to control the number of experiments. Furthermore, a large number of experiments have to be performed when the number of process parameters increases. In this study, 27 FE analyses based on Taguchi (L27) orthogonal arrays were run by utilizing plastic injection process parameters such as the mold temperature (Tmold), melt temperature (Tmelt), injection pressure (Pinj), injection time (Itime), and cooling time (Ctime) as shown in Table 1. The shrinkage parameter corresponds to the response value in developing the regression model. The shrinkage results obtained from FE analyses in Moldflow simulations are provided in Table  2.