Table 2.
Assignment of six factors and their selected levels in the L8(27) orthogonal array and predicted peak maximum principal strain (MPS) in the cerebrum, hippocampus, and cerebellum.
| Case number | Factors | Predicted peak MPS | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | E | F | Cerebrum | Hippocampus | Cerebellum | ||
| 1 | 1 | 3 | Central | 6 | Steel | Flat | 0.1775 | 0.1466 | 0.1535 | |
| 2 | 1 | 3 | Lateral | 6 | Nylon | Convex | 0.2283 | 0.1593 | 0.0326 | |
| 3 | 1 | 6 | Central | 12 | Steel | Convex | 0.2061 | 0.0912 | 0.0494 | |
| 4 | 1 | 6 | Lateral | 12 | Nylon | Flat | 0.4080 | 0.2993 | 0.1261 | |
| 5 | 2 | 3 | Central | 12 | Nylon | Flat | 0.6192 | 0.3644 | 0.3890 | |
| 6 | 2 | 3 | Lateral | 12 | Steel | Convex | 0.3744 | 0.3080 | 0.1238 | |
| 7 | 2 | 6 | Central | 6 | Nylon | Convex | 0.3047 | 0.2204 | 0.1976 | |
| 8 | 2 | 6 | Lateral | 6 | Steel | Flat | 0.4982 | 0.4092 | 0.2893 | |
A (impact depth, mm), B (impact velocity, m/s), C (impact position), D (impactor diameter, mm), E (impactor material), and F (impactor shape).