Table 9.
Ranges of selected factors for PVS without riffles.
| Level and range of factors variation | Factors | ||
|---|---|---|---|
| X 1 | X 2 | ||
| Surface thickness hs, mm | Pitch of holes arrangement ph, mm | ||
| bh = 3.2 mm | bh = 5 mm | ||
| + 1 | 1.2 | 6 | 7.5 |
| 0 | 1 | 6.4 | 8 |
| − 1 | 0.8 | 6.8 | 8.5 |
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