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Ranges of selected factors for riffled PVS.
| Level and range of factors variation | Factors | ||||
|---|---|---|---|---|---|
| X 1 | X 2 | X 3 | |||
| Surface thickness hs, mm | Riffle radius Rr, mm | Pitch of riffles arrangement pb, mm | |||
| bh = 3.2 mm | bh = 5 mm | bh = 3.2 mm | bh = 5 mm | ||
| + 1 | 1.2 | 1.8 | 2.5 | 6 | 7.5 |
| 0 | 1 | 2.1 | 3 | 6.4 | 8 |
| − 1 | 0.8 | 2.4 | 3.5 | 6.8 | 8.5 |
