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Erreurs et calcul de volume
Effect of length and diameter errors on volume
- Example: Length error of 5 cm
- Example: Diameter error of 5 mm
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EXAMPLE: Length error of 5 cm
Volume deviation: 2 %
| Large end diameter (mm) | Small end diameter (mm) | Length (cm) | Volume (dm³) | Volume difference (%) | |
|---|---|---|---|---|---|
| Actual value | 180 | 100 | 254 | 42,29 | 0 % |
| Inaccurate value | 180 | 100 | 259 | 43,12 | 2 % |
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Example: Diameter Error of + 5 mm
Large size log: volume deviation of 3.3 %
| Large end diameter (mm) | Small end diameter (mm) | Length (cm) | Volume (dm³) | Volume difference (%) | |
|---|---|---|---|---|---|
| Actual value | 350 | 250 | 254 | 184.53 | - |
| Inaccurate value | 355 | 255 | 254 | 190.56 | 3.3 % |
Small size log: volume deviation 6.7 %
| Large end diameter (mm) | Small end diameter (mm) | Length (cm) | Volume (dm³) | Volume difference (%) | |
|---|---|---|---|---|---|
| Actual value | 180 | 100 | 254 | 42.29 | - |
| Inaccurate value | 185 | 105 | 254 | 45.13 | 6.7 % |
Finally, for a given error of 5 mm, the smaller the log, the greater the difference in volume will be.