Table 30.
Manufacturing characteristics of flakeboard (19 mm thickness) and anisotropy expressed by acoustic parameters [67]. Legend: Macroscopic aspect of the flake board (https://furniture.mu/wp-content/uploads/2018/08/oriental-strand-board-osb-500x500-1-300x300.jpg Accessed 4 April 2023).
| Flakeboard characteristics | Acoustic parameters | Anisotropy |
||
|---|---|---|---|---|
| Definition |
Values |
|||
| Minimum | Maximum | |||
| Flake alignment with ultrasonic velocity method – P waves | ||||
| Longitudinalvelocities | V11/V22 | 1.11 | 1.13 | |
| Surface velocity | Axis 1 / Axis 2 | 1.03 | 1.10 | |
| Acoustic invariants | I12/I13 | 1.32 | 1.46 | |
Skin damage with acoustic emission at 5 cm |
||||
| Peak amplitude | Reference signal | 1.04 | 1.08 | |
| Events duration ratio | Axis 1/Axis 2 | 1.18 | 0.80 | |
| Count number ratio | Axis 1/Axis 2 | 0.15 | 0.11 | |
| Energy ratio | Axis 1/Axis 2 | 1.72 | 1.68 | |
Interlaminar heterogeneity with shear waves velocity method |
||||
| Plane 12/Plane 13 | V66/V55 | 1.86 | 1.91 | |
| Plane 12/Plane 23 | V66/V44 | 1.87 | 1.99 | |
| Global board anisotropy | Acoustic invariants | I ratio global | 0.72 | 0.82 |
Macroscopic aspect of the flakeboard with the random alignment of flakes |
||||
 |
||||
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.