Official Journal of the Japan Wood Research Society
Table 5 Transversal stress wave velocities (V) of different decay-damaged iron-wood trees (N = 15)
From: Detection of decay damage in iron-wood living trees by nondestructive techniques
No. | Dia. of 2D (cm) | D × F (m Hz) | V (m/s) | ||
|---|---|---|---|---|---|
V max | V mean | V min | |||
4 | 42.8 | 155.6 | 2608 | 1994 | 1380 |
5 | 31.3 | 156.5 | 2271 | 1639 | 1007 |
8 | 30.6 | 92.1 | 2102 | 1416 | 731 |
10 | 55.0 | 154.8 | 2672 | 1714 | 757 |
13 | 34.4 | 213.3 | 2401 | 1902 | 1403 |
26 | 37.2 | 293.9 | 2505 | 2119 | 1734 |
28 | 39.5 | 158.2 | 2438 | 1911 | 1385 |
31 | 48.4 | 452.3 | 2536 | 1995 | 1455 |
32 | 30.1 | 191.1 | 2458 | 2000 | 1542 |
33 | 42.8 | 296.2 | 2883 | 2355 | 1827 |
34 | 50.4 | 331.1 | 2623 | 2147 | 1671 |
35 | 45.8 | 395.3 | 2830 | 2337 | 1845 |
37 | 41.5 | 315.4 | 2438 | 1744 | 1051 |
43 | 61.6 | 170.6 | 3086 | 2246 | 1406 |
46 | 42.0 | 277.2 | 2699 | 2282 | 1865 |
Average | 42.2 (9.1) | 243.6 (102.9) | 2570 (247) | 1987 (274) | 1404 (372) |