Official Journal of the Japan Wood Research Society
Table 4 Transversal stress wave velocities (V) of undamaged iron-wood trees (N = 34)
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 | |||
1 | 24.2 | 317.9 | 2421 | 1820 | 1219 |
2 | 22.0 | 206.0 | 2015 | 1688 | 1361 |
3 | 36.0 | 451.8 | 2045 | 1687 | 1330 |
6 | 41.0 | 443.2 | 2109 | 1737 | 1365 |
7 | 48.6 | 402.7 | 2558 | 2198 | 1839 |
9 | 41.0 | 443.2 | 2565 | 2113 | 1662 |
11 | 60.6 | 360.6 | 3205 | 2571 | 1937 |
12 | 41.5 | 351.1 | 2614 | 2193 | 1773 |
14 | 29.5 | 292.1 | 2298 | 1914 | 1531 |
15 | 26.2 | 241.4 | 2221 | 1809 | 1398 |
16 | 37.7 | 324.4 | 2523 | 2140 | 1757 |
17 | 40.2 | 361.8 | 2656 | 2214 | 1772 |
18 | 33.1 | 261.0 | 2495 | 2006 | 1517 |
19 | 33.4 | 223.1 | 2574 | 2027 | 1481 |
20 | 31.6 | 230.4 | 2438 | 2022 | 1607 |
21 | 27.5 | 215.9 | 2231 | 1821 | 1412 |
22 | 29.3 | 278.6 | 2239 | 1864 | 1490 |
23 | 30.6 | 255.7 | 2216 | 1899 | 1583 |
24 | 25.2 | 216.7 | 2098 | 1791 | 1485 |
25 | 39.3 | 388.3 | 2510 | 2125 | 1741 |
27 | 61.1 | 405.1 | 2695 | 2353 | 2012 |
29 | 50.9 | 507.0 | 3028 | 2490 | 1952 |
30 | 48.4 | 457.4 | 2910 | 2190 | 1471 |
36 | 44.1 | 510.0 | 2888 | 2399 | 1911 |
38 | 43.5 | 413.3 | 2914 | 2280 | 1646 |
39 | 49.7 | 482.6 | 2971 | 2430 | 1890 |
40 | 40.0 | 384.8 | 2936 | 2226 | 1516 |
41 | 21.4 | 164.5 | 2028 | 1672 | 1316 |
42 | 40.7 | 420.4 | 2392 | 2033 | 1675 |
44 | 45.8 | 510.0 | 2830 | 2358 | 1886 |
45 | 54.2 | 558.3 | 3299 | 2635 | 1971 |
47 | 37.2 | 381.3 | 2765 | 2271 | 1778 |
48 | 42.3 | 442.9 | 2497 | 2137 | 1778 |
49 | 29.0 | 267.8 | 2144 | 1845 | 1547 |
Average | 39.2 (9.5) | 358.0 (105.6) | 2539 (348) | 2087 (265) | 1636 (218) |