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Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image

Table 5 Variations of wood density (WD), modulus of rupture (MOR), modulus of elasticity (MOE), and dynamic modulus of elasticity (Ed) within stem and between sites of Melia azedarach

From: Within-stem variations in mechanical properties of Melia azedarach planted in northern Vietnam

Variable Description n WD (g/cm3) MOR (MPa) MOE (GPa) Ed (GPa)
Radial direction (%) 10 60 0.44 ± 0.01c 54.64 ± 2.55c 7.81 ± 0.22c 9.15 ± 0.24c
50 60 0.52 ± 0.01b 82.18 ± 2.23b 9.55 ± 0.20b 11.20 ± 0.22b
90 60 0.57 ± 0.01a 98.94 ± 1.48a 10.41 ± 0.21a 12.45 ± 0.23a
Stem height (m) above the ground 7.3 36 0.51 ± 0.01a 77.58 ± 4.20a 9.71 ± 0.32a 11.25 ± 0.38a
5.3 36 0.49 ± 0.01a 74.70 ± 4.01a 8.87 ± 0.35a 10.76 ± 0.40a
3.3 36 0.51 ± 0.01a 78.78 ± 4.31a 9.52 ± 0.31a 11.25 ± 0.36a
1.3 36 0.50 ± 0.01a 81.28 ± 4.05a 9.36 ± 0.29a 10.86 ± 0.34a
0.3 36 0.52 ± 0.01a 80.57 ± 4.07a 8.84 ± 0.34a 10.55 ± 0.38a
Site 1 90 0.50 ± 0.01b 66.20 ± 2.55b 8.25 ± 0.19b 9.73 ± 0.21b
2 90 0.52 ± 0.01a 90.97 ± 1.90a 10.27 ± 0.16a 12.13 ± 0.18a
Mean   180 0.51 ± 0.01 78.58 ± 1.84 9.26 ± 0.15 10.93 ± 0.17
  1. Mean values are followed by standard errors
  2. n number of wood specimen
  3. a,b,cMeans with different superscript within a column significantly differ (p < 0.05)