Article Figures & Data
Figures
- Figure 1.
Typical stress-strain curve for wood.
- Figure 2.
Miniboard in a Universal Testing Machine supported at both ends and loaded in the center of a 35.6 cm span at the point of rupture.
Tables
- Table 1.
Effect of height in the trunk on modulus of elasticity (MOE) and modulus of rupture (MOR) of miniboards taken from untreated yellow poplar trees.
Height above ground (cm) MOE (x 106 psi) MOR (psi) 0-60 0.86 a* 7,268 a 75-135 0.96 b 7,016 ab 135-195 0.95 b 6,764 b ↵* Values in columns followed by the same letter are not significantly different at 5%.
- Table 2.
Effect of height in the trunk on modulus of elasticity (MOE) and modulus of rupture (MOR) of nondiscolored miniboards taken from trunk injected yellow poplar trees.
Height above ground (cm) MOE (x 106 psi) MOR (psi) 0-60 0.79 a* 7,061 a 75-135 0.87 b 6,887 a 135-195 0.86 b 6,534 a ↵* Values in columns followed by the same letter are not significantly different at 5%.
- Table 3.
Modulus of elasticity (MOE) and modulus of rupture (MOR) of miniboards containing discolored wood taken from yellow poplar trunks injected with Cutless and Clipper.
Injection treatment MOE (x 106 psi) MOR (psi) Cutless 0.81 a* 6,148 a Clipper 0.80 a 6,467 a ↵* Values in columns followed by the same letter are not significantly different at 5%.
- Table 4.
Effect of height in the trunk on modulus of elasticity (MOE) and modulus of rupture (MOR) of miniboards containing discolored wood taken from yellow poplar trunk injected with Cutless and Clipper.
Height above ground (cm) MOE (x 106 psi) MOR (psi) 0-60 0.73 a* 6,429 a 75-135 0.86 b 6,217 a 135-195 0.82 b 6,263 a ↵* Values in columns followed by the same letter are not significantly different at 5%.
- Table 5.
Modulus of elasticity (MOE) and modulus of rupture (MOR) of miniboards from untreated yellow poplar trees, nondiscolored wood from growth regulatortreated trees, and discolored wood from growth regulator treated trees.
Miniboard type MOE (x 106 psi) MOR (psi) Untreated 0.92 a* 7,016 a Nondiscolored/Treated 0.84 a 6,851 a Discolored/Treated 0.80 a 6,307 a ↵* Values in columns followed by the same letter are not significantly different at 5%.
- Table 6.
Modulus of elasticity (MOE) and modulus of rupture (MOR) of miniboards cut from blue gum containing nondiscolored wood and wood discolored by trunk injection with Atrinal.
Miniboard type MOE (x 106 psi) MOR (psi) Nondiscolored wood 0.63 a* 6,142 a Discolored wood 0.56 a 5,807 a ↵* Values in columns followed by the same letter are not significantly different at 5%.
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