Journal of Wood Science | |
Bending properties of dimension lumber produced from Siberian larch (Larix sibirica) in Mongolia | |
Haruna Aiso-Sanada1  Bayasaa Tumenjargal2  Ikumi Nezu2  Yusuke Takahashi2  Shinso Yokota2  Futoshi Ishiguri2  Jyunichi Ohshima2  Ganbaatar Chultem3  Bayartsetseg Baasan3  | |
[1] Forestry and Forest Products Research Institute;School of Agriculture, Utsunomiya University;Training and Research Institute of Forestry and Wood Industry, Mongolian University of Science and Technology; | |
关键词: Larix sibirica; Modulus of elasticity; Modulus of rupture; 5% tolerance limit; Visual grading; Juvenile wood; | |
DOI : 10.1186/s10086-020-01863-6 | |
来源: DOAJ |
【 摘 要 】
Abstract The modulus of elasticity (MOE) and modulus of rupture (MOR) were evaluated for 190 pieces of dimension lumber (2 by 4 lumber, 38 by 89 mm in cross-section) produced from Larix sibirica trees grown in Mongolia. The 5% tolerance limits of the MOE and MOR were 5.70 GPa and 15.1 MPa, respectively. The value of the 5% tolerance limit of the MOR exceeded the characteristic value of 2 by 4 lumber in visual grading class No. 3 of the Japanese Agricultural Standard for the D. fir-L, Hem-Tam, JS-III and S-P-F softwood species groups. A significant positive correlation was found between the MOE and MOR, although air-dry density was weakly correlated with bending properties in L. sibirica.
【 授权许可】
Unknown