Abstract
The goal of this study is to evaluate the orthotropic properties of four different wood species. Off-axis tension tests with digital image correlation were used to evaluate the orthotropic properties of Larix kaempferi, Pinus densiflora, Pinus koraiensis, and Cryptomeria japonica. The highest elastic modulus EL of 11.70GPa was found from Larix kaempferi, whereas the lowest elastic modulus ER of 0.12GPa was observed from Cryptomeria japonica. The highest shear modulus GLT of 2.68GPa was found from Larix kaempferi and the lowest shear modulus GLR of 0.32GPa was observed from Cryptomeria japonica. While the shear modulus values in the LT plane from the four species were higher, the shear strength values in the LR plane were higher than those in the LR plane. Poisson’s ratios from the four species were found that νRT and νTR were higher than νLR and νLT. Although mixed failure behaviors were found from the four species, the failure behaviors were dominantly influenced by the orientation of the specimens.
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