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Longitudinal Change of Dynamic Modulus of Elasticity and Quality Evaluation by a Non-destructive Method in Todomatsu（Abies sachalinensis）Plus Trees
todomatsu stress wave velocity standing tree dynamic modulus of elasticity
2009/3/6
Longitudinal changes of dynamic modulus of elasticity values (Efr) of logs for todomatsu (Abies sachalinensis) were investigated to clarify the best vertical region of the stem (height from ground lev...
Effect of Longitudinal Shear Plane Length on the Tensile Strength of Half-Lapped “gooseneck” Splice Joints（Kama-tsugi）
kama-tsugi shear plane length tensile strength strain distribution analysis
2009/3/6
Strain distribution analysis of half-lapped “gooseneck” splice joints (Kama-tsugi) was carried out using digital image correlation. The effect of the shear plane length on the tensile strength of the...
Longitudinal Changes of Basic Density and Non-Destructive Quality Evaluation Using the Pilodyn in Todomatsu（Abies sachalinensis）Plus Tree Clones
todomatsu clone longitudinal change basic density Pilodyn penetration
2009/3/4
The longitudinal changes in the basic density of disks (mean Bd) of todomatsu (Abies sachalinensis) were investigated using plus-tree clones and breeding-material clones. The relationship between Pilo...