合板の強度的異方性について

概要

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The calculation formulae relating the stress in bending of the laminated wood-beam were checked by tests and verified their appricability to the plywood. The anisotropic properties of strength of the plywood can be represented by the ratios of A_E=E_<90>/E_0, B_E=E_<B90>/E<B0> and N_R=R_<90>/R_0 where E_0, E_<B0> and R_0 denote respectively the elastic moduli in edgewise tension or compression, the elastic moduli in bending and modulus of rupture in bending of plywood parallel to the face grain, and E_<90>, E_<B90> and R_<90> denote those values of plywood perpendicular to the face grain. These values in the cases of 3-ply , 5-ply and 7-ply plywood of LAUAN which are constructed from single species and have symmetrical construction to their core are evaluated by the computed results using the basic strength of veneer, and the anisotropic properties of them are discussed.
社団法人日本材料学会の論文
1963-10-15