圧縮杉材における弾性係数と圧縮率の関係及びその評価法

概要

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Cedar-wood was compressed from radial direction of annual ring. And the volume of compressed cedar-wood becomes 70 percent volume from original one. Specimens that were sliced off compressed wood were used by way of measuring Young's moduli and Poisson's ratios. The relationship between these measurements and volume fraction of late wood applied to lamination theory. Elastic constants of early wood and late wood were calculated from this result. Using cedar-wood that has 50 percent compressibility, experiment was carried out. The Predictability of elastic constants was discussed by this result. About cedar-wood of either compressibility, deformations of early wood and late wood were observed by scanning electron microscope. The distribution of compressibility was proved by this observation.
拓殖大学の論文
2004-10-20