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| PDF : |  08020058.pdf |
| title(En) : | Shearing Modulus of Plywood and Hardboard Measured by the Panel Shear Test. III. Measuring of Shearing Modulus by the Improved LARSSON-WÄSTLUND Method |
| author(En) : | Motoaki Okuma |
| information : | Mokuzai Gakkaishi 8(2), 58-61 (1962) |
| assort : | Original Article |
| summary(En) : | In Sweden, the LARSSON-WÄSTLUND method (LW method) has been applied for the shear test of plywood and fiberboard. We described in this paper, procedures in which the LW method was improved to some extent and by which method the shearing moduli of plywood and hardboard were measured. Test specimen is shown in Fig. 1. The experimental arrangement was prepared as shown in Fig. 2 and 3. The results obtained are summarized as follows: 1) The load-strain curve obtained by this method is normal as shown in Fig. 4, in contrast to the curve by the ASTM method which is composed of two straight lines as reported in the previous paper. 2) The value of the shearing modulus by this method indicates less dispersion than the one by the ASTM method does. 3) The shearing modulus obtained is much smaller than that by the ASTM method. 4) The shearing modulus of plywood has some relation to the thickness of the board, that is, as the board becomes thinner, the value becomes larger. |