木材のめりこみ試験時の弾塑性表面変位形状の計測と全面横圧縮応力ひずみ関係を用いためりこみ荷重の予測

In this paper, the elastic-plastic displacement shape of the specimen surface during the experiment of compression perpendicular to the grain of the wood was measured using digital image correlation. And, it becomes possible to predict the transition of partial compressive load perpendicular to the grain, by using the stress-strain relation of allover compression perpendicular to the grain. This result is useful in making predictions for the partial compression perpendicular to the grain and the yield strength of wood joints.