Index for Wood Bending Shapes

DOI Web Site Web Site 1 References

Bibliographic Information

Other Title
  • 曲げ木加工の指標
  • マゲキ カコウ ノ シヒョウ

Search this article

Abstract

<p>In processing wood bending, there is a need to clarify the increasing failure phenomena in recent years. Knowledge of physical properties for selecting wood species and a shape standard showing the relationship between thickness (s) and bending radius (r) are required. In this study, wood samples immediately after steaming were subjected to bending tests using a wooden pressing frame. In addition, three-point bending and longitudinal tensile tests were made. In the press bending tests, many cracks were found on the tensile side of the samples. Therefore, the limit of fracture strain (εt(Max)) was calculated from the results of the longitudinal tensile tests. It is possible while bending to shift the neutral axis from the inside of the wood to the metal side by the bending band along the wood. It is necessary to satisfy the expression (s-t) / (r + t) < εt(Max), where t represents the distance from the upper wood surface to the neutral plane. In addition, it was confirmed that this relationship was satisfied under the conditions where good results were obtained in the press bending tests.</p>

Journal

  • Mokuzai Gakkaishi

    Mokuzai Gakkaishi 65 (4), 235-242, 2019-10-25

    The Japan Wood Research Society

References(1)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top