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Journal of Wood Science

Official Journal of the Japan Wood Research Society

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Effect of board density and layer structure on the mechanical properties of bamboo oriented strandboard

Journal of Wood Science volume 53, pages 510–515 (2007)Cite this article

Abstract

This study examined the effects of density and layer structure on the mechanical properties and dimensional stability of strandboard manufactured from moso bamboo (Phyllostachys pubescens). The strandboard was fabricated in a laboratory at five densities and three different structures including a randomly oriented homogenous board, a unidirectionally oriented homogenous board, and a three-layered board with a cross-oriented core layer (BOSB). Bamboo strand alignment distribution could be predicted using the von Mises distribution function. Bending properties increased with increasing density and were affected by layer structure. The modulus of rupture (MOR) of the threelayered board in the parallel direction increased remarkably compared with the random board MOR; in the perpendicular direction, it exhibited less strength reduction. Elastic properties of the three-layered board could be predicted using elastic constants of the unidirectional board. Internal bond strength (IB) was greatly affected by density, but the layer structure effect did not appear in IB. Linear expansion per unit moisture change ranged from 0.017 to 0.022 for random and three-layered boards; these values are comparable with or lower than values for commercial board.

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Authors and Affiliations

  1. Wood Science Laboratory, Faculty of Agriculture, Shizuoka University, 836 Ohya, Shizuoka, 422-8529, Japan

    Ihak Sumardi & Shigehiko Suzuki

  2. Shizuoka Prefecture Forestry and Forest Products Research Institute, Shizuoka, 430-0016, Japan

    Kazuhiro Ono

Authors
  1. Ihak Sumardi
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  2. Kazuhiro Ono
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  3. Shigehiko Suzuki
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Correspondence to Shigehiko Suzuki.

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Sumardi, I., Ono, K. & Suzuki, S. Effect of board density and layer structure on the mechanical properties of bamboo oriented strandboard. J Wood Sci 53, 510–515 (2007). https://doi.org/10.1007/s10086-007-0893-9

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