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1990 Fiscal Year Final Research Report Summary

Analysis of Anisotropic Periodicity on Cell Arrangement and Microfibrillar Orientation by Several Diffraction Methods

Research Project

Project/Area Number 01480076
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 林産学
Research InstitutionKyoto University

Principal Investigator

FUJITA Minoru  Kyoto University, Agriculture, Associate Professor, 農学部, 助教授 (60026599)

Co-Investigator(Kenkyū-buntansha) NORIMOTO Misato  Kyoto University, Wood Research Institute, Professor, 木材研究所, 教授 (20027163)
SAIKI Hiroshi  Kyoto University, Agriculture, Professor, 農学部, 教授 (40026498)
Project Period (FY) 1989 – 1990
KeywordsX-ray diffraction / Electron diffraction / Laser diffraction / Anisotropy of wood morphology / Fourier transform / Microfibrillar orientation / Autocorrelation function / Morphological model of wood cells
Research Abstract

Anisotropic wood morphologies were analyzed by the X-ray, electron and laser diffractions (OFT) in the aspect of the Fourier transform having developed mathematical processes. Wood morphologies were divided into three oders : cell wall level; cell level ; tissue level. Microfibrillar angle among the structures of cell wall level is very important in the wood mechanics and were evaluated by the X-ray diffraction and the electron diffraction. In the former case, the mean value of the angle on many cell walls could be measured on the pressed wood specimens being operated by a new technique. The angle on the small area were surveyed in the latter case. Anisotropic microfibrillar distribution were estimated by the both methods.
Anisotropy on the both cell and tissue levels were analyzed by the OFT and also FFT having similar ability to the OFT. On the transverse sections of soft woods, cell wall thickness, cell shapes, cell arrangements could be evaluated quantitatively, and even the fluctuation on these morphological elements were traced. The typical structure of cells was reconstructed using these values. The tissue level anisotropy was examined on the transition from the early wood to the late wood in softwoods, between vessels and fibers in hard woods and on the distribution of rays.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 畑 茂樹: "木材の周期構造解析II.放射組織配列の二次元的解析" 材料. 38. 737-739 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 前川 知之: "木材の周期構造解析III. 針葉樹横断面における 仮道管の2次元的配置の評価" 京大演習林報告. 62. 275-281 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 畑 茂樹: "圧締試片のX線回折法と剥離切片偏光法によるフィブリル傾角の評価" 第40回本木材学会大会要旨集. 40. 218 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 前川 知之: "木材の細胞配列の解析ー極座標によるパワ-スペクトルパタ-ンの評価" 第41回日本木材学会大学(1991.4). 41. (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤田 稔: "木材横断面における細胞の形状と配列の自己相関パタ-ンによる特徴抽出" 第41回日本木材学会大会(1991.4). 41. (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤田 稔: "フ-リエ変換画像処理による細胞壁厚さの計測" 第41回日本木材学会大会(1991.4). 41. (1991)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hata: "Periodical analysis of wood structure II Two-dimensional arrangement of rays" Zairyou. Vol. 38(430). 733-739 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Maekawa: "Periodical analysis of wood structure III Evaluation of two-dimensional arrangements of softwood tracheids on transverse sections" Bull. Kyoto Univ. Forests. No. 62. 275-281 (1990)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-08-12  

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