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2003 Fiscal Year Final Research Report Summary

Surface-checking occurring conditions in air-drying off softwood lumber for construction use.

Research Project

Project/Area Number 12660145
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 林産学
Research InstitutionThe University of Tokyo

Principal Investigator

SHIDA Satoshi  The University of Tokyo, Graduate of Agricultural and Life Sciences, Associate Professor, 大学院・農学生命科学研究科, 助教授 (00201541)

Project Period (FY) 2000 – 2003
Keywordsair drying / sugi / surface checking / drying condition / drying stress / hemlock / wood drying / column
Research Abstract

This year is the final year for this research. The final research report was published in the form of a booklet. Research results for this year were described as below by referencing the research items 1, 2 and 3 in this year's application of execution.
1.Relation between surface-checking and tension strength perpendicular to grain of wood Drying stress was measured by strain gauges along with the width direction of board, which sizes are 10cm in width, 5cm in thickness, and 35cm in length, respectively and the drying stress distribution was found in the width direction as the result. Tension stress was also found in the fiat main dried-board. The board with semi-straight grain has the possibility to occur the compressive stress caused by absorption of moisture besides the tension stress which is the reason of surface checking. However this phenomenon is not clear. So it needs the more correct examination.
2.Examination of surface-checking under 0℃ drying condition.
This examination could not be accomplished. This remains for the future research.
3.Relations between the climate in Japan and surface-checking of lumber
The paper named "Surface checking in air-drying of boxed-heart softwood in Japan" was submitted to Forest. Products Journal, which is an International Journal for Wood Sciences, and is in print.
Future subject : Effect of temperature under 0 ℃ and wind velocity on the surface checking remained as the future subject.

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Satoshi Shida, Taiga Ikeda, Stavros Avramidis: "Surface checking in air-drying of boxed-heart soft wood in Japan"Forest Products Journal. (In press). (2004)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 渡辺憲, 信田聡: "スギウッドデッキの割れと年輪との関係"日本木材加工技術協会第21回年次大会(東京)講演要旨集. 100-101 (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 池田大河, 信田聡, 有馬孝禮: "建築用針葉樹柱材の天然乾燥における表面割れ発生の条件"第53回日本木材学会大会(福岡)研究発表要旨集. (CD-ROM). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 信田 聡: "天然乾燥想定条件によるヘムロック柱材の乾燥時の表面割れと水分傾斜"第53回日本木材学会大会(福岡)研究発表要旨集. (CD-ROM). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 斎藤周逸, 吉田孝久, 河崎弥生, 信田聡, 西村勝美: "木造住宅の構造材に現れた含水率分布"木材工業. 57・10. 438-443 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 蛯原啓文, 信田聡, 有馬孝禮, 今井優人: "スギ材木の天然乾燥における表面割れの観察"第51回日本木材学会大会(東京)研究発表要旨集. 125-125 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 吉本昌朗, 信田 聡: "トドマツ水食い材の観察と強度"東京大学農学部演習林報告. 106. 91-139 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 信田 聡: "住宅の室内環境と木材寸法・含水率"木の建築(創刊号). 1. 40-46 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Satoshi Shida, Taiga Ikeda, Stavros Avramidis: "Surface checking in air-drying of boxed heartt soft wood in Japan."Forest Products Journal. (in Print). (2004)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Ken Watonabe, Satoshi Shida: "between surface Relationship checking and the orientation of annual rings for sugi lumber."Proceedings of The 21^<st> annual meeting (Tokyo)of Wood Technological Association of Japan. 100-101 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Taiga Ikeda, Satoshi Shida, Takanori Arima: "the occurring conditions of surface checking in air-drying of soft wood lumber."Proceedings of The 53^<rd> annual meeting of Japan Wood Research Society. (CD-ROM). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Satoshi Shida: "Surface checking and moisture gradients of hemlock column on drying by the assuming air-drying schedules."Proceedings of The 53^<rd> annual meeting of Japan Wood Research Society. (CD-ROM). (2003)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shuitu Saito, Takahisa Ybshida, Yayoi Kawasaki, Satoshi Shida, Katsumi Nishimura: "Moisture distribution in structural members of wooden houses."Wood Industry. Vol.57, No.10. 438-443 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yoshifumi Ebihara, Satoshi Shida, Takanori Anima: "Studies on surface checking of Sugi (Criptonjer a japonica) boxed heart squares sawn timber on air drying."Proceedings of The 51st annual meeting of Japan Wood Research Society. 125-125 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masaaki Yoshimoto, Satoshi Shida: "Observation and mechanical properties of wetwood in Todomatsu (Abies Sachlinensrs Mast.)"Bulletin of The Tokyo University Forests. No.106. 91-139 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Satoshi Shida: "Indoor climate of houses and the dimensional stability and moisture content of lumber in the rooms."KI NO KENTIKU (Wooden Archtecture). No.1. 40-46 (2001)

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

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Published: 2005-04-19  

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