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Development of On-Line Quality Control System for Wood-Based Materials Utilizing Ae and Tdr Methods

Research Project

Project/Area Number 01860019
Research Category

Grant-in-Aid for Developmental Scientific Research (B).

Allocation TypeSingle-year Grants
Research Field 林産学
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

FUSHITANI Masami  Tokyo University of Agriculture and Technology, Faculty of Agriculture, Professor, 農学部, 教授 (80014950)

Co-Investigator(Kenkyū-buntansha) KAMIYA Fumio  Forestry and Forest Products Research Institute, Head of Laboratory, 木材利用部・構造性能研究室, 室長
OKABE Toshihiro  Aomori Prefectural Industaial Research Institure. Researcher, 研究員
NAKAMURA Noboru  The Uiversity of Tokyo, Faculty of Agriculture, Assistant Professor, 農学部, 助手 (30180384)
SATO Keiichi  Tokyo University of Agriculture and Technology, Faculty of Agriculture, Assistan, 農学部, 助手 (90178723)
内田 建治  ミサワホーム株式会社, 生産部木質生産課, 主事
安藤 直人  株式会社ミサワ総合研究所, ファニチャー開発室, 室長
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1990: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1989: ¥3,800,000 (Direct Cost: ¥3,800,000)
KeywordsWood / Wood-Based Material / Quality control / Lumber / NDT / AE / TDR / Stress Grading / ストレスグレ-ディング / グレ-ディング / アコ-スティック・エミッション / 木材含水率
Research Abstract

The aim of this research is development of on-line quality control systems in forest products factories in order to elevate the reliability of construction parts and materials for timber engineering. Methods of the proof testing of materials of woody panel, such as lumber and plywood, and wood adhesive were investigated, specially, grading of lumber by using acoustic emission (AE), nonーdestructive testing of plywood and wood adhesive and measurement of moisture content by using time domain reflectometry method. These trial machines were produced and tested, and the practical usefulness of the Methods were estimated.
1. The AE grading using an AE wheeled sensor could detect and evaluate strength-reducing lumber defects such as knots and closs grain, and it is more reliable than the current visual grading system based on knot ratio. The AE grading could also detect rots and checks. Therefore, reliable AE lumber stress grading can be realized by using AE to detect defects in lumber in conjunction with the more traditional MOE classification. 2. Two types of AE testing machines were produced for the purpose of inspecting defects in plywood boards (900x100mm) and floor boards. Delamination in the boards could be detected and evaluated by the machines. 3. Wood moisture content measuring system based on TDR method was developed. It is including hardware (a computer, a generator and a wave memory) and software (a control program and a wave form analysis program).

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] K.Sato: "Lumber Stress Grading utilizing the Acoustic Emission Technique" Journal of Acoustic Emission. 9. 209-213 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 〓煕燮.: "バットジョイントを持つ積層材の曲げ強度性能とアコ-スティック・エミッション特性" 日本木材学会誌. 36. 944-951 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 佐藤 敬一: "木材接着試験へのアコ-スティック・エミッションの適用ーAEの平行型及び直交型引張せん断接着試験への応用" 東京農工大学農学部演習林報告. 28. 23-29 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M.Ishibashi: "Acoustic Emission Inspecting of Poor Bouding in Production Line of Plysood Factory" Progress in Acoustic Emission. V. 174-180 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] H.Takeuchi: "Application of Acoustic Emission to Stress Grading of TimberIIIーEvaluation Using MOE and AEー" Progress in Acoustic Emission. V. 160-166 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 佐藤 敬一: "合板のAE非破壊試験機の開発ーAEによる合板の接着不良の検出ー" 木材工業. 44. 214-218 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 岡部 敏弘: "青森ヒバの不思議" 青森ヒバ研究会, 245 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Sato: "Lumber Stress Grading Utilizing the Acoustic Emission Technique" Journal of Acoustic Emission. 9. 209-213 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] H. Byeon: "Bending Strength Properties and Acoustic Emissions of Laminated Wood Having Butt joints" Mokuzai Gakkaishi. 36. 944-951 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. sato: "Bulletin of the Experiment Forests Tokyo University of Agriculture and Technology" 28. 23-29. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] M. Ishibashi: "Acoustic Emission Inspecting of Poor Bonding in Production Line of Plywood Factory" Progress in Acoustic Emission. V. 174-180. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] H. Takeuchi: "Application of Acoustic Emission to Stress grading of Timber III - Evaluation Using MOE and AE-" Progress in Acoustic Emission. V. 160-166. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Sato: "Development of AE Nondestructive Testing Machine for Plywood - Detection of Poor Bond in Plywood utilizing Acoustic Emission Technique-" Mokuzai Kogyo. 44. 214-218. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Okabe: "Aomori Hiba Kenkyukai" Aomori Hiba no Hushigi. 245. (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K.Sato,H.Takeuchi,K.Yamaguchi,N.Ando,M.Fushitani: "Lumber Stress Grading utilizing the Acoustic Emission Techniqne" Journal of Acoustic Emission. 9. 209-213 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 卞 煕燮、伏谷 賢美、佐藤 敬一: "バットジョイントを持つ積層材の曲げ強度性能とアコ-ステック・エミッション特性" 日本木材学会誌. 36. 944-951 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 佐藤 敬一、森 潤、伏谷 賢美: "木材接着試験へのアコ-スティック・エミッションの適用ーAEの平行型及び直交型引張せん断接着試験への応用" 東京農工大学農学部演習林報告. 28. 23-29 (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] M.Ishibashi,K.Sato,M.Fushitani: "Acoustic Emission Inspecting of Poor Bouding in Production Line of Plycood Factory" Progress in Acoustic Emission. V. 174-180 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] H.Takeuchi,K.Sato,K.Yamaguchi,N.Ando,M.Fushitani: "Application of Acoustic Emission to Stress Grading of Timber IIIーEvaluation Using MOE and AEー" Progress in Acoustic Emission. V. 160-166 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 佐藤 敬一、山口 勝也、安藤 直人、伏谷 賢美: "合板のAE非破壊試験機の開発ーAEによる合板の接着不良の検出ー" 木材工業. 44. 214-218 (1989)

    • Related Report
      1990 Annual Research Report
  • [Publications] 岡部 敏弘、斎藤 幸司、大友 良光、工藤 幸夫編集: "青森ヒバの不思議" 青森ヒバ研究会, 245 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 佐藤敬一: "合板のAE非破壊試験機の開発ーAEによる合板の接着不良の検出ー" 木材工業. 44(5). 14-18 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Sato,K.: "Detection of Poor Bond in Plywood Utilizing Acoustic Emission Technique" Proc.of 12th World Conference on Nondestructive Testing,Amsterdam. 1627-1629 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 佐藤敬一: "AEによる合板の非破壊試験機の開発" 第7回アコ-スティック・エミッション総合コンファレンス論文集. 89-94 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 竹内玄: "木材のストレスグレ-ディングへの応用(第2報)ー節、目切れの検出ー" 第7回アコ-スティック・エミッション総合コンファレンス論文集. 95-99 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Sato,K.: "Lumber Stress Grading Utilizing Acoustic Emission Technique" Journal of Acoustic Emission.

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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