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Construction of novel measurement method of wood property by TOF-NIR densitometory

Research Project

Project/Area Number 22248020
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Wood science
Research InstitutionNagoya University

Principal Investigator

TSUCHIKAWA Satoru  名古屋大学, 大学院・生命農学研究科, 教授 (30227417)

Co-Investigator(Kenkyū-buntansha) YAMAMOTO Hiroyuki  名古屋大学, 大学院・生命農学研究科, 教授 (50210555)
OKADA Eiji  慶應義塾大学, 理工学部, 教授 (40221840)
FUJIMOTO Takaaki  鳥取大学, 農学部, 准教授 (40446331)
Co-Investigator(Renkei-kenkyūsha) YOSHIDA Masato  名古屋大学, 大学院・生命農学研究科, 准教授 (30242845)
IMAI Takanori  名古屋大学, 大学院・生命農学研究科, 准教授 (20252281)
Project Period (FY) 2010 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥26,780,000 (Direct Cost: ¥20,600,000、Indirect Cost: ¥6,180,000)
Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2010: ¥20,930,000 (Direct Cost: ¥16,100,000、Indirect Cost: ¥4,830,000)
Keywords分光分析 / 時間飛行 / 木材 / 材質評価 / 近赤外 / 非破壊計測 / 林学 / バイオマス / 農業工学 / 計測工学 / 応用光学・量子光工学 / 飛行時間
Research Abstract

A new optical measurement system, the main components of which are a streak camera and semiconductor laser , was introduced to clarify the optical characteristics of wood from the viewpoint of time-of-flight near infrared (TOF-NIR) spectroscopy. Another system, which is composed of LED NIR laser (CW type) and photodetector, was also constructed. Intensity of transmitted light varied with early wood and late wood, which was due to the difference of density. The density and cellular structure directly affected the transmitted time-resolved profile. Absorption and scattering coefficient of wood were calculated from the variation of time-resolved profile based on the forward and backward model of light transportation equations. It was known thatabsorption and scattering coefficient of wood were varied with the moisture condition of subsurface layer and inside of the sample. Multivariate statistics as the explanatory variables of time-resolved profile showed high accurate estimation of moisture content of wood compared to that of traditional NIR spectroscopy. The optical model based on the diffusion approximation to the radiative transfer equation proved to be useful for thick samples, which can be optically regarded as an ideal diffuser, although wood is a structural material with non-homogeneous cellularstructure.

Report

(4 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (18 results)

All 2013 2012 2011 Other

All Presentation (15 results) (of which Invited: 1 results) Remarks (3 results)

  • [Presentation] 近赤外レーザ光による木質材料の精密非破壊検査2013

    • Author(s)
      北村竜之介、小石川将士、土川覚
    • Organizer
      第28回近赤外フォーラム
    • Place of Presentation
      那覇
    • Related Report
      2012 Final Research Report
  • [Presentation] 近赤外 CW レーザ光による木質材料の物性評価-連続密度測定の可能性-2013

    • Author(s)
      北村竜之介、土川覚
    • Organizer
      第63回日本木材学会
    • Place of Presentation
      盛岡
    • Related Report
      2012 Final Research Report
  • [Presentation] 近赤外レーザ光による木質材料の精密非破壊検査2013

    • Author(s)
      北村竜之介、小石川将士、土川覚
    • Organizer
      第28回近赤外フォーラム
    • Place of Presentation
      那覇市
    • Related Report
      2012 Annual Research Report
  • [Presentation] 近赤外CW レーザ光による木質材料の物性評価-連続密度測定の可能性-2013

    • Author(s)
      北村竜之介、土川覚
    • Organizer
      第63回日本木材学会大会
    • Place of Presentation
      盛岡市
    • Related Report
      2012 Annual Research Report
  • [Presentation] Application of Time-of-Flight NIR Spectoscopy to Wood2013

    • Author(s)
      Satoru Tsuchikawa
    • Organizer
      International Conference on Advanced Vibrational Spectroscopy
    • Place of Presentation
      神戸
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] 近赤外レーザを用いた木材の物性評価(第一報)-密度測定の可能性-2012

    • Author(s)
      小石川将士、土川覚
    • Organizer
      第62回日本木材学会大会
    • Place of Presentation
      札幌市
    • Year and Date
      2012-03-16
    • Related Report
      2011 Annual Research Report
  • [Presentation] ピコ秒近赤外パルスレーザを用いた木材の材質測定(I)-樹種による時間プロフィルの違い-2012

    • Author(s)
      倉田洋平、土川覚
    • Organizer
      第62回日本木材学会大会
    • Place of Presentation
      札幌市
    • Year and Date
      2012-03-15
    • Related Report
      2011 Annual Research Report
  • [Presentation] ピコ秒近赤外パルスレーザを用いた木材の材質測定(I)-樹種による時間プロフィルの違い-2012

    • Author(s)
      倉田洋平、土川覚
    • Organizer
      第62回日本木材学会
    • Place of Presentation
      札幌
    • Related Report
      2012 Final Research Report
  • [Presentation] 近赤外レーザを用いた木材の物性評価(第一報)-密度測定の可能性-2012

    • Author(s)
      小石川将士、土川覚
    • Organizer
      第62回日本木材学会
    • Place of Presentation
      札幌
    • Related Report
      2012 Final Research Report
  • [Presentation] 近赤外レーザを用いた木材の物性評価2011

    • Author(s)
      小石川将士、土川覚
    • Organizer
      第27回近赤外フォーラム
    • Place of Presentation
      つくば市
    • Year and Date
      2011-11-11
    • Related Report
      2011 Annual Research Report
  • [Presentation] ピコ秒近赤外パルスレーザを用いた木材の材質測定2011

    • Author(s)
      倉田洋平、土川覚
    • Organizer
      第27回近赤外フォーラム
    • Place of Presentation
      つくば市
    • Year and Date
      2011-11-10
    • Related Report
      2011 Annual Research Report
  • [Presentation] ピコ秒パルスレーザを用いた木材の材質測定2011

    • Author(s)
      倉田洋平、小石川将士、土川覚
    • Organizer
      第61回日本木材学会
    • Place of Presentation
      京都
    • Related Report
      2012 Final Research Report
  • [Presentation] 近赤外レーザを用いた木材の物性評価2011

    • Author(s)
      小石川将士、土川覚
    • Organizer
      第27回近赤外フォーラム
    • Place of Presentation
      つくば
    • Related Report
      2012 Final Research Report
  • [Presentation] ピコ秒近赤外パルスレーザを用いた木材の材質測定2011

    • Author(s)
      倉田洋平、土川覚
    • Organizer
      第27回近赤外フォーラム
    • Place of Presentation
      つくば
    • Related Report
      2012 Final Research Report
  • [Presentation] ピコ秒パルスレーザを用いた木材の材質測定2011

    • Author(s)
      倉田洋平、小石川将士、土川覚
    • Organizer
      第61回日本木材学会
    • Place of Presentation
      京都大学
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://www.agr.nagoya-u.ac.jp/~mechbio/

    • Related Report
      2012 Final Research Report
  • [Remarks] 近赤外レーザ光を用いた新たなデンシトメータの開発

    • URL

      http://www.agr.nagoya-u.ac.jp/~mechbio/index.htm

    • Related Report
      2012 Annual Research Report
  • [Remarks]

    • URL

      http://www.agr.nagoya-u.ac.jp/~mechbio/

    • Related Report
      2011 Annual Research Report

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Published: 2010-08-23   Modified: 2019-07-29  

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