OHTA MASAMITSU 太田正光

… Alternative Names

OHTA Masamitsu 太田正光

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Researcher Number	20126006
Other IDs
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Affiliation (based on the past Project Information) *help	2017: 東京大学, 大学院・農学生命科学研究科, 名誉教授 2014: 東京大学, 大学院農学生命科学研究科, 教授 2012: 東京大学, 農学生命科学研究科, 教授 2009 – 2012: The University of Tokyo, 大学院・農学生命科学研究科, 教授 2006: Graduate School of Agricultural and Life Sciences, Professor, 大学院農学生命科学研究科, 教授 … More 2001 – 2005: 東京大学, 大学院・農学生命科学研究科, 教授 2004: 東京大学, 大学院・農学生命科学研究所, 教授 1997 – 1999: 東京大学, 大学院・農学生命科学研究科, 教授 1996: 東京大学, 大学院・農学生命科学研究科, 助教授 1987 – 1995: 東京大学, 農学部, 助教授 Less
Review Section/Research Field	Principal Investigator 林産学 / Wood science / 林産科学・木質工学 Except Principal Investigator 林産学 / Wood science / 林産科学・木質工学 / Wood science
Keywords	Principal Investigator シミュレーション / 木質構造体 / 木材切削 / 破壊形態 / wood cutting / 破壊過程 / collapsing process / 超音波顕微鏡 / 異方性弾性定数 / 音速 … More / 縦波伝播速度 / レーリー波 / ミクロフィブリル傾角 / 木材細胞壁 / 強度・木質構造 / 木材腐朽 / 強度低下 / 崩壊 / X線デンシトメトリー / 腐朽進行シミュレーション / 腐朽進行モデル / Ｘ線CTスキャナー / 密度減少 / 腐朽異方性 / 水分移動速度 / 腐朽 / X線CTスキャナー / 収縮 / 衝撃まげ破壊 / 目切れ / スリット状欠陥 / クラック伝播 / 高速切削 / 高速度ビデオ / みかけの剛性 / 衝撃破壊 / き裂 / 応力波 / 低速切削 / high-speed cutting / high-speed video camera / fracture type / apparent stiffness / impact fracture / crack / stress wave / 個別要素法 / き裂の進展 / 異方性 / Distinct Element Method / fracture process / crack propagation / anisotropy / simulation / 動的負荷 / 接合部 / 改良個別要素法 / 3次元シミュレーション / 倒壊プロセス / 模型実験 / 3次元シュミレーション / 筋交い / 非対称構造 / 枠構造 / 非連続体解析 / 衝撃試験 / dynamic loading / wooden frame structure / metal-fastened joint / fracture aspect / Modified Distinct Element Method / Three-dimensional simulation / model used experiment / 薄板 / ビス止め構造 / 湾曲重ね板構造 / シェル構造 / 幾何学的非線形性 / 有限要素法 / ニュートン・ラプソン法 / 変形挙動 / 大変形 / thin wood board / screwed planks / curved stacked plank structure / shell structure / geometrical non-linearity / finite elements method / Newton-Lapson's method / 木造軸組住宅 / 地震 / 倒壊過程 / 通し柱 / ほぞ穴 / 断面欠損 / 高速負荷 / 拡張個別要素法 / 塑性挙動 / 木造住宅 / 荷重速度 / wooden frame house / earthquake / continuous column / tenon opening / lack of cross-sectional area / high speed loading / extended distinct element method / くさび型刃型 / 割裂 / 応力場 / 部分圧縮 / 弾塑性解析 / くさび型刃物 / 繊維走向 / 直交異方性 / 拘束応力 / 割れ / Wedge-shaped knife / Splitting / Stress field / Partial compression / Elasto-plastic analysis … More Except Principal Investigator 破壊力学 / 木材 / 評価法 / 中密度繊維板 / 非対称4点曲げ試験 / 実験的評価 / 弾性特性 / 破壊力学特性 / 力学特性評価 / 破壊力学特性値 / 特性評価法 / ENF試験 / DCB試験 / SENB試験 / CT試験 / SENT試験 / テーパ付試験体 / 開口モード / 木質系複合材料 / 強度特性 / 木材素材 / 合板 / 紙 / 振動特性 / 静的曲げ特性 / せん断特性 / 破壊基準 / 信頼性設計 / 有限小領域破壊理論 / ボルト接合 / 画像相関法 / 集成材 / RBD / クライテリオン / 有限要素法 / アコースティック・エミッション / アコースティックエミッション / fracture mechanics / fracture criterion / reliability based design / finite area fracture theory / bolted joint / image correlation method / wood / laminated lumber / 圧縮成形木材 / 弾性的性質 / 強度的性質 / 複合応力 / 圧縮率 / スプルース / ヤング率 / ポアソン比 / せん断弾性係数 / 曲げ強さ / せん断強さ / 半径方向 / 接線方向 / 3点曲げ試験 / スパン / はりせい比 / ひずみゲージ / 試験法 / 標準化 / 曲げ試験 / ねじり試験 / 弾性定数 / 非線形開始点 / 強度 / compressed wood / characterization / elastic properties / strength properties / complex stress field / compression ratio / spruce / LVL / 構造接合 / 釘 / ボルト / 破壊 / Laminated Veneer Lumber / Nail Joints / Bolted Joints / Fracture of Joints / セルロ-ス結晶 / 電子線回折 / X線回折 / バロニア / ラミ- / マ-セル化 / 磁力線 / 結晶変態 / セルロ-ス / 結晶構造 / 木材セルロ-ス / バクテリアセルロ-ス / バロニアセルロ-ス / 磁場 / ホヤ / 電子顕微鏡 / 単結晶 / セルロースII / セルロース誘導体 / cellulose crystal / electron diffraction / X-ray diffraction / Valonia / ramie / mercerization / magnetic field / polymorphism / 構造用木質材料 / 木質材料 / 半経験則 / 特性評価 / 構造用材料 / 構造用木質系複合材料 / 応力－ひずみ特性 Less

Analysis and experimental characterization of the fracture mechanics properties of structural wood-based materials
- Principal Investigator
  
  Yoshihara Hiroshi
- Project Period (FY)
  2015 – 2017
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Wood science
- Research Institution
  Shimane University
Experimental characterization of wood-based composite materials and establishment of the novel characterization methods
- Principal Investigator
  
  YOSHIHARA Hiroshi
- Project Period (FY)
  2012 – 2014
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Wood science
- Research Institution
  Shimane University
Development of a modeling method for the strength decreases and collapse process of wooden structures by the decay in progressPrincipal Investigator
- Principal Investigator
  
  OHTA Masamitsu
- Project Period (FY)
  2009 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  Wood science
- Research Institution
  The University of Tokyo
Examination of the source of differences among the fracture mechanics properties of wood and wood-based materials obtained by different methods and establishment of the novel characterization methods
- Principal Investigator
  
  YOSHIHARA Hiroshi
- Project Period (FY)
  2009 – 2011
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Wood science
- Research Institution
  Shimane University
Method establishment for the fracturing/collapsing process simulation of wooden houses under seismic loadingPrincipal Investigator
- Principal Investigator
  
  OHTA Masamitsu
- Project Period (FY)
  2004 – 2006
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  林産科学・木質工学
- Research Institution
  The University of Tokyo
Establishment of characterization methods of compressed wood and analyses of its deformation and failure behaviors
- Principal Investigator
  
  YOSHIHARA Hiroshi
- Project Period (FY)
  2003 – 2005
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  林産科学・木質工学
- Research Institution
  Shimane University
Basic study on the strength estimation of curved stacked plank structures with screw fixationPrincipal Investigator
- Principal Investigator
  
  OHTA Masamitsu
- Project Period (FY)
  2001 – 2002
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  林産学
- Research Institution
  UNIVERSITY OF TOKYO
Analysis of the fracture process of wooden frame structure under seismic loading by modified distinct-element method.Principal Investigator
- Principal Investigator
  
  OHTA Masamitsu
- Project Period (FY)
  1997 – 1999
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  林産学
- Research Institution
  The University of Tokyo
超音波顕微鏡による木材細胞壁の異方性弾性定数の測定ならびに音響的性質の検討Principal Investigator
- Principal Investigator
  
  太田正光
- Project Period (FY)
  1996
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  林産学
- Research Institution
  The University of Tokyo
Establshment of theory on fracture of wood and its application to RBD (Reliability Based Design)
- Principal Investigator
  
  MASUDA Minoru
- Project Period (FY)
  1994 – 1995
- Research Category
  
  Grant-in-Aid for Co-operative Research (A)
- Research Field
  
  林産学
- Research Institution
  KYOTO UNIVERSITY
Analysis of the fracture process of wood by Modified Distinct Element Method.Principal Investigator
- Principal Investigator
  
  OHTA Masamitsu
- Project Period (FY)
  1994 – 1995
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  林産学
- Research Institution
  The University of Tokyo
Analysis of Wood-cutting Mechanism by Impact Fracture TheoryPrincipal Investigator
- Principal Investigator
  
  OHTA Masamitsu
- Project Period (FY)
  1992 – 1993
- Research Category
  
  Grant-in-Aid for General Scientific Research (B)
- Research Field
  
  林産学
- Research Institution
  The University of Tokyo
Structural analysis of native cellulose and its derivatives by direct imaging of molecular chains
- Principal Investigator
  
  OKANO Takeshi
- Project Period (FY)
  1988 – 1991
- Research Category
  
  Grant-in-Aid for General Scientific Research (A)
- Research Field
  
  林産学
- Research Institution
  The University of Tokyo
Splitting type wood cutting with wedge-shaped knife by stress field control.Principal Investigator
- Principal Investigator
  
  OHTA Masamitsu
- Project Period (FY)
  1988 – 1989
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  林産学
- Research Institution
  The University of Tokyo
衝撃負荷をうける木材の破壊性状と破壊力学の適用Principal Investigator
- Principal Investigator
  
  太田正光
- Project Period (FY)
  1987
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  林産学
- Research Institution
  The University of Tokyo
Analysis of fracture mechanism of bolted joints and nail joints in LVL
- Principal Investigator
  
  SOBUE Nobuo
- Project Period (FY)
  1987 – 1988
- Research Category
  
  Grant-in-Aid for General Scientific Research (C)
- Research Field
  
  林産学
- Research Institution
  Nagoya University

All 2013 2012 2011 2010 2009 2006 Other

All Journal Article Presentation

[Journal Article] Analysis of decay progress anisotropy by X-Ray computer tomography2011
- Author(s)
  MAEDA Kei; OHTA Hasamitsu; MOMOHARA Ikuo
- Journal Title
  
  Pro Ligno
  
  Volume: 7(4) Pages: 18-25
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21248021
[Journal Article] Analysis of decay progress anisotropy by X-Ray computer tomography.2011
- Author(s)
  MAEDA Kei, OHTA Masamitsu, MOMOHARA Ikuo
- Journal Title
  
  Pro Ligno
  
  Volume: 7(4) Pages: 18-25
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-21248021
[Journal Article] Shearing strength and fracture mechanism of lath-mortar wall I. Analysis of shearing deformation of mortar wall with lath board.2006
- Author(s)
  M.Miyamura, M.Ohta, M.Sato
- Journal Title
  
  Mokuzai Gakkaishi 52(5)
  
  Pages: 303-311
- NAID
  10018270640
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-16380114
[Journal Article] ラス下地モルタル壁の耐力と破壊性状(第1報)2006
- Author(s)
  宮村雅史, 太田正光, 佐藤雅俊
- Journal Title
  
  木材学会誌 52(5)
  
  Pages: 303-311
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-16380114
[Presentation] 腐朽材のCT画像から得られる水分分布と密度減少の関係の検討2013
- Author(s)
  前田啓,太田正光
- Organizer
  第63回日本木材学会大会研究発表要旨集, N28-P-PM09
- Place of Presentation
  盛岡
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] CT画像を用いた腐朽材の 3 次元密度分布の評価2012
- Author(s)
  前田啓, 太田正光, 桃原郁夫
- Organizer
  第62回日本木材学会大会研究発表要旨集,N16-07-1045
- Place of Presentation
  札幌
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] CT画像を用いた腐朽材の3次元密度分布の評価2012
- Author(s)
  前田啓、太田正光、桃原郁夫
- Organizer
  第62回日本木材学会大会
- Place of Presentation
  札幌
- Year and Date
  2012-03-16
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] Analysis of decay progress anisotropy by X-ray2012
- Author(s)
  MAEDA Kei, OHTA Masamitsu
- Organizer
  Proceedings of 2012 IUFRO Conference Division 5 Forest
- Place of Presentation
  Lisbon, ポルトガル
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] 木材の腐朽進行の異方性の3次元的評価2011
- Author(s)
  前田啓、太田正光、桃原郁夫
- Organizer
  第61回日本木材学会大会
- Place of Presentation
  京都大学(京都市)
- Year and Date
  2011-03-18
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] Torsional strength of bolt-connected bar.Proceedings of International Conference2011
- Author(s)
  TAKAHASHI Anzu, OHTA Masamitsu
- Organizer
  "Wood Science and Engineering in the Third Millennium" 8th Edition. p. 515-520
- Place of Presentation
  Brasov, ルーマニア
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] Analysis of decay progress anisotropy by X-Ray computer tomography2011
- Author(s)
  MAEDA, Kei; OHTA, Masamitsu; MOMOHARA, Ikuo
- Organizer
  International Conference Wood Science and Engineering 8th
- Place of Presentation
  Brasov,ルーマニア
- Year and Date
  2011-11-04
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] Torsional strength of bolt-connected bar2011
- Author(s)
  TAKAHASHI Anzu; OHTA, Masamitsu
- Organizer
  International Conference Wood Science and Engineering 8th
- Place of Presentation
  Brasov,ルーマニア
- Year and Date
  2011-11-03
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] 木材の腐朽進行の異方性の 3 次元的評価2011
- Author(s)
  前田啓,太田正光,桃原郁夫
- Organizer
  第61回日本木材学会大会研究発表要旨集, p.16 (N18-07-1100)
- Place of Presentation
  京都
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] Simulation method for wooden construction under the decay.2010
- Author(s)
  MAEDA Kei, OHTA Masamitsu, MOMOHARA Ikuo
- Organizer
  Proceedings of the 11th World Conference on Timber Engineering, CD
- Place of Presentation
  Riva del Garda, イタリア
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] 腐朽材の密度分布と強度分布の比較2010
- Author(s)
  前田啓、太田正光、桃原郁夫
- Organizer
  日本木材学会
- Place of Presentation
  宮崎観光ホテル(宮崎県)
- Year and Date
  2010-03-18
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] Simulationmethod for wooden construction under the decay2010
- Author(s)
  MAEDA.Kei ; OHTA Masamitsu ; MOMOHARA, Ikuo
- Organizer
  11th World Conference on Timber Engineering
- Place of Presentation
  Riva del Garda (Italy)
- Year and Date
  2010-06-23
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] 腐朽材の密度分布と強度分布の比較2010
- Author(s)
  前田啓,太田正光,桃原郁夫
- Organizer
  第60回日本木材学会大会研究発表要旨集, p.81 (N18-1445)
- Place of Presentation
  宮崎
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] Strength of wood from the viewpoint of fracture process.2009
- Author(s)
  OHTA, Masamitsu
- Organizer
  International Symposium on the Recent Advances in Wood Biomass Research for Low Carbon and Green Growth
- Place of Presentation
  江原大学校(春川)
- Year and Date
  2009-04-15
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] 腐朽菌のCT画像から得られる水分分布と密度減少の関係の検討
- Author(s)
  前田啓、太田正光
- Organizer
  第63回日本木材学会大会
- Place of Presentation
  盛岡市 (岩手県)
- Data Source
  KAKENHI-PROJECT-21248021
[Presentation] Analysis of decay progress anisotropy by X-ray computer tomography
- Author(s)
  Kei MAEDA / Masamitsu OHTA
- Organizer
  2012 IUFRO CONFERENCE - FOREST PRODUCTS
- Place of Presentation
  ポルトガル、Estoril
- Data Source
  KAKENHI-PROJECT-21248021

1. YOSHIHARA Hiroshi (30210751)

# of Collaborated Projects: 10 results

# of Collaborated Products: 0 results
2. MISHIRO Akiyoshi (90012004)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
3. SOBUE Nobuo (50023495)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
4. AOKI Kenji (90313072)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
5. ANDO Naoto (90125980)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
6. MOMOHARA Ikuo (60222345)

# of Collaborated Projects: 1 results

# of Collaborated Products: 11 results
7. NAKAGAWA Takafumi (60414968)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. MASUDA Minoru (40027165)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. SATOH Kiyoshi (80006444)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. MIHASHI Hirozou (90091751)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
11. TSUCHIMOTO Takahiro (00261959)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
12. ARIMA Takanori (10144057)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
13. SATO Masatoshi (90302588)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
14. SASAKI Yasutosi (90154004)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. TSUZUKI Kazuo (60023438)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. TAKEMURA Tomio (90014919)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. OKANO Takeshi (30011927)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
18. ISOGAI Akira (40191879)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. KUGA Shigenori (60012051)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
20. SUGIYAMA Junji (40183842)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
21. 佐藤敬一 (90178723)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
22. 鈴木直之 (40106977)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

OHTA MASAMITSU 太田 正光

OHTA Masamitsu 太田 正光

Research Projects

Research Products

Co-Researchers

Analysis and experimental characterization of the fracture mechanics properties of structural wood-based materials

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Experimental characterization of wood-based composite materials and establishment of the novel characterization methods

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Development of a modeling method for the strength decreases and collapse process of wooden structures by the decay in progressPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Examination of the source of differences among the fracture mechanics properties of wood and wood-based materials obtained by different methods and establishment of the novel characterization methods

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Method establishment for the fracturing/collapsing process simulation of wooden houses under seismic loadingPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Establishment of characterization methods of compressed wood and analyses of its deformation and failure behaviors

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Basic study on the strength estimation of curved stacked plank structures with screw fixationPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Analysis of the fracture process of wooden frame structure under seismic loading by modified distinct-element method.Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

超音波顕微鏡による木材細胞壁の異方性弾性定数の測定ならびに音響的性質の検討Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Establshment of theory on fracture of wood and its application to RBD (Reliability Based Design)

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Analysis of the fracture process of wood by Modified Distinct Element Method.Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Analysis of Wood-cutting Mechanism by Impact Fracture TheoryPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Structural analysis of native cellulose and its derivatives by direct imaging of molecular chains

Principal Investigator

Project Period (FY)

OHTA MASAMITSU 太田正光

OHTA Masamitsu 太田正光