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