Optical Fiber Sensor Monitoring System of Composite Structures for Damage Tolerance Design

• Project/Area Number: 18106014
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Aerospace engineering
• Research Institution: The University of Tokyo
• Principal Investigator: TAKEDA Nobuo The University of Tokyo, 大学院・新領域創成科学研究科, 教授 (10171646)
• Co-Investigator(Kenkyū-buntansha): OKABE Yoji 東京大学, 生産技術研究所, 准教授 (90313006) ; MIZUTANI Tadahito 東京大学, 大学院・新領域創成科学研究科, 助教 (00401232) ; MINAKUCHI Shu 東京大学, 大学院・新領域創成科学研究科, 助教 (70512359) ; 西川 雅章 東京大学, 大学院・工学系研究科, 助教 (60512085) ; 青木 雄一郎 独立行政法人宇宙航空研究開発機構, 総合技術研究本部, 研究員 (00371112)
• Co-Investigator(Renkei-kenkyūsha): AOKI Yuichiro 独立行政法人宇宙航空研究開発機構, 研究開発本部, 研究員 (00371112) ; NISHIKAWA Masaaki 東北大学, 大学院・工学研究科, 准教授 (60512085)
• Research Collaborator: KISHIDA Kinzo ニューブレクス株式会社, 代表取締役
• Project Period (FY): 2006 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥103,220,000 (Direct Cost: ¥79,400,000、Indirect Cost: ¥23,820,000); Fiscal Year 2010: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000); Fiscal Year 2009: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000); Fiscal Year 2008: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000); Fiscal Year 2007: ¥27,820,000 (Direct Cost: ¥21,400,000、Indirect Cost: ¥6,420,000); Fiscal Year 2006: ¥29,510,000 (Direct Cost: ¥22,700,000、Indirect Cost: ¥6,810,000)
• Keywords: 航空宇宙工学 / 複合材料・物性 / 光ファイバセンサ / モニタリング / 複合材料 / 損傷許容設計 / 監視システム / 構造ヘルスモニタリング

Research Abstract

This study deals with the fundamental study of a novel optical fiber sensor monitoring system to realize the damage tolerance design of aerospace composite structures. First,"Visualization of damage initiation and growth and its theoretical formulation"is conducted for current advanced composites as a basic background research for the following health monitoring development. Then two different optical fiber sensor monitoring systems are developed to monitor the damage evolution in aerospace composite structures. One is"Monitoring system with Lamb wave detection"and the other is"Distributed strain monitoring system". Both optical fiber sensor monitoring systems are designed to characterize the damage evolution in composite structures in particular. Combination of two systems provides a more reliable and accurate characterization of the damage evolution in practical aerospace composite structures.

Research Products

• [Journal Article] Detecting an Arrested Crack in a Foam-Core Sandwich Structure Using an Optical Fiber Sensor Embedded in a Crack Arrester (2011)
  • Author(s): S.Minakuchi, Y.Yamauchi, N.Takeda, Y.Hirose
  • Journal Title: Advanced Composite Materials in press.(掲載確定)
  • Peer Reviewed
• [Journal Article] 航空宇宙機の構造ヘルスモニタリング技術の進展 (2011)
  • Author(s): 武田展雄, 越岡康弘
  • Journal Title: 非破壊検査 Vol.60, No.3 Pages: 157-164
  • Peer Reviewed
• [Journal Article] Life Cycle Monitoring of Large-Scale CFRP VARTM Structure by Fiber-Optic-Based Distributed Sensing (2011)
  • Author(s): S.Minakuchi, N.Takeda, S.Takeda, Y., Y.Nagao, A.Franceschetti, X.Liu
  • Journal Title: Composites : Part A Pages: 669-676
  • Peer Reviewed
• [Journal Article] Stress-Strain Behavior of Multi-Walled Carbon Nanotube/PEEK Composites (2011)
  • Author(s): T.Ogasawara, T.Tsuda, N.Takeda
  • Journal Title: Composites Science and Technology Volume: 71 Pages: 73-78
  • Peer Reviewed
• [Journal Article] Life Cycle Monitoring of Large-scale CFRP VARTM Structure by Fiber-Optic-Based Distributed Sensing (2011)
  • Author(s): S.Minakuchi, N.Takeda, S.Takeda, Y.Nagao, A.Franceschetti, X.Liu
  • Journal Title: Composites: Part A Volume: 42 Pages: 669-676
  • Peer Reviewed
• [Journal Article] 分布型光ファイバひずみセンサを用いた変位同定法による境界条件変化を考慮した構造物の変形モニタリング (2010)
  • Author(s): 西尾真由子, 武田展雄
  • Journal Title: 土木学会論文集 Vol.66, No.2 Pages: 229-238
  • NAID: 130004467211
  • Peer Reviewed
• [Journal Article] 光ファイバセンサによる極低温でのひずみ計測技術とその航空宇宙分野における応用 (2010)
  • Author(s): 水谷忠均, 武田展雄
  • Journal Title: 日本航空宇宙学会論文集 Vol.58, No.672 Pages: 24-30
  • NAID: 10026397613
  • Peer Reviewed
• [Journal Article] Structural Shape Reconstruction with Consideration of the Reliability of Distributed Strain Data from a Brillouin-Scattering-Based Optical Fiber Sensor (2010)
  • Author(s): M.Nishio, T.Muzutani, N.Takeda
  • Journal Title: Smart Materials and Structures Vol 19
  • Peer Reviewed
• [Journal Article] Structural Shape Reconstruction with Consideration of the Reliability of Distributed Strain Data from a Brillouin-Scattering-Based Optical Fiber Sensor (2010)
  • Author(s): M.Nishio, T.Muzutani, N.Takeda
  • Journal Title: Smart Materials and Structures Volume: 19
  • Peer Reviewed
• [Journal Article] 光ファイバセンサによる極低温でのひずみ計測技術とその航空宇宙分野における応用 (2010)
  • Author(s): 水谷忠均, 武田展雄
  • Journal Title: 日本航空宇宙学会論文集 Volume: 5(672) Pages: 24-30
  • NAID: 10026397613
  • Peer Reviewed
• [Journal Article] Thermomechanical Experiment and Analysis on Shape Recovery Properties of Shape Memory Polymer Influenced by Fiber (2010)
  • Author(s): N.Nishikawa, K.Wakatsuki, N.Takeda
  • Journal Title: Journal Mater.Science Volume: 45(14) Pages: 3957-3960
  • Peer Reviewed
• [Journal Article] 光ファイバひずみセンサを用いた変位同定法による境界条件変化を考慮した構造物の変形モニタリング (2010)
  • Author(s): 西尾真由子, 武田展雄
  • Journal Title: 土木学会論文集 Volume: 66(2) Pages: 229-238
  • Peer Reviewed
• [Journal Article] ファンエンジン複合材ブレードにおけるバードストライク損傷に関する有限要素解析 (2010)
  • Author(s): 西川雅章, 逸見啓, パクサンチョル, 灘部岳晃, 武田展雄
  • Journal Title: 日本航空宇宙学会論文集 Volume: 58(680) Pages: 261-268
  • NAID: 10026711420
  • Peer Reviewed
• [Journal Article] 光ファイバセンサによる極低温でのひずみ計測技術とその航空宇宙分野における応用 (2010)
  • Author(s): 水谷忠均, 武田展雄
  • Journal Title: 日本航空宇宙学会論文集 58(672) Pages: 24-30
  • NAID: 10026397613
  • Peer Reviewed
• [Journal Article] Structural Shape Reconstruction with Consideration of the Reliability of Distributed Strain Data from a Brillouin-Scattering-Based Optical Fiber Sensor (2010)
  • Author(s): M.Nishio, 水谷忠均, 武田展雄
  • Journal Title: Smart Materials and Structures 19
  • Peer Reviewed
• [Journal Article] Micromechanics on the Rate-Dependent Fracture of Discontinuous Fiber-Reinforced Plastics (2010)
  • Author(s): 岡部朋永, 西川雅章, 武田展雄
  • Journal Title: International Journal of Damage mechanics 0
  • Peer Reviewed
• [Journal Article] Barely Visible Impact Damage Detection for Composite Sandwich Structures by Optical-Fiber-Based Distributed Strain Measurement (2009)
  • Author(s): S.Minakuchi, Y.Okabe, T.Mizutani, N.Takeda
  • Journal Title: Smart Materials and Structures Vol.18 Pages: 85018-85018
  • Peer Reviewed
• [Journal Article] Improvement of Out-of Plane Impact Damage Resistance of CFRP Due to Through-the-Thickness Stitching (2009)
  • Author(s): A.Yoshimura, T.Nakao, 武田展雄
  • Journal Title: Advanced Composite Materials 18 Pages: 121-134
  • Peer Reviewed
• [Journal Article] Barely Visible Impact Damage Detection for Composite Sandwich Structures by Optical-Fiber-Based Distributed Strain Measurement (2009)
  • Author(s): S.Minakuchi, 岡部朋永, 水谷忠均, 武田展雄
  • Journal Title: Smart materials and Structures 18 Pages: 85018-85018
  • Peer Reviewed
• [Journal Article] 短繊維強化プラスチックの破壊モードに及ぼす材料微視構造の影響 (2009)
  • Author(s): 西川雅章, 岡部朋永, 武田展雄
  • Journal Title: 日本機械学会論文集A編 75(751) Pages: 287-295
  • NAID: 110007161325
  • Peer Reviewed
• [Journal Article] 一方向不連続CFRPの微視損傷形態と強度特性に関する周期セルシュミレーション (2009)
  • Author(s): 西川雅章, 岡部朋永, 武田展雄
  • Journal Title: 日本複合材料学会誌 35(4) Pages: 149-156
  • Peer Reviewed
• [Journal Article] Periodic-Cell Simulations for the Microscopic Damage and Strength Properties of Discontinuous Carbon Fiber-Reinforced Plastic Composites (2009)
  • Author(s): 西川雅章, 岡部朋永, 武田展雄
  • Journal Title: Advanced Composite Materials 18(1) Pages: 77-93
  • NAID: 10025204006
  • Peer Reviewed
• [Journal Article] 光ファイバセンサー利用次世代航空機構造ヘルスモニタリング技術 (2009)
  • Author(s): 武田展雄
  • Journal Title: O plus E(Optics+electronics) 31(9) Pages: 1004-1008
• [Journal Article] 航空宇宙機の軽量化・高信頼性を支える複合材構造ヘルスモニタリング技術 (2009)
  • Author(s): 武田展雄
  • Journal Title: 日本機械学会誌 112(1088) Pages: 10-13
• [Journal Article] Brillouin Spectral Response depending on Strain Non-uniformity within Centimeter Spatial Resolution and its Application to Internal Damage Detection in Large-scaled Composite Structures (2009)
  • Author(s): S. Minakuchi, T. Mizutani, H. Tsukamoto, M. Nishio, Y. Okabe, and N. Takeda
  • Journal Title: Structural Durability & Health Monitoring (in press)
• [Journal Article] Brillouin Spectral Response depending on Strain Non-uniformity within Centimeter Spatial Resolution and its Application to Internal Damage Detection in Large-scaled Composite Structures (2009)
  • Author(s): S. Minakuchi, T. Mizutani, H. Tsukamoto, M. Nishio, Y. Okabe, and N. Takeda
  • Journal Title: Structurel Durability & Health Monitoring (in press)
  • Peer Reviewed
• [Journal Article] Brillouin Spectral Response depending on Strain Non-uniformity within Centimeter Spatial Resolution and its Application to Internal Damage Detection in Large-scaled Composite Structures (2008)
  • Author(s): S.Minakuchi, T.Mizutani, H.Tsukamoto, M.Nishio, Y.Okabe, N.Takeda
  • Journal Title: Structural Durability & Health Monitoring vol.4, No.4 Pages: 199-219
  • Peer Reviewed
• [Journal Article] Smart Honeycomb Sandwich Panels With Damage Detection and Shape Recovery Functions (2008)
  • Author(s): Y.Okabe, S.Minakuchi, N.Shiraishi, K.Murakami, N.Takeda
  • Journal Title: Advanced Composite Materials Vol.17 Pages: 41-56
  • NAID: 10023982429
  • Peer Reviewed
• [Journal Article] Segment-Wise Model for Theoretical Simulation of Barely Visible Indentation Damage in Composite Sandwich Beams : Part-II-Experimental Verification and Discussion (2008)
  • Author(s): S.Minakuchi, Y.Okabe, N.Takeda
  • Journal Title: Composites Part A 38 Pages: 2443-2450
  • Peer Reviewed
• [Journal Article] Segment-Wise Model for Theoretical Simulation of Barely Visible Indentation Damage in Composite Sandwich Beams : Part I-Formulation (2008)
  • Author(s): S.Minakuchi, Y.Okabe, N.Takeda
  • Journal Title: Composites Part A Vol.39 Pages: 133-144
  • Peer Reviewed
• [Journal Article] "Segment-Wise Model"for Theoretical Simulation of Barely Visible Indentation Damage in Composite Sandwich Beams: Part I- Formulation (2008)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takeda
  • Journal Title: Composites Part A Vol. 39 Pages: 133-144
• [Journal Article] "Segment-Wise Model" for Theoretical Simulation of Barely Visible Indentation Damage in Composite Sandwich Beams: Part II- Experimental Verification and Discussion (2008)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takeda
  • Journal Title: Composites Part A 38 Pages: 2443-2450
• [Journal Article] "Segment-Wise Mode1" for Theoretical Simulation of Barely Visible Indentation Damage in Composite Sandwich Beams:PartII-Experimental Verification and Discussion (2008)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takada
  • Journal Title: Composites Part A 39 Pages: 133-144
  • Peer Reviewed
• [Journal Article] Segment-Wise Mode1" for Theoretical Simulation of Barely Visible Indentation Damage in Composite Sandwich Beams:PartII-Experimental Verification and Discusslon (2008)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takeda
  • Journal Title: Composites Part A 38 Pages: 2443-2450
  • Peer Reviewed
• [Journal Article] Monitoring of a CFRP-Stiffened Panel ManufaCtured by VaRTM Using Fiber-Optic Sensors (2008)
  • Author(s): S. Takeda, Y. Mizutani, T. Nishi, N. Uota, Y. Hirano, Y. Iwahori, Y. Nagao and N. Takeda
  • Journal Title: Advanced Composite Materials 17 Pages: 125-137
  • Peer Reviewed
• [Journal Article] ブリルアン式高分解能分布型光ファイバひずみセンサを用いたCFRP構造の形状同定 (2008)
  • Author(s): 西尾真由子,水谷忠均,武開展雄
  • Journal Title: 日本航空宇宙学会論文集 58 Pages: 522-529
  • NAID: 10024825942
  • Peer Reviewed
• [Journal Article] "Segment-Wise Model" for Theoretical Simulation of Barely Visible Indentation Damage in Composite Sandwich Beams:Part I-Formulation (2008)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takeda
  • Journal Title: Composites Part A 39 Pages: 133-144
  • Peer Reviewed
• [Journal Article] Numerical Study for Identifying Damage in Open-Hole Composites with Embedded FBG Sensors and its Application to Experimental Results (2007)
  • Author(s): S.Yashiro, K.Murai, T.Okabe, N.Takeda
  • Journal Title: Advanced Composite Materials Vol.16, No.2 Pages: 115-134
  • NAID: 10023982278
  • Peer Reviewed
• [Journal Article] Debonding Monitoring of Composite Repair Patches Using Embedded Small-diameter FBG Sensors (2007)
  • Author(s): S.Takeda, Y.Yamamoto, Y.Okabe, N.Takeda
  • Journal Title: Smart Materials and Structures Vol.16 Pages: 763-770
  • Peer Reviewed
• [Journal Article] Real-Time Detection of Debonding between Honeycomb Core and Facesheet Using a Small-Diameter FBG Sensor Embedded in Adhesive Layer (2007)
  • Author(s): S.Minakuchi, Y.Okabe, N.Takeda
  • Journal Title: Journal of Sandwich Structures & Materials Vol.9, No.1 Pages: 9-33
  • Peer Reviewed
• [Journal Article] Damage Identification in a Holed CFRP Laminate Using a Chirped Fiber Bragg Grating Sensor (2007)
  • Author(s): S.Yashiro, T.Okabe, N.Takeda
  • Journal Title: Compos.Sci.Tech. Vol.67 Pages: 286-295
  • Peer Reviewed
• [Journal Article] Evaluation of Debonding Progress in Composite Bonded Structures Using Ultrasonic Waves Received in Fiber Bragg Grating Sensors (2007)
  • Author(s): Y.Okabe,, J.Kuwahara, K.Natori, N.Takeda, T.Ogisu, S.Kojima, S.Komatsuzaki
  • Journal Title: Smart Materials and Structures Vol.16, No.4 Pages: 1370-1378
  • Peer Reviewed
• [Journal Article] 弾性波受信FBGセンサを用いたCFRP構造体中の剥離進展の評価 (2007)
  • Author(s): 岡部洋二, 武田展雄, 荻巣敏充, 小島正嗣
  • Journal Title: 検査技術 Vol.12, No.9 Pages: 1-7
  • Peer Reviewed
• [Journal Article] Smart Composite Sandwich Structures for Future Aerospace Application-Damage Detection and Suppression- : a Review (2007)
  • Author(s): N.Takeda, S.Minakuchi, Y.Okabe
  • Journal Title: Journal of Solid Mechanics and Materials Engineering Vol.1, No.1 Pages: 3-17
  • NAID: 130000076019
  • Peer Reviewed
• [Journal Article] Damage Detection in Composites Using Optical Fibre Sensors (2007)
  • Author(s): 武田展雄, 岡部洋二, 水谷忠均
  • Journal Title: Proc.IMechE Part G : J.Aerospace Engineering Vol.221 Pages: 497-508
  • Peer Reviewed
• [Journal Article] Damage Identification in a Holed CFRP Laminate Using a Chirped Fiber Bragg Grating Sensor (2007)
  • Author(s): S. Yashiro, T. Okabe and N. Takeda
  • Journal Title: Compos. Sci. Tech. Vol. 67 Pages: 286-295
• [Journal Article] Evaluation of Debonding Progress in Composite Bonded Structures Using Ultrasonic Waves Received in Fiber Bragg Grating Sensors (2007)
  • Author(s): Y. Okabe, J. Kuwahara, K. Natori, N. Takeda, T. Ogisu, S. Kojima and S. Komatsuzaki
  • Journal Title: Smart Mater. Struct. Vol.16, No.4 Pages: 1370-1378
• [Journal Article] Debonding Monitoring of Composite Repair Patches Using Embedded Small-diameter FBG Sensors (2007)
  • Author(s): S. Takeda, T. Yamamoto, Y. Okabe and N. Takeda
  • Journal Title: Smart Materials and Structures 16 Pages: 763-770
  • Peer Reviewed
• [Journal Article] スカーフ補修複合材の衝撃損傷特性の評価に関する研究 (2007)
  • Author(s): 高橋 市弥, 武田 真一, 岩堀 豊, 武田 展雄
  • Journal Title: 材料 56 Pages: 414-419
  • NAID: 130002085885
  • Peer Reviewed
• [Journal Article] Real-Time Detection of Debonding between Honeycomb Core and Facesheet Using a Small-Diameter FBG Sensor Embedded in Adhesive Layer (2007)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takeda
  • Journal Title: Sandwich Structures & Materials 9 Pages: 9-33
  • Peer Reviewed
• [Journal Article] Numerical Study for Identifying Damage in Open-H01e Composites with Embedded FBG sensors and its ApPhcation to Experimental Results (2007)
  • Author(s): S. Yashiro, K. Murai, T. Okabe and N. Takeda
  • Journal Title: Advanced Composite Materials 16 Pages: 115-134
  • Peer Reviewed
• [Journal Article] Evaluation of Debonding Progress in Composite Bonded Structures Using Ultrasonic Waves Received in Fiber Bragg Grating Sensors (2007)
  • Author(s): Y. Okabe, J. Kuwahara, K. Natori, N. Takeda, T. Ogisu, S. Kojima and S. Komatsuzaki
  • Journal Title: Smart Materials and Structures 16 Pages: 1370-1378
  • Peer Reviewed
• [Journal Article] Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors (2007)
  • Author(s): M. Amano, Y. Okabe, N. Takeda and T. Ozaki
  • Journal Title: Structural Health Monitoring 6 Pages: 309-324
  • Peer Reviewed
• [Journal Article] Damage Identification in a Ho1ed CFRP Laminate Usign Chirped Fiber Bragg Grating Sensor (2007)
  • Author(s): S. Yashiro, T. Okabe and N. Takeda
  • Journal Title: Composites Science and Technology 67 Pages: 286-295
  • Peer Reviewed
• [Journal Article] "Segment-Wise Model" for Theoretical Simulation of Barely Visible Indentation Damage in Composite Sandwich Beams:Part II-Expehmental Verification and Discussion (2007)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takeda
  • Journal Title: Composites Part A 38 Pages: 2443-2450
  • Peer Reviewed
• [Journal Article] Damage Detection in Composites Using Optical Fibre Sensors (2007)
  • Author(s): N. Takeda, Y. Okabe and T. Mizutani
  • Journal Title: Proc. IMechE Part G:J. Aerospace Engineering 221 Pages: 497-508
  • Peer Reviewed
• [Journal Article] Smart Composite Sandwich Structure for Future Aerospace Apphcation-Damage Detection and Suppression-:a Review (2007)
  • Author(s): N. Takeda, S. Minakuchi and Y. Okabe
  • Journal Title: Journal of Solid Mechanics and Materials Engineering 1 Pages: 3-17
  • Peer Reviewed
• [Journal Article] Monitoring Damage in Holed CFRP Laminates Using Embedded Chirped FBG Sensors (2007)
  • Author(s): S.Yashiro, T.Okabe, N.Toyama, N.Takeda
  • Journal Title: Int. Journal of Solids and Structures 44 Pages: 603-613
• [Journal Article] Damage Identification in a Holed CFRP Laminate Using a Chirped Fiber Bragg Grating Sensor (2007)
  • Author(s): S.Yashiro, T.Okabe, N.Takeda
  • Journal Title: Composites Science and Technology 67 Pages: 286-295
• [Journal Article] Structural Health Monitoring of Composite Wing Structure During Durability Test (2007)
  • Author(s): S.Takeda, Y.Aoki, T.Ishikawa, N.Takeda, H.Kikukawa
  • Journal Title: Composite Structures 79 Pages: 133-139
• [Journal Article] Real-Time Detection of Debonding between Honeycomb Core and Facesheet Using a Small-Diameter FBG Sensor Embedded in Adhesive Layer (2007)
  • Author(s): S.Minakuchi, Y.Okabe, N.Takeda
  • Journal Title: Journal of Sandwich Structures ＆ Materials 9・1 Pages: 9-33
• [Journal Article] Feasibility Studies on Active Damage Detection for CFRP Aircraft Bonding Structures (2006)
  • Author(s): T.Ogisu, M.Shimanuki, S.Kiyoshima, Y.Okabe, T.Takeda
  • Journal Title: Adv. Composite Mater. 15・2 Pages: 153-173
• [Journal Article] On-board Strain Measurement of a Cryogenic Composite Tank Mounted on a Reusable Rocket Using FBG Sensors (2006)
  • Author(s): T.Mizutani, N.Takeda, H.Takeya
  • Journal Title: Structural Health Monitoring 5・3 Pages: 205-214
• [Presentation] Towards Life Cycle Monitoring by Fibre-Opitic-Based Distributed Sensing for Large-scale CFRP Structures (2011)
  • Author(s): N.Takeda, S.Minakuchi, S.Takeda, Y.Nagao, X.Liu
  • Organizer: Processing & Fabrication of Adv.Materials-XIX
  • Place of Presentation: Auckland, New Zealand
• [Presentation] Practical Application Study of an Impact Damage Detection System for an Airframe Composite Structure (2010)
  • Author(s): H.Tsutsui, N.Hirano, J.Kimoto, T.Akatsuka, H.Sashikuma, N.Takeda , Y.Koshioka
  • Organizer: Fifth Europian Workshop of Structural Health Monitoring
  • Place of Presentation: Sorrento, Italy
  • Year and Date: 2010-07-01
• [Presentation] The Strain Dependence on the Lamb Wave Sensing System Using FBG Sensor and PZT Actuator (2010)
  • Author(s): H.Soejima, N.Nakatani, T.Ogisu, Y.Okabe, N.Takeda, Y.Koshioka
  • Organizer: Fifth Europian Workshop of Structural Health Monitoring
  • Place of Presentation: Sorrento, Italy
  • Year and Date: 2010-07-01
• [Presentation] Fiber-Opitic-Based Hierarchical Sensing Systems for Detecting Impact Damage in Large-Scale Aerospace CFRP Structure (2010)
  • Author(s): S.Minakuchi, H.Tsukamoto , N.Takeda
  • Organizer: Fifth Europian Workshop of Structural Health Monitoring
  • Place of Presentation: Sorrento, Italy
  • Year and Date: 2010-06-30
• [Presentation] Full-Field Damage Detection System for Composite Structures Using Pulse-Laser Generated Lamb Waves (2010)
  • Author(s): N.Takeda, I Takahashi, Y.Ito
  • Organizer: Fifth Europian Workshop of Structural Health Monitoring
  • Place of Presentation: Sonento, Italy
  • Year and Date: 2010-06-30
• [Presentation] Visualization of Impact Damage in Composite Structures Using Pulsed Laser Scanning Method (2010)
  • Author(s): N.Takeda, I.Takahashi , Y.Ito
  • Organizer: AIAA Structures, Structural Dynamics and Materials Conference
  • Place of Presentation: Orlando, FL, USA(Invited)
  • Year and Date: 2010-04-12
• [Presentation] Visualization of Impact Damage in Composite Structures Using Pulsed Laser Scanning Method (2010)
  • Author(s): N.Takeda, I.Takahashi, Y.Ito
  • Organizer: Proc.51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference(Invited) AIAA-2010-2529, 8p.
  • Place of Presentation: Orlando, FL, USA
  • Year and Date: 2010-04-11
• [Presentation] Process Monitoring for Large-scale Composite Structures by Optical-fiber-based Distributed Sensing System (2010)
  • Author(s): Y.Ito, K.Fujimoto, S.Minakuchi, T.Mizutani, N.Takeda, H.Koinuma, T.Shimizu
  • Organizer: American Society for Composites 25th AnnualTechnical Conference(14th U.S.-Japan Conference on Composites Materials)
  • Place of Presentation: Dayton, OH, USA
• [Presentation] Formation and Relaxation of Facesheet Dent on Indented Foam Core Sandwich Beams (2010)
  • Author(s): S.Minakuchi, T.Uezono , N.Takeda
  • Organizer: American Society for Composites 25th Annual Technical Conference(14th U.S.-Japan Conference on Composites Materials)
  • Place of Presentation: Dayton, OH, USA
• [Presentation] Numerical Modeling of Impact-Induoed Damage in Composite Laminatesunder Soft-Body Impact with Interlaminar Damage Zone Using Homogenization Method (2010)
  • Author(s): S.C.Park, M.Nishikawa, A.Yoshimura , N.Takeda
  • Organizer: American Society for Composites 25th AnnualTechnical Conference(14th U.S.-Japan Conferenceon Composites Materials)
  • Place of Presentation: Dayton, OH, USA
• [Presentation] A Damage Model for the Simulation of Bearing Failure in Bolted Joints of Interlaminar Toughened CFRP Laminates (2010)
  • Author(s): T.Nadabe, M.Nishikawa, J.Siivola, N.Takeda
  • Organizer: American Society for Composites 25th Annual Technical Conference(14th U.S.-Japan Conferenceon Composites Materials)
  • Place of Presentation: Dayton, OH, USA
• [Presentation] Damage Modeling of Bearing Failure in CFRP Bolted Joints Based on Fiber Compressive Failure Criterion under Multiaxial Stress States (2010)
  • Author(s): M.Nishikawa, T.Nadabe , N.Takeda
  • Organizer: American Society for Composites 25th Annual Technical Conference(14th U.S.-Japan Conferenceon Composites Materials)
  • Place of Presentation: Dayton, OH, USA
• [Presentation] Fiber-Optic Based Hierarchical Sensing System for Detecting Impact Damage in Large-scale Aerosapce CFRP Structure (2010)
  • Author(s): S.Minakuchi, H.Tsukamoto ,H.Banshouya, N.Takeda
  • Organizer: American Society for Composites 25th Annual Technical Conference(14th U.S.-Japan Conference on Composites Materials)
  • Place of Presentation: Dayton, OH, USA
• [Presentation] Patch Repair of CFRP Panels with Impact Damage Detected by Structural Health.Monitoring Technology (2010)
  • Author(s): M.Takai, S.Minakuchi , N.Takeda
  • Organizer: 7th Asian-Australasian Conference on Composite Materials(ACCM)
  • Place of Presentation: Taipei, Taiwan
• [Presentation] Effect of the Microstructure on Thermo-Mechanical Properties of Shape-Memory Polymer Reinforced with Short Fibers (2010)
  • Author(s): K.Wakatsuki, M.Nishikawa, A.Yoshimura , N.Takeda
  • Organizer: 7th Asian-Auatralasian Conference on Composite Materials(ACCM)
  • Place of Presentation: Taipei, Taiwan
• [Presentation] Residual Dent Formation on Foam Core Sandwich Beams Under Indentation Loading (2010)
  • Author(s): T.Uezono, S.Minakuchi, N.Takeda
  • Organizer: 7th Asian-Australasian Conference on Composite Materials(ACCM)
  • Place of Presentation: Taipei, Taiwan
• [Presentation] Application of Distributed Optical Fiber Sensing to Manufacturing Process Monitoring of CFRP Panels (2010)
  • Author(s): K.Fujimoto, Y.Ito, S.Minakuchi, T.Mizutani, N.Takeda, H.Koinuma, T.Shimizu
  • Organizer: 7th Asian-Australasian Conference on Composite Materials(ACCM)
  • Place of Presentation: Taipei, Taiwan
• [Presentation] Impact Damage Detection in Scarf-Repaired Composites by Visualized Ultrasonic Wave Propagation using Pulsed Laser. (2009)
  • Author(s): Y.Ito, I.Takahashi, 武田展雄
  • Organizer: 7th Japan-Korea Joint Symposium on composite Materials
  • Place of Presentation: Kanazawa, Japan
  • Year and Date: 2009-09-25
• [Presentation] Impact Damage Detection of CFRP Panel using Fiber-Optic-Based Hierachical Sensing System (2009)
  • Author(s): S.Minakuchi, H.Tukamoto, 武田展雄
  • Organizer: 7th Japan-Korea Joint Symposium on composite Materials
  • Place of Presentation: Kanazawa, Japan
  • Year and Date: 2009-09-25
• [Presentation] 高分解能分布型光ファイバセンサを用いた複合材構造ヘルスモニタリング(基調講演) (2009)
  • Author(s): 武田展雄, 水口周
  • Organizer: 日本実験力学学会2009年度次講演会
  • Place of Presentation: 東京
  • Year and Date: 2009-08-06
• [Presentation] Damage Growth Prediction in Fiber Reinforced Composites and Structural Health Monitoring (2009)
  • Author(s): N.Takeda
  • Organizer: RAMM & ASMP '09(Plenary)
  • Place of Presentation: Penang, Malaysia.
  • Year and Date: 2009-06-01
• [Presentation] Damage Growth Prediction in Fiber Reinforced Composites and Structural Health Monitoring (2009)
  • Author(s): 武田展雄
  • Organizer: RAMM & AAMP '09 Plenary Presentation
  • Place of Presentation: Penang, Malaysia
  • Year and Date: 2009-06-01
• [Presentation] Characterisation of Carbon NCF for Vacuum Bag Resin Infusion (2009)
  • Author(s): A.Franceschetti, R.Roberts, X.Liul, B.G.Falzon, Y.Nagao, 武田展雄
  • Organizer: APISAT(Asia-Pacific International Symposium on Aerospace Technology
  • Place of Presentation: Gifu
• [Presentation] Clamping Force Effect on Fiber Kinking Onset in Bearing Failure of Bolted Joints of CFRP Laminates (2009)
  • Author(s): T.Nadabe, M.Nishikawa, T.Nakamura, 武田展雄
  • Organizer: 11th Japan International SAMPE Symposium & Exhibition
  • Place of Presentation: Tokyo
• [Presentation] Australia-Japan Joint Project on on Advanced Aircraft Structure Incorporating SHM (2009)
  • Author(s): S.Takeda, Y.Nagao, 水口周, 武田展雄, A..Franceschetti, X-L..Liu
  • Organizer: 11th Japan International SAMPE Symposium & Exhibition
  • Place of Presentation: Tokyo
• [Presentation] Residual Dent Formation of Foam Core Sandwich Structures Under Localized Transverse Loading (2009)
  • Author(s): T.Uezono, 水口周, 武田展雄
  • Organizer: 11th Japan International SAMPE Symposium & Exhibition
  • Place of Presentation: Tokyo
• [Presentation] Tensile Property and Observation of Nano-Crack Generation and Propagation of Composite Film Containing Carbon Nanotubes by SEM (2009)
  • Author(s): T.Tsuda, 武田展雄, T.Ogasawara, F.Deng
  • Organizer: 11th Japan International SAMPE Symposium & Exhibition
  • Place of Presentation: Tokyo
• [Presentation] Impact Damage Detection in Scarf-Repaired Composites by Visualized Ultrasonic Wave Propagation using Pulsed Laser (2009)
  • Author(s): Y.Ito, 武田展雄, I.Takahashi
  • Organizer: 11th Japan International SAMPE Symposium & Exhibition
  • Place of Presentation: Tokyo
• [Presentation] Hierarchical Damage Detection in Composite Structures using Optical Fiber Sensor and Distributed Devices (2009)
  • Author(s): H.Tsukamoto, 武田展雄, 水口周
  • Organizer: 11th Japan International SAMPE Symposium & Exhibition
  • Place of Presentation: Tokyo
• [Presentation] Characteristics of Residual Strain Induced by Thermomechanical Cycle in Shape Memory Polymer with Short Carbon Fiber (2009)
  • Author(s): K.Wakatsuki, M.Nishikawa, 武田展雄
  • Organizer: 11th Japan International SAMPE Symposium & Exhibition
  • Place of Presentation: Tokyo
• [Presentation] Deformation Monitoring of Composite Structures with Consideration of Data Reliability of Embedded Brillouin-Scattering Based Distributed Optical Fiber Strain Sensor (2009)
  • Author(s): M.Nishio, 武田展雄
  • Organizer: 7th International Workshop on Structural Health Monitoring
  • Place of Presentation: Stanford, USA
• [Presentation] Hierarchical Sensing System for Detecting Impact Damage in Composite Structures Combining a Fiber Optic Spinal Cord Network and Distributed Sensor Nerve Cell Devices (2009)
  • Author(s): 水口周, H.Tsukamoto, 武田展雄
  • Organizer: 7th International Workshop on Structural Health Monitoring
  • Place of Presentation: Stanford, USA
• [Presentation] Demonstration of De-Bonding Detection by the Lamb Wave Sensing Device Using FBG Sensor and AWG Type Filter (2009)
  • Author(s): N.Nakamura, T.Ogisu, H.Soejima, 武田展雄, Y.Okabe, N.Takeda, Y.Koshioka
  • Organizer: 7th International Workshop on Structural Health Monitoring
  • Place of Presentation: Stanford, USA
• [Presentation] Reliability of the Impact Damage Detection System for Airframe Structures Using Optical Fiber Sensors (2009)
  • Author(s): N.Hirano, H.Tsutsui, J.Kimoto, T.Akatsuka, H.Sashikuma, 武田展雄, Y.Koshioka
  • Organizer: 7th International Workshop on Structural Health Monitoring
  • Place of Presentation: Stanford, USA
• [Presentation] Detection of Arrested Crack for Foam Core Sandwich Structures Using Optical Fiber Sensors Embedded in a Crack Arrester (2009)
  • Author(s): 水口周, I.Yamauchi, 武田展雄, Y.Hirose
  • Organizer: 25th ICAF Symposium
  • Place of Presentation: Rotterdam, Netherland
• [Presentation] Research and Development of Impact Damage Detection System for Airframe Structures Using Optical Fiber Sensors (2009)
  • Author(s): H.Tsutsui, N.Hirano, J.Kimoto, T.Akatsuka, H.Sashikuma, 武田展雄, N.Tajima
  • Organizer: 25th ICAF Symposium
  • Place of Presentation: Rotterdam, Netherland
• [Presentation] Development of a Structural Health Monitoring System to Evaluate De-Bonding in Composite Adhesive Structures (2009)
  • Author(s): H.Soejima, N.Nakamura, T.Ogisu, H.Wakai, Y.Okabe, 武田展雄, Y.Koshioka
  • Organizer: 25th ICAF Symposium
  • Place of Presentation: Rotterdam, Netherland
• [Presentation] shape Reconstruction of Composite Structures with Monitoring of Modeling Changes Using Brillouin Scattering-based Distributed Optical Fiber Strain Sensor Network (2009)
  • Author(s): M. Nishio and N. Takeda
  • Organizer: 6^<th> Int. Symp. SPIE Smart Struc. and Mater . & Nondestructive Evaluation and Health Monitoring
  • Place of Presentation: San Diego
• [Presentation] Detection of Water Accumulation in Aircraft Honeycomb Sandwich Structures Using Optical Fiber Based Distributed Temperature Measurement (2008)
  • Author(s): S. Minakuchi, H. Tsukamoto and n. Takeda
  • Organizer: 2_<nd> Asia-Pacific Workshop on Structural Health Monitoring
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2008-12-02
• [Presentation] Crack Detection for Foam Core Sandwich Structures Using FBG Sensors Embedded in a Crack Arrester (2008)
  • Author(s): N. Takeda, S. Minakuchi, I. Yamauchi and Y. Hirose
  • Organizer: 2_<nd> Asia-Pacific Workshop on Structural Health Monitoring
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2008-12-02
• [Presentation] 2cm Spatial Resolution Brillouin Distributed Sensing System Using PPP-BOTDA Method (2008)
  • Author(s): K. Kishida, C. H. Li and N. Takeda
  • Organizer: 2_<nd> Asia-Pacific Workshop on Structural Health Monitoring
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2008-12-02
• [Presentation] Recent Development of Structural Health Monitoring Technologies for Aircraft Composite Structures (2008)
  • Author(s): N. Takeda
  • Organizer: Seminar at Australian domposite Structures Society
  • Place of Presentation: Melbourne, Australia
  • Year and Date: 2008-12-01
• [Presentation] Impact Damage Detection Scheme of CFRP Sandwich Structures Based on Optical Fiber Based Distributed Strain Measurement (2008)
  • Author(s): N. Takeda
  • Organizer: Tri-University Workshop on Aero-Structural Mechanics & Aerosrace Engineering(NASPC/TUWMAE 2008)
  • Place of Presentation: Beijing, China
  • Year and Date: 2008-10-31
• [Presentation] Structural Health Monitoring of CFRP Sandwich Structures by Optical Fiber Based Distributed Strain Measurement (2008)
  • Author(s): N. Takeda and S. Minakuchi
  • Organizer: 6th Asia-Australasian Conference on Composite Materials(ACCM-6)
  • Place of Presentation: Kumamoto
  • Year and Date: 2008-09-23
• [Presentation] Recent Development of Structural Health Monitoring Technologies for Aircraft Composite Structures (2008)
  • Author(s): N. Takeda
  • Organizer: 6th congress of theInternational Council of the Aeronautical Sciences(ICAS 2008)
  • Place of Presentation: Anchorage, USA
  • Year and Date: 2008-09-14
• [Presentation] Research on Multifunctional Materials & Structural Health Monitoring in Japan (2008)
  • Author(s): N. Takeda
  • Organizer: SAMPE Fall Technical Conference and Exhibition
  • Place of Presentation: Memphis, USA
  • Year and Date: 2008-09-08
• [Presentation] Detection of Barely Visible Impact Damage in CFRP Sandwich Structures by Optical Fiber Based Distributed Strain Measurement (2008)
  • Author(s): N. Takeda and S. Minakuchi
  • Organizer: Fourth European Workshop of Structural Health Monitoring
  • Place of Presentation: Cracow, Poland
  • Year and Date: 2008-07-02
• [Presentation] Special International Panel Discussion (Invited Panelisu) (2008)
  • Author(s): N. Takeda
  • Organizer: 49^<th> AIAA/ASME/ASCE/AHS/ASC Strctures, Strctural Dynamics, and Materials Conference
  • Place of Presentation: Schaumburg, USA
  • Year and Date: 2008-04-07
• [Presentation] Shape Identification of Variously Defbrmed Composite Laminates Using Brilloiin Type Distributed Strain Sensing System with Embedded Optical Fibers (2008)
  • Author(s): M. Nishio, T. Mizutani and N. Takeda.
  • Organizer: 5th Int. Symp. SPIE Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring
  • Place of Presentation: San Diego
  • Year and Date: 2008-03-12
• [Presentation] Fiber Optic Sensor-Based SHM Technologies for Aerospace Applications in Japan (2008)
  • Author(s): N.Takeda
  • Organizer: 5th Int. Symp. SPIE Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring(Invited)
  • Place of Presentation: San Diego
  • Year and Date: 2008-03-10
• [Presentation] Fiber Optic Sensor-Based SHM Technologies for Aerospace Apphcations in Japan (2008)
  • Author(s): N. Takeda.
  • Organizer: 5th Int. Symp. SPIE Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring
  • Place of Presentation: San Diego
  • Year and Date: 2008-03-10
• [Presentation] Recent Development of Structural Health Monitoring Technologies for Aircraft Composite Structures (2008)
  • Author(s): N.Takeda
  • Organizer: 26^<th> Cong. Inter. Council of Aeronautical Sci. (ICAS 2008)(Plenary)
  • Place of Presentation: Anchorage, AL, USA.
• [Presentation] Research on Multifunctional Materials & Structural Health Monitoring in Japan (2008)
  • Author(s): N.Takeda
  • Organizer: SAMPE Fall Technical Conference and Exhibition(Featured Lecture)
  • Place of Presentation: Memphis, Tennessee, USA.
• [Presentation] Detection of Barely Visible Impact Damage in CFRP Sandwich Structures by Optical Fiber Based Distributed Strain Measurement (2008)
  • Author(s): N. Takeda and S. Minakuchi
  • Organizer: Proc. 4th Euro. Workshop Struct. Health Monitor.
  • Place of Presentation: Cracow, Poland
• [Presentation] 航空宇宙複合材料構造の発展をヘルスモニタリング技術の現状と展望 (2008)
  • Author(s): 武田展雄
  • Organizer: 第50回構造強度に関する講演会
  • Place of Presentation: 北九州
• [Presentation] Impact Damage Detection of CFRP Scarf Repair Using FBG Sensors (2007)
  • Author(s): S. Takeda, I. Takahashi, U. Itoh Y. Iwahori and N. Takeda.
  • Organizer: The 6th Korea-Japan Joint Symposium on Composite Materials
  • Place of Presentation: Pohang
  • Year and Date: 2007-11-01
• [Presentation] Debonding Progress Evaluation in CFRP Bonded Structures Using Ultrasinic Monitoing System (2007)
  • Author(s): K. Natori, Y Okabe, N. Takeda and T. Ogisu.
  • Organizer: The 6th Korea-Japan Joint Symposium on Composite Materials
  • Place of Presentation: Pohang
  • Year and Date: 2007-11-01
• [Presentation] Impact Damage Monitoring of Sandwich Structure by Distributed Strain Measurement with cm-Order Spatial Resolution (2007)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takeda.
  • Organizer: American Society for Composites Twenty-Second Technical Conference
  • Place of Presentation: Seattle
  • Year and Date: 2007-09-17
• [Presentation] Simplified Evaluation Method of Debonding Length in CFRP Bonded Structures Using Lamb Waves (2007)
  • Author(s): Y. Okabe, K. Natori, N. Takeda and T. Ogisu.
  • Organizer: The 6th International Workshop on Structural Heath Monitorig
  • Place of Presentation: Stanford
  • Year and Date: 2007-09-13
• [Presentation] Debonding Detection in Scarf-Repaired CFRP Laminates using Lamb-Wave Visualization by Generation Laser Scanning Method (2007)
  • Author(s): I. Takahashi, Y. Ito, S. Takeda, Y. Iwahori, S. Yashiro, J. Takatsubo and N. Takeda.
  • Organizer: The 6th Intemational Workshop on Structural Heath Monitorig
  • Place of Presentation: Stanford
  • Year and Date: 2007-09-12
• [Presentation] Structural Shape Identification of Composite Structures Using Embedded Optical Fiber Sensors (2007)
  • Author(s): M. Nishio, T. Mizutani and N. Takeda.
  • Organizer: The 6th International Workshop on Structural Heath Monitorig
  • Place of Presentation: Stanford
  • Year and Date: 2007-09-11
• [Presentation] Recent Developments of Optical Fiber Sensor Based SHM Technologies for Aerospace Composite Structures in Japan (2007)
  • Author(s): N. Takeda.
  • Organizer: 6th Int. Workshop on Structural Health Monitoing
  • Place of Presentation: Stanford
  • Year and Date: 2007-09-11
• [Presentation] Shape Identification Using Distributed Strain Data from Embedded Optical Fiber Sensors (2007)
  • Author(s): M. Nishio, T. Mizutalli and N. Takeda.
  • Organizer: International Conference on Composite Materials(ICCM-16)
  • Place of Presentation: 京都
  • Year and Date: 2007-07-09
• [Presentation] Impact Damage Detection on Scarf-Repaired Composites Using Lamb Wave Sensing (2007)
  • Author(s): I. Takahashi, Y. Ito, S. Takeda, Iwahori, J. Takatsubo and N. Takeda.
  • Organizer: International Conference on Composite Materials(ICCM-16)
  • Place of Presentation: 京都
  • Year and Date: 2007-07-09
• [Presentation] Barely Visible Impact Damage Detection in Sandwich Structures Using NNon-Uniform Strain Along Optical Fiber Sensors (2007)
  • Author(s): S. Minakuchi, Y. Okabe and N. Takeda.
  • Organizer: International Conference on Composite Materials(ICCM-16)
  • Place of Presentation: 京都
  • Year and Date: 2007-07-09
• [Presentation] Optical fiber sensor based structural health monitoring of aerospace composite structures (2007)
  • Author(s): N.Takeda
  • Organizer: 4th Int. Conf. on Fatigue of Composites, VW(Invited)
  • Place of Presentation: Kaiserslautern, Germany
• [Presentation] Recent Developments of Optical Fiber Sensor Based SHM Technologies for Aerospace Composite Structures in Japan (2007)
  • Author(s): N.Takeda
  • Organizer: 6th Int. Workshop on Structural Health Monitoring(Invited)
  • Place of Presentation: Stanford University
• [Presentation] Optical fiber sensor based structural health monitoring of aerospace composite Structures (2007)
  • Author(s): N. Takeda.
  • Organizer: 4th Int. Conf. on Fatigue of Composites
  • Place of Presentation: Kaiserslautern, Germany
• [Remarks] ホームページ等
  • URL: http://www.smart.k.u-tokyo.ac.jp
• [Remarks] N. Takeda, Y. Okabe and T. Mizutani,"Damage Detection in Composites Using Optical Fibre Sensors,"Proc. IMechE Part G: J. Aerospace Engineering, Vol. 221, 2007,497-508.
• [Remarks] N. Takeda, "Recent Development of Structural Health Monitoring Technologies for Aircraft Composite Structures", 26th Cong.Inter. Coun. Aeronautical Sci. (ICAS 2008),Sept. 14-19, 2008, Anchorage, AL, USA.
• [Remarks] 武田展雄, "次世代宇宙航空機は「生命体」になる!?", Back Up No.27, 平成20年3月1日発行
• [Remarks] 武田展雄, "皮膚感覚を持つ航空機2020年、実現へ 生命に似た「知的材料なら、損傷が発生してもすぐに感知」", ニュートン ムック, 2006 年6 月20 日発行.
• [Remarks] 武田展雄, "皮膚のように<感じる>知的材料スマートマテリアル", Regional Development News CHIKAI(東京電力地域開発ニュース), 2006 Vol. 292.
• [Remarks]
  • URL: http://www.smart.k.u-tokyo.ac.jp