Development of an seismic damage detection technology for civil infrastructures

• Project/Area Number: 20360197
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Ibaraki University
• Principal Investigator: YOKOYAMA Koichi Ibaraki University, 工学部, 教授 (20302325)
• Co-Investigator(Kenkyū-buntansha): WU Zhishen 茨城大学, 工学部, 教授 (00223438) ; HARADA Takao 茨城大学, 工学部, 准教授 (00241745)
• Project Period (FY): 2008 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000); Fiscal Year 2010: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2009: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2008: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
• Keywords: 地震被災診断 / 光ファイバセンサ / 圧電型センサ / モニタリング / 損傷判定

Research Abstract

A novel packaged long-gage FBG (Fiber Bragg Grating) sensor for health monitoring of civil structure has been developed and verified to have the ability to obtain effective macro-strain distributions. Experimental study on application of PVDF (polarized polyvinylidene fluoride) film as a crack detection sensor was conducted to detect occurrence and crack propagation of specimen and RC beams. Moreover, the neural network system which was built based on response information of multiple locations is able to grasp damage location and damage extents in structural health monitoring (SHM) of civil structures.

Research Products

• [Journal Article] Modal macro-strain flexibility methods for damage localization, in flexural structures using long-gage FBG sensors (2011)
  • Author(s): A.P.Adewuyi, Z.S.Wu
  • Journal Title: Structural Control and Health Monitoring Vol.18, Issue 3 Pages: 341-360
  • Peer Reviewed
• [Journal Article] Modal macro-strain flexibility methods for damage localization in flexural structures using long-gage FBG sensors (2011)
  • Author(s): A.P.Adewuyi, Z.S.Wu
  • Journal Title: Structural Control and Health Monitoring Volume: Vol.18, Issue 3 Pages: 341-360
  • Peer Reviewed
• [Journal Article] Health monitoring of flexural steel structures based on distributed fibre optic sensors (2010)
  • Author(s): Suzhen Li, Zhishen Wu, Lili Zhou
  • Journal Title: Structure and Infrastructure Engineering Vol.6, Issue 3 Pages: 303-315
  • Peer Reviewed
• [Journal Article] Parametric estimation for RC flexural structures based on distributed long-gage fiber optic sensors (2010)
  • Author(s): Li S., Wu Z. S.
  • Journal Title: Journal of Structural Engineering, ASCE Vol.136, No.2 Pages: 144-151
  • Peer Reviewed
• [Journal Article] Health monitoring of flexural steel structures based on distributed fibre optic sensors (2010)
  • Author(s): Suzhen Li, Zhishen Wu, Lili Zhou
  • Journal Title: Structure and Infrastructure Engineering Volume: Vol.6, Issue 3 Pages: 303-315
  • Peer Reviewed
• [Journal Article] Parametric estimation for RC flexural structures based on distributed long-gage fiber optic sensors (2010)
  • Author(s): Li, S., Wu, Z.S.
  • Journal Title: Journal of Structural Engineering, ASCE Vol.136, No.2 Pages: 144-151
  • Peer Reviewed
• [Journal Article] Vibration -based structural health monitoring technique using statistical features from strain measurements (2009)
  • Author(s): Adewuyi A.P., Wu Z.S.
  • Journal Title: Journal of Engineering and Applied Sciences Vol.4, No.3 Pages: 38-47
  • Peer Reviewed
• [Journal Article] Sensitivity enhancement of long-gage FBG sensors for Macro-strain measurements (2009)
  • Author(s): Li S., Wu Z.S.
  • Journal Title: Structural Health Monitoring Vol.8, No.6 Pages: 415-423
  • Peer Reviewed
• [Journal Article] Vibration-based structural health monitoring technique using statistical features from strain measurements (2009)
  • Author(s): Adewuyi, A.P., Wu, Z.S.
  • Journal Title: Journal of Engineering and Applied Sciences Vol.4, No.3 Pages: 38-47
  • Peer Reviewed
• [Journal Article] Sensitivity enhancement of long-gage FBG sensors for Macro-strain measurements (2009)
  • Author(s): Li, S., Wu, Z.S.
  • Journal Title: Structural Health Monitoring Vol.8, No.6 Pages: 415-423
  • Peer Reviewed
• [Journal Article] A Model-free Method for Damage Locating and Quantifying in Beam-like Structure based on Dynamic Distributed Strain Measurements (2008)
  • Author(s): Li S., Wu Z.S.
  • Journal Title: Computer-Aided Civil and Infrastructure Engineering Vol.23, No.5 Pages: 404-413
  • Peer Reviewed
• [Journal Article] Modal Analysis on Macro-strain Measurements from Distributed Long-gage Fiber Optic Sensors (2008)
  • Author(s): Li S., Wu Z.S.
  • Journal Title: Journal of Intelligent Material Systems and Structures Vol.19, No.8 Pages: 937-946
  • Peer Reviewed
• [Journal Article] Health Monitoring of Flexural Steel Structures Based on Distributed Fibre Optic Sensors (2008)
  • Author(s): Li, S., Wu, Z. S., and Zhou, L.
  • Journal Title: Structure and Infrastructure Engineering (CD)
  • Peer Reviewed
• [Journal Article] A Model-free Method for Damage Locating and Quantifying in Beam-like Structure based on Dynamic Distributed Strain Measurement (2008)
  • Author(s): Li, S., and Wu, Z. S.
  • Journal Title: Computer-Aided Civil and Infrastructure Engineering Vol.23 No.5 Pages: 404-413
  • Peer Reviewed
• [Journal Article] Modal Analysis on Macro-strain Measurements from Distributed Long-gage Fiber Optic Sensors (2008)
  • Author(s): Li, S., and Wu, Z. S.
  • Journal Title: Journal of Intelligent Material Systems and Structures Vol.19 No.8 Pages: 937-946
  • Peer Reviewed
• [Presentation] 圧電フィルム・センサの繰り返しひずみ耐久性に関する実験的検討 (2010)
  • Author(s): 田名部菊次郎,横山功一,原田隆郎,服部一央
  • Organizer: 第37回土木学会関東支部技術研究発表会
  • Place of Presentation: 日本大学理工学部,東京
• [Presentation] Improvement of typical Damage Identification Techniques Using Dynamic Strain Distribution from Long-Gage FBG Sensors(keynote) (2009)
  • Author(s): Wu Z.S.
  • Organizer: Proceedings of the International Symposium on Innovation & Sustainability of Structures in Civil Engineering
  • Place of Presentation: Guangzhou, China
• [Presentation] Performance of modal macrostrain-flexibility methods for damage localization using long-gage FBG sensors (2009)
  • Author(s): Adewuyi A.P., Wu Z.S.
  • Organizer: 7th International Workshop on Structural Health Monitoring
  • Place of Presentation: Stanford, California, USA
• [Presentation] Structural damage localization using modal macro strain-based flexibility methods with long-gage FBG sensors (2009)
  • Author(s): Adewuyi A.P., Wu Z.S.
  • Organizer: 4th International Conference on Structural Health Monitoring of Intelligent Infrastructure
  • Place of Presentation: Zurich, Switzerland
• [Presentation] Improvement of typical Damage Identification Techniques Using Dynamic Strain Distribution from Long-Gage FBG Sensors (keynote) (2009)
  • Author(s): Wu, Z.S.
  • Organizer: Proceedings of the International Symposium on Innovation & Sustainability of Structures in Civil Engineering
  • Place of Presentation: Guangzhou, China
• [Presentation] Structural Monitoring using Piezoelectric Film (2008)
  • Author(s): Yokoyama K., Harada T
  • Organizer: Proceedings of the 24th US-Japan Bridge Engineering Workshop
  • Place of Presentation: Ninneapolis, Minnesota, USA
  • Year and Date: 2008-09-23
• [Presentation] Development of Bridge Inspection System by Using Wireless Network Technologies (2008)
  • Author(s): Harada T., Yokoyama K.
  • Organizer: The 4th International Workshop on Advanced Smart Materials and Smart Structures Technologies
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2008-06-25
• [Remarks]
  • URL: http://info.ibaraki.ac.jp/scripts/websearch/index.htm
• [Remarks]
  • URL: http://info.ibaraki.ac.jp/scripts/websearch/index.htm