Development of SHM System for Long Term Monitoring of Adhesively Bonded Structures

• Project/Area Number: 24560115
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Ritsumeikan University
• Principal Investigator: KUSAKA Takayuki 立命館大学, 理工学部, 教授 (10309099)
• Co-Investigator(Kenkyū-buntansha): NOMURA Yasutoshi 立命館大学, 理工学部, 任期制講師 (20372667)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 機械材料・材料力学 / 損傷力学 / ヘルスモニタリング

Outline of Final Research Achievements

The effects of applied force on piezo-electric properties of PZT transducers were studied to improve the long term reliability of PZT transducers. A SHM system for CFRP adhesively bonded structures was proposed using the newly developed PZT transducers and diagnostic software.
The results suggested that the microscopic damages of PZT transducers caused by applied force could be reduced by stress shielding plates with thermal residual stress. The internal damages induced in adhesive layer could be quantitatively evaluated using the scalar index based on the dispersion of Lamb waves.

Research Products

• [Journal Article] 画像相関法とフラクタル次元解析を用いたBaseline-free損傷検出法 (2013)
  • Author(s): 野村泰稔, 古田均, 日下貴之, 吉田和世, 石橋健
  • Journal Title: 土木学会論文集Ａ２ Volume: 69
  • NAID: 130004557395
  • Peer Reviewed
• [Journal Article] カオス応答アトラクタのリカレンスプロットに基づく構造物の損傷位置同定 (2013)
  • Author(s): 野村泰稔, 森本大貴, 日下貴之, 古田均
  • Journal Title: 日本機械学会論文集C編 Volume: 79 Pages: 209-221
  • NAID: 130003386479
  • Peer Reviewed
• [Journal Article] 非接触変位場計測によるコンクリート構造物のき裂検出システムの開発 (2013)
  • Author(s): 日下貴之, 野村泰稔, 日根野陽介, 久木祥兵
  • Journal Title: 土木学会論文集Ｆ６ Volume: 69
  • NAID: 130004560183
  • Peer Reviewed
• [Presentation] Development of Crack Detection System Based on DIC Method Using Flexible Nodes Arrangement (2015)
  • Author(s): Sota Oshima, Takayuki Kusaka, Ryota Tanegashima
  • Organizer: 8th International Symposium on Nanostructures
  • Place of Presentation: 立命館大学（京都府・京都市）
  • Year and Date: 2015-03-03
• [Presentation] Improvement of Accuracy of Crack Detection System for Concrete Structures Using Non-contact Displacement Measurement (2014)
  • Author(s): Sota Oshima, Takayuki Kusaka, Ryota Tanegashima
  • Organizer: 3rd International Symposium on Functionalization and Applications of Soft/Hard Materials
  • Place of Presentation: 立命館大学（滋賀県・草津市）
  • Year and Date: 2014-11-08
• [Presentation] 融合粒子フィルタに基づくデータ同化技術を利用した構造同定と未観測データの取得 (2014)
  • Author(s): 野村泰稔, 寺元丈雄, 日下貴之
  • Organizer: 日本材料学会第63期学術講演会
  • Place of Presentation: 福岡大学（福岡県・福岡市）
  • Year and Date: 2014-05-18
• [Presentation] Structural Health Monitoring Based on Chaotic Excitation and Recurrence Quantification Analysis
  • Author(s): Yasutoshi Nomura, Takayuki, Kusaka, Daiki Morimoto
  • Organizer: 11th International Conference on Structural Safety and Reliability
  • Place of Presentation: New York, USA
• [Presentation] Crack Growth Detection for Concrete Structures Based on Non-contact Displacement Measurements
  • Author(s): Takayuki Kusaka, Yasutoshi Nomura, Yosuke Hineno, Toshifumi Fujii
  • Organizer: 11th International Conference on Structural Safety and Reliability
  • Place of Presentation: New York, USA
• [Presentation] Baseline-less Structural Health Monitoring System Based on Recurrence Quantification Analysis
  • Author(s): Nomura, Y., Kusaka, T., Morimoto, D., Furuta, H.
  • Organizer: 7th International Conference on Bridge Maintenance, Safety and Management
  • Place of Presentation: Stresa, Italy
• [Presentation] カオス応答アトラクタの評価に基づく構造異常診断
  • Author(s): 三木啓史, 野村泰稔, 日下貴之
  • Organizer: 日本機械学会関西支部第88期定時総会講演会
  • Place of Presentation: 大阪工業大学（大阪府）