Development of a structural damage detection equipment using chaos attractor and relaxation particle filter

• Project/Area Number: 26420470
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Structural engineering/Earthquake engineering/Maintenance management engineering
• Research Institution: Kobe Gakuin University
• Principal Investigator: SATO TADANOBU 神戸学院大学, 現代社会学部, 研究員 (00027294)
• Co-Investigator(Kenkyū-buntansha): 野村 泰稔 立命館大学, 理工学部, 任期制講師 (20372667)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
• Keywords: 地震工学 / 構造ヘルスモニタリング / カオス応答アトラクタ / 緩和型粒子フィルター / 模型実験 / 地震動位相 / フラクタル / 不規則性の同定 / 構造工学 / カオス理論 / アトラクタ / 構造同定 / 緩和型粒子フイルター / 粒子フィルター / 適応・緩和フィルター / 緩和型フィルター / 起振器

Outline of Final Research Achievements

The four research purposes are: developing a new technique by which very minor damage to structure can be detected; developing a technique to determine its damage level precisely; comparing the results of reliability analyses using the identified data not only the developed method but also other common methods; developing an innovative method to detect the fractal nature of earthquake motion phase (EMP).
We propose a new attractor-based structural damage detection technique using chaotic excitation; the particle relaxation filter; a new type of stochastic process being able to represent the stochastic characteristics of EMP by the use of Lubesgue-Stieltjes type integral formula. We compared reliability analyses of two degree of freedom system using identified results by PF, and other six methods. We showed that the result obtained by PF is the most reliable. We identified the probability density function of the group delay time of earthquake motions.

Research Products

• [Journal Article] 粒子フィルターと融合フイルターについて (2016)
  • Author(s): 野村泰稔・吉田行政・珠玖隆行・佐藤忠信
  • Journal Title: 材料 Volume: 65 Pages: 403-408
  • Peer Reviewed
• [Journal Article] 確率過程としてみた地震動位相の不可解性 (2016)
  • Author(s): 佐藤忠信
  • Journal Title: 土木学会論文集A1(構造・地震工学） Volume: 72
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 粒子フィルターと融合粒子フィルターについて (2016)
  • Author(s): 野村泰稔・吉田郁政・珠玖隆行・佐藤忠信
  • Journal Title: 材料,日本材料学会 Volume: 65 Pages: 20-26
  • Peer Reviewed / Open Access
• [Journal Article] 確率過程として見た地震動位相の不可解性 (2016)
  • Author(s): 佐藤忠信
  • Journal Title: 土木学会論文集A1(構造・地震工学) Volume: 72 Pages: 215-228
  • NAID: 130005152725
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Structural damage quantification based of recurrence plot and relaxation method of particle filter (2015)
  • Author(s): Yasutoshi Nomura, Tadanobu Sato and Hitoshi Furuta
  • Journal Title: Proceedings of the 7th ECOMAS thematic Conference of Smart Structures and Materials Volume: 1 Pages: 104-114
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] relaxation method of Monte Carlo filter to vibration –based structural system identification (2015)
  • Author(s): Tadanobu Sato and Yasutoshi Nomura
  • Journal Title: Proceedings of the IV International Conference on Particle-Based Methods. Fyndamentals and Applications, Volume: 1 Pages: 514-516
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] 自己相似則から導出される地震動位相の確率特性と震動振幅の減衰 (2014)
  • Author(s): 佐藤忠信
  • Journal Title: 土木学会論文集A1(構造・地震工学) Volume: ７０(3) Pages: 463-473
  • Peer Reviewed
• [Journal Article] Early-stage Damage Identification Subjected to Chaotic Excitation (2014)
  • Author(s): T. Sato, C.F. Wan, Y. Nomura, L.Y. Xie, R. Song and X.J. Guo
  • Journal Title: Proceedings of 6WCSCM Volume: １ Pages: 1991-2000
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Early-stage damage identification using recursive quantification analysis and merging particle filter, (2014)
  • Author(s): Y. Nomura, T. Sato and C.F. Wan
  • Journal Title: Proceedings of the 10th International Workshop on Advanced Smart Materials and Structures Technology Volume: １ Pages: 29-30
  • Acknowledgement Compliant
• [Presentation] Damage identigication using particle filters (2016)
  • Author(s): Wan, C. and Sato T.
  • Organizer: 6th Asia-Pacific orkshop on Structural Helth Monitoring
  • Place of Presentation: Hobart , Australia
  • Year and Date: 2016-12-06
  • Int'l Joint Research
• [Presentation] 観測記録に見る位相平均勾配の特異な確率特性 (2016)
  • Author(s): 佐藤忠信
  • Organizer: 日本地震工学会大会2016
  • Place of Presentation: 高知工科大学
  • Year and Date: 2016-09-26