Self-Sensing and Damping Using Functional Gels for Application to Precision Mechanical Equipment

• Project/Area Number: 25420207
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Intelligent mechanics/Mechanical systems
• Research Institution: Akita University
• Principal Investigator: Shibuya Yotsugi 秋田大学, 理工学研究科, 教授 (00154261)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 機能性材料 / 粘弾性 / Fractional Calculus / 動的応答 / 非線形特性 / 機能性ゲル / 非線形 / 粘弾性体 / Fractional Calculas / 周波数応答 / 制振 / センサ / 電気伝導性 / 精密位置決め

Outline of Final Research Achievements

Conductive gels and magneto-rheological gels are investigated to clarify possibility as functional gels for self-sensing and damping. The conductive gel is one of candidates for strain sensor. Damage detection on a composite structure with a hole is performed to make validation of the sensor network with the conductive gel. A fractional calculus model is proposed to evaluate nonlinear rheological properties of the gel under magnetic fields. Properties of the gel are evaluated on the basis of micromechanical model. It is suggested that other interaction between viscoelastic and magnetic effects exists in the phenomenon.

Research Products

• [Presentation] Viscoelastic Homogenization Approach for Creep Compliance of Carbon Fiber Reinforced Composites Using Fractional Calculus (2016)
  • Author(s): Yotsugi Shibuya
  • Organizer: The National Science and Technology Conference on Mechanical - Transportation Engineering (NSCMET 2016)
  • Place of Presentation: Hanoi, Vietnam
  • Year and Date: 2016-10-13
  • Int'l Joint Research
• [Presentation] 円孔近傍に損傷を有する複合材料の損傷検出のためのひずみ応答解析 (2016)
  • Author(s): 坪田 竹志， 渋谷 嗣
  • Organizer: 日本機械学会東北支部第52期秋季講演会
  • Place of Presentation: 秋田
  • Year and Date: 2016-09-17
• [Presentation] Fractional Derivative Model of Polymer Matrix for Evaluation of Creep Properties of CFRP (2016)
  • Author(s): Yotsugi Shibuya
  • Organizer: The 12th China-Japan Joint Conference on Composite Materials
  • Place of Presentation: Kochi, Japan
  • Year and Date: 2016-09-16
  • Int'l Joint Research / Invited
• [Presentation] Evaluation of Nonlinear Damping Properties of Magneto-Rheological Gels Using Fractional Calculus (2015)
  • Author(s): Yotsugi Shibuya
  • Organizer: ASME, SMASIS 2015
  • Place of Presentation: Colorado Springs, U.S.A.
  • Year and Date: 2015-09-21 – 2015-09-23
• [Presentation] ひずみ分布計測のための導電性エラストマーの電気特性評価 (2014)
  • Author(s): 渋谷 嗣
  • Organizer: 日本機械学会M&M2014材料力学カンファレンス
  • Place of Presentation: 福島大学
• [Presentation] Evaluation of Nonlinear Damping Properties of Magnetorheological Gel under Shear Loading
  • Author(s): Yotsugi Shibuya
  • Organizer: The 2013 ASME Pressure Vessels & Piping Conference
  • Place of Presentation: Paris Marriott Rive Gauche Hotel & Conference Center, Paris, France