Detection and monitoring of incipient structural damages based on nonlinear electromechanical impedance modulation
| Project/Area Number |
20560218
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Kyoto Institute of Technology |
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Principal Investigator |
SONE Akira Kyoto Institute of Technology, 工芸科学研究科, 教授 (20197015)
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| Co-Investigator(Kenkyū-buntansha) |
MASUDA Arata 京都工芸繊維大学, 工芸科学研究科, 准教授 (90252543)
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| Co-Investigator(Renkei-kenkyūsha) |
IBA Daisuke 京都工芸繊維大学, 工芸科学研究科, 准教授 (10402984)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | モニタリング / 損傷検知 / スマート構造 / き裂検出 / 圧電素子 |
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| Research Abstract |
In this study, a damage detection and monitoring methodology, referred to as "nonlinear piezoelectric impedance modulation method", has been proposed by utilizing the modulation in the electric impedance of a piezoelectric material attached or embedded in a structure due to the contact acoustic nonlinearity at the damaged part. It has been shown that this methodology, developed by combining and advancing two existing approaches, i.e., the piezoelectric impedance method and the nonlinear wave modulation spectroscopy, has a potential to detect incipient contact-type damages such as fatigue cracks and loose bolts sensitively.
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Report
(4 results)
Research Products
(18 results)
