| Project/Area Number |
23360055
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Materials/Mechanics of materials
|
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| Research Institution | Setsunan University (2012-2013)
Osaka University (2011) |
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Principal Investigator |
KUBO SHIRO 摂南大学, 理工学部, 教授 (20107139)
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| Co-Investigator(Kenkyū-buntansha) |
SAKAGAMI Takahide 神戸大学, 工学研究科, 教授 (50192589)
IOKA Seiji 大阪電気通信大学, 工学部, 准教授 (50283726)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2013: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
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| Keywords | 非破壊評価 / 破壊力学 / 欠陥同定 / 電気ポテンシャル法 / ピエゾフィルム / スマートマテリアル / パルスエコー法 |
|---|
| Research Abstract |
For assuring integrity of structures, the passive/active defect monitoring inverse analysis method was proposed using flexible piezoelectric smart layer with probe matrix. By the passive electric potential CT (computed tomography) method, which used electric potential appearing passively on piezoelectric film, a part-through three-dimensional crack was identified successfully. The advantage of the use of several piezoelectric films was demonstrated. In the active pulse-echo method, echo emitted actively at a probe was received at several probes. From the time-of-flight of the echo for several combinations of emitting and receiving probes, the crack was identified. When echo interference was observed for echo emitted at two probes, crack identification was made successfully from the difference of emitting time of the echo. The effect of the simultaneous use of the passive and the active methods was identified.
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