| Project/Area Number |
15360459
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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 |
Naval and maritime engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TAKAHASHI Jun The University of Tokyo, Graduate School of Engineering, Associate Professor, 大学院・工学系研究科, 助教授 (10222085)
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| Co-Investigator(Kenkyū-buntansha) |
KAGEYAMA Kazuro The University of Tokyo, Graduate School of Engineering, Professor, 大学院・工学系研究科, 教授 (50214276)
KANEDA Shigehiro The University of Tokyo, Graduate School of Engineering, Assistant Professor, 大学院・工学系研究科, 助手 (90010892)
OHSAWA Isamu The University of Tokyo, Graduate School of Engineering, Assistant Professor, 大学院・工学系研究科, 助手 (00143389)
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| Project Period (FY) |
2003 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥11,200,000 (Direct Cost: ¥11,200,000)
Fiscal Year 2004: ¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2003: ¥7,400,000 (Direct Cost: ¥7,400,000)
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| Keywords | Structural Health Monitoring / Marine Transportation / Water Bag / Fatigue / Damage / Electrical Sensor |
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| Research Abstract |
Recently, many countries in the world are faced with water supply shortage and the situation is getting worse. In order to overcome this situation, a water bag was developed for sea-borne transportation and storage of water. However, it is difficult to detect its damage with conventional sensors, since a water bag is floating in the sea, flexible and more than 100 m long. Then, in this research, we propose a new damage detection technique for a large water bag by the cable theory. The equivalent circuit and a model of the water bag and its environment are considered first. When current is injected into a water bag from an electrode, obvious change of membrane potential is observed between damaged and undamaged water bags both experimentally and theologically. This will provide an easy and economical damage monitoring method for a practical usage.
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