| Budget Amount *help |
¥19,890,000 (Direct Cost: ¥15,300,000、Indirect Cost: ¥4,590,000)
Fiscal Year 2009: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2008: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2007: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
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| Research Abstract |
For monitoring defects and cracks in structures, a smart layer was constructed by combining piezoelectric film and a printed circuit. By using the smart layer the electric potential on the film was measured in the passive electric potential CT method and an acoustic wave was emitted in the active electric potential CT method. By combining these methods with an inverse method, the crack size and location were effectively estimated. Crack shapes were estimated from acoustic wave signals emitted and received from and to electrodes on the smart layer.
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