| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Research Abstract |
In this research, new monitoring system which can detect a crack on U rib in a bridge was proposed. In this system, shock wave being caused by impulse on a road was measured using acceleration sensors on a roed side. Our simulation showed that locations of sensor were very important to detect shock wave. Shock wave was reflected by a crack and arrived at sensors. Our simulation revealed how a shock wave caused by a impulse propagated from asphalt through steel to sensors. Sensor signals were processed by Wavelet analysis and estimated its RMS value. After checking its distribution patter, we could detect a location of a crack.
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