| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
In this study, we attempted to develop baseline-free structural damage detection systems using chaotic excitation and digital image correlation method.
In the system using chaotic excitation, we succeeded in identifying the structural parameter such as the bending rigidity and the damping ratio by using a merging particle filter. Through the identified structural parameter, it was found that the proposed system makes it possible to quantify the damage. However, the stiffness at the story with damage was overestimated, which means that further improvements to identify the structural parameters are needed for a practical tool.
In the system using digital image correlation method, it was demonstrated from laboratory experiments that response displacement can be measured appropriately by using digital image correlation method and the proposed system makes it possible to detect the damage by evaluating the fractal dimension of the primary mode shape without using any baseline data.
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