A novel damage detection technique of reinforced concrete structure on higher frequency dependency of natural frequency

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Stru ctural health monitoring is expected to be a next generation technology for judging whether a quake-stricken building can be continuously used or not, whose basic principle has been that the dynamic properties change with structural damage in the previous studies. This study experimentally clarifies the changes in resonance frequency of reinforced concrete members due to high-frequency vibration, and also shows that these changes can be a basic principle of structural health monitoring applied even when a p riori data of dynamic properties in the healthy state are not obtained.