Damage identification in a lightly reinforced concrete beam based on changes in the power spectral density
Damage identification in a lightly reinforced concrete beam based on changes in the power spectral density
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DOI：
10.1080/15732471003730674
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发表时间：
2012-08
影响因子：
3.7
通讯作者：
Rathish P. Kumar;T. Oshima;S. Mikami;Y. Miyamori;T. Yamazaki
中科院分区：
文献类型：
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作者：
Rathish P. Kumar;T. Oshima;S. Mikami;Y. Miyamori;T. Yamazaki
本文论述了用动态测试方法检测轻筋混凝土梁的损伤。提出了一种基于功率谱密度（PSD）变化的算法。将该算法用于钢筋混凝土梁的损伤检测、损伤位置预测和损伤程度评估。该方法是基于梁上的测量数据后，在突出位置引入一些损伤。一个可调的压电致动器被用来产生额外的峰值在频域中的系统的动态响应。通过调谐致动器在频带上调整这些附加峰值。结果表明，PSD方法能够检测损伤，确定损伤位置，并能监测损伤的增长
This paper deals with the detection of damage in a lightly reinforced concrete beam using dynamic measurements. An algorithm based on changes in the power spectral density (PSD) is presented. The algorithm is used to detect damage, predict the location and assess the extent of damage in the reinforced concrete beam. The method is based on the measured data on the beam after introducing some damage at salient locations. A tuneable piezoelectric actuator was used to produce additional peaks in the dynamic response of the system in the frequency domain. These additional peaks were adjusted over the frequency band by tuning the actuator. It was noticed from the results, that the PSD method detected the damage, determine the location and could monitor the increase in damage in the beam