Small damage detection of real steel bridge by using local excitation method
Small damage detection of real steel bridge by using local excitation method
复制标题
局部激励法检测实钢桥梁小损伤
DOI：
10.1007/s13349-013-0055-2
复制
发表时间：
2013
影响因子：
4.4
通讯作者：
Maria Fabijanska Kopacz
中科院分区：
文献类型：
--
作者：
Toshiyuki Oshima;Yasunori Miyamori;Shuichi Mikami;Tomoyuki Yamazaki;Sherif Beskhyroun;Maria Fabijanska Kopacz
通过使用压电驱动器，可以对实际钢桥进行局部加速，以检测疲劳裂纹和连接损伤等小损伤对振动变化的影响。响应的功率谱密度(PSD)函数可以给出损伤前后损伤程度的指示。对损伤前后PSD的详细分析可以给出损伤的位置和大小(区域)。本文给出了用局部激励法在实桥上进行损伤识别的实验结果。
By using a piezoelectric actuator, a real steel bridge can be accelerated locally to detect the effect of small damage like fatigue crack and connection damage as a response to change of vibration. Power spectrum density (PSD) function of the response can give us the indication of the extent of damage before and after the damage. Detailed analysis of PSD before and after damage can give us the location and size (area) of damage. This paper shows the experimental result of damage detection by using local excitation method on a real bridge.