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首页> 外文会议>International conference on sustainable development of critical infrastructure 2014 >Beam Damage Localization Method Considering Random Uncertainty Using Mid-span Displacement Data
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Beam Damage Localization Method Considering Random Uncertainty Using Mid-span Displacement Data

机译：中跨位移数据考虑随机不确定性的梁损伤定位方法

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摘要

Random uncertainty is recognized as one of the main barriers against the application of existing damage detection techniques on actual structures. This paper investigates the damage localization of simply supported beams with original random uncertainty. A new index DIILMSD, which is based on the idea of 'Second Order Pifference of Displacement Influence Line', has been presented. The damage localization method based on DIILMSD has been theoretically discussed and its application to the random uncertain case is studied as a highlight. Numerical example has been conducted to examine the suitability of the method. It is proved that this method can work in the presence of random uncertainty in geometric and material properties, which means that it is suitable for real-world beams. Another significant attraction of this method is that only mid-span displacement measurements are required during the application process of this method.
机译：随机不确定性被认为是阻碍将现有损伤检测技术应用于实际结构的主要障碍之一。本文研究具有原始随机不确定性的简支梁的损伤定位。基于“位移影响线的二阶差异”的思想，提出了一种新的指标DIILMSD。理论上讨论了基于DIILMSD的损伤定位方法，并研究了其在随机不确定情况下的应用。通过数值算例验证了该方法的适用性。事实证明，该方法可以在几何和材料特性存在随机不确定性的情况下工作，这意味着它适用于真实世界的光束。该方法的另一个重要吸引力在于，在该方法的应用过程中，仅需要中跨位移测量即可。

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