In this paper, a new online damage detection method is developed using displacement and velocity measurements of the structure. The proposed method is an improved synchronization-based approach in which any changes in system parameters can be measured by synchronizing a mathematical model with the real model of the structure in real time. Several damage scenarios for structures subjected to different seismic ground motion acceleration records are studied to validate the effectiveness of the proposed method. The effect of noise on the performance of the proposed algorithm is also investigated and discussed. Numerical results demonstrate that the proposed technique has the capability of tracking the abrupt changes of stiffness and damping parameters with high accuracy in real time.

中文翻译：

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改进的基于同步的土木结构在线损伤检测方法

在本文中，使用结构的位移和速度测量开发了一种新的在线损伤检测方法。所提出的方法是一种改进的基于同步的方法，其中可以通过将数学模型与结构的真实模型实时同步来测量系统参数的任何变化。研究了受到不同地震地面运动加速度记录的结构的几种损坏情况，以验证所提出方法的有效性。还研究和讨论了噪声对所提出算法的性能的影响。数值结果表明，所提出的技术能够实时、高精度地跟踪刚度和阻尼参数的突变。