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Anomaly Detection with Signal and Image Processing for Structural Health Monitoring

机译:通过信号和图像处理进行异常检测以进行结构健康监测

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It is widely accepted that Structural Health Monitoring (SHM) is a critical component for creating sustainable Civil Infrastructure Systems (CIS). The effectiveness of the data analysis methods used in the SHM system is one of the key factors that determine the success rate of the implementations. Since various types of measurements, e.g. acceleration, strain and image, can be utilized in the SHM systems, different data analysis methods should be developed for extracting useful information from large amounts of data. In this paper, the authors provide a rather general discussion of the critical aspects of SHM in the context of condition assessment and damage detection. A time series analysis based method is investigated for structural damage detection. Moreover, a computer vision based technique is explored for anomaly (or novelty) detection. It is shown that certain algorithms using these approaches can be developed for rapid extraction of information about the changes in the behavior of the structure. Examples from laboratory and real life tests are presented for verification purposes and the performances of these methodologies are discussed in light of the experimental results. Finally, research needs to improve the accuracy and applicability of SHM systems for advancing the sustainable CIS are discussed.
机译:结构健康监测(SHM)是创建可持续的民用基础设施系统(CIS)的关键组成部分,这一点已被广泛接受。 SHM系统中使用的数据分析方法的有效性是决定实施成功率的关键因素之一。由于各种类型的测量,例如可以在SHM系统中利用加速度,应变和图像,应开发不同的数据分析方法以从大量数据中提取有用的信息。在本文中,作者对状态评估和损坏检测中SHM的关键方面进行了较为笼统的讨论。研究了基于时间序列分析的结构损伤检测方法。此外,探索了一种基于计算机视觉的技术来进行异常(或新颖性)检测。结果表明,可以开发出使用这些方法的某些算法,以快速提取有关结构行为变化的信息。给出了来自实验室和现实生活测试的示例,以进行验证,并根据实验结果讨论了这些方法的性能。最后,讨论了提高SHM系统的准确性和适用性以促进可持续CIS的研究需求。

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