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首页> 外文会议>3rd International Workshop on Structural Health Monitoring, Sep 12-14, 2001, Stanford University >Vibration-Based Global Damage Identification ― A Tool for Rapid Evaluation of Structural Safety
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Vibration-Based Global Damage Identification ― A Tool for Rapid Evaluation of Structural Safety

机译：基于振动的整体损伤识别-快速评估结构安全性的工具

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摘要

In contrast to time-consuming and labour-intensive visual inspections or manually performed local NDE methods like ultrasonic testing, one might be interested in an immediate evaluation of the structural health, e.g. after abnormal loading like a seismic event. Vibration-based global monitoring is such a tool: the structure must be equipped with vibration sensors and changes in the vibration signature can be traced back to the location and extent of the damage by solving an inverse problem. In this paper four different model-based approaches are discussed which use mode shapes and eigenfrequencies as measurement information and they are applied to a realistic two-storey structure. An artificial seismic loading caused cracks at different locations. The ability of the methods to find the damage is investigated.
机译：与费时费力的视觉检查或手动执行的本地NDE方法（如超声测试）相反，人们可能会对立即评估结构健康感兴趣，例如对在异常负载（如地震事件）之后。基于振动的全局监视就是这样一种工具：结构必须配备振动传感器，并且通过解决反问题可以将振动特征的变化追溯到损坏的位置和程度。本文讨论了四种不同的基于模型的方法，它们使用模式形状和特征频率作为测量信息，并将它们应用于实际的两层结构。人工地震载荷在不同位置导致裂缝。研究了发现损坏的方法的能力。

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