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Detection of Structural Damage Through Nonlinear Identification by Using Modal Testing

机译：使用模态测试检测通过非线性识别通过非线性识别的结构损伤

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摘要

Structural damages usually introduce nonlinearity to the system. A previously developed nonlinear identification method is employed to detect crack type structural damage. The method requires the measurement of FRFs at various points in order to locate the damage. The method makes it also possible to determine the extent of damage by identifying the level of nonlinearity. The verification of the method is demonstrated with experimental case studies using beams with different levels of cracks. The approach proposed in this study is very promising to be used in practical systems, but still open to further improvements.
机译：结构损坏通常将非线性引入系统。使用先前开发的非线性识别方法来检测裂纹型结构损伤。该方法需要在各个点处测量FRF，以定位损坏。该方法使得可以通过识别非线性水平来确定损坏程度。使用具有不同裂缝水平的梁的实验性案例研究证明了该方法的验证。本研究中提出的方法非常有前途用于实际系统，但仍然可以进一步改进。

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