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Wavelet transformation of mode shape difference function for structural damage location identification

机译:模态差函数的小波变换用于结构损伤位置识别

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摘要

In this paper, a new approach to structural damage detection is presented using mode shape difference between the reference and damage states. In order to capture and display the signal of damage, wavelet transformation is performed upon the mode shape difference function. Results show that this presentation of signal is effective for damage detection. Furthermore, practical aspects of damage identification are investigated, including understanding and using the frequency contents of the mode shape difference function, the mother wavelet function and the resulting wavelet coefficients due to the band-limited filtering of wavelet transformation. This proposition is experimented. Results are assertive of the proposed concept.
机译:在本文中,提出了一种利用参考状态和损伤状态之间的模态差异来检测结构损伤的新方法。为了捕获并显示损伤信号,对模式形状差函数执行小波变换。结果表明,这种信号表示对于损坏检测是有效的。此外,研究了损伤识别的实际方面,包括理解和使用模式形状差异函数,母小波函数的频率内容以及由于小波变换的带限滤波而导致的小波系数。这个命题是经过实验的。结果证明了所提出的概念。

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