Robust damage assessment of multiple cracks based on the Frequency Response Function and the Constitutive Relation Error updating method
Robust damage assessment of multiple cracks based on the Frequency Response Function and the Constitutive Relation Error updating method
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DOI：
10.1016/j.jsv.2007.11.024
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发表时间：
2008-05
影响因子：
4.7
通讯作者：
B. Faverjon;J. Sinou
中科院分区：
文献类型：
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作者：
B. Faverjon;J. Sinou
本文的目的是提出一种损伤评估技术的无损检测和尺寸的多个开放裂纹的梁。将本构关系误差修正法用于简支梁多裂纹位置和尺寸的识别。通过双裂纹和三裂纹的数值算例说明了本文的识别方法。此外，所提出的方法的效率和鲁棒性，通过各种数值模拟方面的无量纲裂纹深度和裂纹位置证明。它表明，本构关系误差更新方法可以检测梁上的裂纹的数量，并可以估计裂纹的位置和尺寸具有令人满意的精度，即使10%或20%的噪声水平已被添加到模拟，只有几个自由度用于识别过程。
The aim of this paper is to present a damage assessment technique for the non-destructive detection and sizing of multiple open cracks in beams. The constitutive relation error updating method is used for the identification of the location and the size of multi-cracks in a simply supported beam. The present identification method is illustrated through numerical examples including double and triple cracks. Moreover, the efficiency and robustness of the proposed method is demonstrated through various numerical simulations in regard to the non-dimensional crack depth and the crack location. It is demonstrated that the constitutive relation error updating method can detect the number of cracks on the beam and can estimate both the crack positions and sizes with satisfactory precision, even if 10% or 20% noise levels has been added to the simulations, and only few degrees of freedom are used for the identification procedure.