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arXiv · 2106.00642

Effect of symmetry defect on the edge resonance of semi-infinite FGM plates

Shengyu Tang·Wenping Bi·Jingwei Yin·Vincent Pagneux
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Abstract

The effect of asymmetric functionally graded material on the edge resonance and the Fano resonance in semi-infinite FGM plates are reported in this work. The edge resonance is weakened by the material perturbation and the complete mode conversion is illustrated with incident $S_0$ mode. The Fano resonance occurs on the reflected $A_0$ mode as a result of interference between the resonance and direct scattering with incident $A_0$ mode. A hybrid analytical model based on the collocation discretization and the modal decomposition of the elastic field is developed to analyze the scattering properties of the semi-infinite plates. The Fano line-shape is discussed in detail. The results show that the Fano line shape is sensitive to the volume fraction, which is beneficial for the quantitative guided wave application.

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Shengyu Tang, Wenping Bi, Jingwei Yin, Vincent Pagneux. 2021-06-01. Effect of symmetry defect on the edge resonance of semi-infinite FGM plates. https://arxiv.org/abs/2106.00642

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