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中文摘要：
Lamb波对称模态（SO模态）具有传播速度快、频散小的优点。基于Ansys瞬态动力学分析，模拟了铝板内SO模态的传播过程，并根据有限元模拟的位移云图，分析了损伤对SO模态传播的影响。在此基础上建立环形传感器阵列，通过损伤成像算法对损伤进行检测。
英文摘要：
The symmetric I.amb wave mode SO has the advantages of fast propagation velocity and low dispersion. The propagation of SO mode in plate was simulated using transient dynamic analysis in ANSYS. Based on displacement contour results of finite element method（ FEM）, the affect of through hole damage on SO mode propagation was analyzed. A circular sensor array was built based on the finite element model. The damage was located using the damage image algorithm.
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