| Lamb波损伤散射及损伤成像的模拟 |
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| 引用本文： | 李鸿源,徐鸿,田振华. Lamb波损伤散射及损伤成像的模拟[J]. 无损检测, 2012, 0(9): 12-15,26 |
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| 作者姓名： | 李鸿源 徐鸿 田振华 |
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| 作者单位： | 华北电力大学能源动力与机械工程学院,北京102206 |
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| 基金项目： | 国家自然科学基金资助项目（11074073）;国家自然科学基金和神华集团有限公司联合资助项目（51134016）;中央高校基本科研业务费专项资金资助项目 |
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| 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。
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| 关 键 词： | Lamb波 SO模态 有限元模拟 损伤检测 |
Detection of Damages in Plates Based on Symmetric Lamb Waves |
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| LI Hong-Yuan,XU Hong,TIAN Zhen-Hua. Detection of Damages in Plates Based on Symmetric Lamb Waves[J]. Nondestructive Testing, 2012, 0(9): 12-15,26 |
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| Authors: | LI Hong-Yuan XU Hong TIAN Zhen-Hua |
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| Affiliation: | (School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China) |
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| Abstract: | 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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| Keywords: | Lamb wave SO mode Finite element simulation Damage detection |
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