文献类型：期刊文献

中文题名：高阶Lamb波模态在腐蚀损伤处的透射特性分析

英文题名：Transmission characteristics of high order Lamb wave modes at corrosion damages

作者：陈飞宇[1,2];罗志[3];曹徐伟[4]

机构：[1]中国船舶重工集团公司第七一三研究所,郑州450015;[2]河南省水下智能装备重点实验室,郑州450015;[3]华东理工大学机械与动力工程学院,上海200237;[4]杭州电子科技大学机械工程学院,杭州310018

年份：2023

卷号：42

期号：1

起止页码：98

中文期刊名：振动与冲击

外文期刊名：Journal of Vibration and Shock

收录：CSTPCD;;EI(收录号：20230213355970);Scopus;北大核心:【北大核心2020】；CSCD:【CSCD2023_2024】；

基金：国家自然科学基金(52205151);上海市青年英才扬帆计划资助项目(22YF1409900)。

语种：中文

中文关键词：Lamb波;高阶模态;截止特性;单一模态激励;腐蚀损伤

外文关键词：Lamb wave;high order modes;cutoff characteristics;single mode excitation;corrosion damage

摘要：高阶Lamb波模态的截止特性为大面积板壳类结构中腐蚀损伤的检测提供了一种有力的工具。研究高阶Lamb波在不同宽度、深度腐蚀损伤处的透射特性,可以为激励模态、频率的优化提供理论依据。基于有限元方法和单一模态激励技术,分析了略高于截止频率的A1高阶模态穿过腐蚀损伤后到达时间、透射幅值以及波包变形程度的变化,并研究了其随损伤尺寸增大而变化的规律,为探究基于高阶模态的损伤反演奠定了基础。
Cutoff characteristics of high order Lamb wave modes provide a powerful tool for detecting corrosion damages in large-area plate and shell structures.Studying transmission characteristics of high order Lamb wave modes at corrosion damages with different widths and depths can provide theoretical basis for optimizing excitation mode and frequency.Here,based on the finite element method and single mode excitation technology,changes of arrival time,transmission amplitude and wave packet deformation degree after A1 high order modes with frequencies slightly higher than the cutoff frequency passing through corrosion damage were analyzed,and their change laws with increase in damage size were studied to lay a foundation for exploring damage inversion based on high-order Lamb wave modes.