电工技术学报2017，Vol.32Issue(22)：144-151,8.DOI:10.19595/j.cnki.1000-6753.tces.160439
电磁超声管道周向兰姆波仿真分析及缺陷检测特性研究
Research on Simulation Analysis of Electromagnetic Ultrasonic Circumferential Lamb Waves and Defect Feature Detection in Pipeline
摘要
Abstract
According to the symmetrical characteristics of pipeline circumferential Lamb waves (CLamb waves), the propagation characteristics of CLamb waves were studied by finite element simulation and the propagation regularities of CLamb0 and CLamb1 mode were obtained. Based on the research of Lamb acoustic field characteristics, the pipeline model with rectangular flaw was established. The characteristics of CLamb waves extracted on both sides of the defect were simulated. Meanwhile the mode conversion of the CLamb waves because of the impact of the defect was studied. The relationships between the flaw size, depth and the amplitude of the reflection and transmission waves were obtained, which laid a foundation for quantitative test of pipe crack defects. Finally, experiments detecting the aluminum pipeline with different defects were conducted to verify the results of FEM.关键词
周向兰姆波(CLamb波)/有限元仿真/缺陷响应特性/模式转换Key words
Circumferential Lamb wave/finite element simulation/response characteristic of the defect/mode conversion分类
通用工业技术引用本文复制引用
刘素贞,张严伟,张闯,金亮,杨庆新..电磁超声管道周向兰姆波仿真分析及缺陷检测特性研究[J].电工技术学报,2017,32(22):144-151,8.基金项目
国家自然科学基金(51077036,51307043)、河北省自然科学基金(E2016202260)和天津市自然科学基金(16JCYBJC19000)资助项目. （51077036,51307043）
