基于COMSOL超声模拟仿真检测管道裂纹缺陷的研究
Research on Detection of Pipeline crack Defects Based on COMSOL Ultrasonic Simulation
杨海聪 1袁浩 1王浩宇 1李瑞祥 1艾柯代·马木提江 1刘莉1
作者信息
- 1. 新疆第二医学院 新疆 克拉玛依 834000
- 折叠
摘要
基于有限元COMSOL数值仿真软件,建立L(0,2)模态超声在管道中的传播模型,开展超声管道裂纹缺陷探伤模拟.通过对管道激励频率的调整,在管道几何模型、缺陷位置和管道材料属性参数不变的情况下,对比管内不同传播介质、不同缺陷走向的管道缺陷裂纹回波电压幅值对应关系,实现针对管道裂纹缺陷的定量分析及对比,揭示超声在管道结构中的传播特征.模拟结果表明:直管道的最佳激励超声频率为 40 kHz,不同传播介质、不同走向缺陷对管道裂纹反射波电压幅值的检测结果影响不大,L(0,2)模态超声导波对径向缺陷检测不敏感,对周向缺陷检测较为敏感.
Abstract
This project is based on the finite element COMSOL numerical simulation software to establish the propagation model of L(0,2)mode ultrasonic in the pipeline and carry out the ultrasonic pipeline crack defect flaw detection simulation.By adjusting the pipeline excitation frequency,under the conditions that the pipeline geometric model,defect location and pipeline material property parameter remain unchanged,the corresponding relationship of the echo voltage amplitude of the pipeline defect crack in different propagation media,different defect orientations in the pipe is compared to realize the quantitative analysis and comparison of the pipeline crack defects and reveal the propagation characteristics of ultrasonic in the pipeline structure.The simulation results show that the optimal excitation ultrasonic frequency for the straight pipeline is 40 kHz,and the detection results of the crack reflection wave voltage amplitude of the pipeline with different propagation media,different orientations Have little influence.The L(0,2)mode ultrasonic guided wave is not sensitive to the radial defect detection and is more sensitive to the circumferential defect detection.
关键词
COMSOL/超声/模拟/管道缺陷/裂纹反射波Key words
COMSOL/Ultrasonic/Simulation/Pipeline defect/Crack reflection wave引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据