›› 2016, Vol. 29 ›› Issue (9): 48-.

• 论文 • 上一篇    下一篇

基于超声导波波谱法管道缺陷检测仿真研究

陈志伟,陈凯歌,蒋俊俊   

  1. (江苏大学 机械工程学院,江苏 镇江 212013)
  • 出版日期:2016-09-15 发布日期:2016-09-26
  • 作者简介:陈志伟(1990-),男,硕士研究生。研究方向:管道超声导波无损检测技术。
  • 基金资助:

    江苏省特检院2012年度科技基金资助项目(KJ(Y)2012049)

Simulation of Pipeline Defect Detection By the Ultrasonic Guided Wave Spectrum Method

CHEN Zhiwei, CHEN Kaige, JIANG Junjun   

  1. (School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China)
  • Online:2016-09-15 Published:2016-09-26

摘要:

针对超声导波检测难以准确判定管道缺陷的问题,通过分析超声导波遇管道缺陷后其回波的传播,提出了以波谱法来定位和定量管道缺陷。采用ANSYS软件仿真了T(0, 1)模态超声导波在带缺陷管道中的传播,得到检测的幅值波谱图,发现波谱图中缺陷处的颜色总是最先变化;通过分析所有节点同一时间坐标信号的幅值,发现相对最大缺陷信号幅值,幅值衰减在1/10内的节点数与缺陷的周向尺寸之间存在确定的系数关系。

关键词: 超声导波, 管道缺陷检测, 波谱法, 仿真

Abstract:

It is difficult to accurately determine the pipeline defects using ultrasonic guided wave technology. The propagation of defect wave is analyzed when the ultrasonic guided wave passes through the defect of the pipeline, and a method for determining the defect’s location and size by using the wave spectrum is proposed. ANSYS simulation of the propagation of the T (0, 1) mode ultrasonic guided wave in a pipeline with defects is performed to obtain the amplitude spectrum of the detection. It is found that the color of the defect position is always change first; the coordinate amplitude of the all nodes’ signal at the same time shows that there is a certain coefficient between the number of nodes which the amplitude attenuation below 1/10 and the defect’s circumferential dimension.

Key words: ultrasonic guided wave, pipeline defect detection, wave spectrum method, simulation

中图分类号: 

  • TN911.72