| 基于超声导波波谱法管道缺陷检测仿真研究 |
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| 引用本文： | 陈志伟,陈凯歌,蒋俊俊.基于超声导波波谱法管道缺陷检测仿真研究[J].电子科技,2016,29(9):48. |
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| 作者姓名： | 陈志伟 陈凯歌 蒋俊俊 |
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| 作者单位： | （江苏大学 机械工程学院，江苏 镇江 212013） |
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| 基金项目： | 江苏省特检院2012年度科技基金资助项目（KJ(Y)2012049） |
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| 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。
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| 关 键 词： | 超声导波 管道缺陷检测 波谱法 仿真 |
Simulation of Pipeline Defect Detection By the Ultrasonic Guided Wave Spectrum Method |
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| CHEN Zhiwei,CHEN Kaige,JIANG Junjun.Simulation of Pipeline Defect Detection By the Ultrasonic Guided Wave Spectrum Method[J].Electronic Science and Technology,2016,29(9):48. |
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| Authors: | CHEN Zhiwei CHEN Kaige JIANG Junjun |
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| Affiliation: | (School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China) |
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| 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. |
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| Keywords: | ultrasonic guided wave pipeline defect detection wave spectrum method simulation |
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