| 基于导波能量差的管道缺陷周向定位实验研究 |
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| 引用本文： | 窦林彬,陈志伟,严有琪. 基于导波能量差的管道缺陷周向定位实验研究[J]. 电子科技, 2016, 29(4): 123 |
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| 作者姓名： | 窦林彬 陈志伟 严有琪 |
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| 作者单位： | (1.江苏省特种设备安全监督检验研究院 镇江分院,江苏 镇江 212009;2.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： | 针对超声导波检测需通过对回波信号进行分析而得到管道健康信息,而无法反映缺陷的周向位置信息的问题。文中采用超声导波方法对管道缺陷周向定位进行了研究,分析了超声导波在管道中遇缺陷后的能量分布,以及周向定位的原理。根据F(1,3)模态导波周向波数只有一个的特性,提出了象限能量差定位缺陷方法,并对该方法进行了实验研究,结果表明,方法可以准确地判定出缺陷所在周向位置。
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| 关 键 词： | 超声导波 管道缺陷 周向定位 F 1 3模态 能量分布 |
Experimental Research on Circumferential Localization of Pipeline Defects Based on Guided Wave Energy Difference |
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| DOU Linbin,CHEN Zhiwei,YAN Youqi. Experimental Research on Circumferential Localization of Pipeline Defects Based on Guided Wave Energy Difference[J]. Electronic Science and Technology, 2016, 29(4): 123 |
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| Authors: | DOU Linbin CHEN Zhiwei YAN Youqi |
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| Affiliation: | (1.Zhenjiang Branch,Jiangsu Province Special Equipment Safety Supervision Inspection Institute,Zhenjiang 212009,China;2.School of Mechanical Engineering,Jiangsu University,Zhenjiang 212013,China) |
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| Abstract: | Current ultrasonic guided wave detection can acquire information on the pipepline's health by analyzing the echo signal,but it fails to provide circumferential information on the pipeline defects.This paper studies the circumferential localization of pipeline defects by analyzing the energy distribution of ultrasonic guided waves when they pass through the defect of the pipe and the theory of circumferential localization.The F(1,3) mode guided wave has only one circumferential wave.Based on this fact,we present the quadrant energy difference locating defect method.Experimental results show that this method precisely judges the circumferential position of the defects. |
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| Keywords: | ultrasonic guided wave pipeline defects circumferential localization F1 3 mode energy distribution, |
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