| 基于时间反转法的管道焊缝区缺陷检测研究 |
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| 引用本文： | 高耀东,范要鹏.基于时间反转法的管道焊缝区缺陷检测研究[J].现代制造工程,2021(4):114-120,113. |
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| 作者姓名： | 高耀东 范要鹏 |
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| 作者单位： | 内蒙古科技大学机械工程学院,包头014010 |
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| 基金项目： | 内蒙古自治区自然科学基金项目(2018MS05032)。 |
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| 摘 要： | 焊缝在整个管网系统中是比较薄弱的部分,在温度、压力、介质腐蚀和振动的影响下容易出现裂纹缺陷,对管道的安全运行产生危害,并且有的裂纹很小,通过超声导波不容易直接识别出来。对超声导波检测管道进行了研究,在分析了超声导波对焊缝小缺陷的检测后,提出了一种运用时间反转法基于L(0,2)模态超声导波进行数值模拟的方法,选择4%作为最小焊缝裂纹缺陷,对直管道单焊缝和直管道双焊缝进行数值模拟,并通过实验验证。数值模拟和实验结果表明该方法可以实现管道中焊缝缺陷的识别和定位。
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| 关 键 词： | 管道 焊缝 时间反转法 L(0 2)模态 缺陷 |
Research on defect detection in welding seam zone of pipe based on time reversal method |
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| GAO Yaodong,FAN Yaopeng.Research on defect detection in welding seam zone of pipe based on time reversal method[J].Modern Manufacturing Engineering,2021(4):114-120,113. |
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| Authors: | GAO Yaodong FAN Yaopeng |
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| Affiliation: | (College of Mechanical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China) |
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| Abstract: | The welding seams are relatively weak in the whole pipe network system,the crack defects are easy to form under the influence of temperature,pressure,medium corrosion and vibration,which will cause harm to the safe operation of pipelines.In addition,some cracks are very small and cannot be directly identified by ultrasonic guided wave.Ultrasonic guided wave detection of pipeline was studied,the analysis of the ultrasonic guided wave for small welding defect detection,a method of numerical simulation based on L(0,2)modal ultrasonic guide wave using time reversal method was proposed,choosing 4%as the minimum welding crack defects.Single and pairs of straight pipe welding seam were carried on the numerical simulation,and tested with experiments.Numerical simulation and experimental results show that this method can be used to identify and locate welding seams defect in pipelines. |
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| Keywords: | pipe welding seam time reversal method L(0 2)mode defect |
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