| 基于连续小波变换的输油管道裂纹缺陷漏磁检测研究 |
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| 引用本文： | 宋志强,李著信,张镇,姜玉泉.基于连续小波变换的输油管道裂纹缺陷漏磁检测研究[J].化工自动化及仪表,2010,37(7):35-39. |
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| 作者姓名： | 宋志强 李著信 张镇 姜玉泉 |
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| 作者单位： | 后勤工程学院,重庆,401311 |
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| 基金项目： | 总后勤部项目《输油管道剩余寿命预测技术及装备研究》基金 |
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| 摘 要： | 在分析埋地输油管道裂纹漏磁检测现状的基础上,研究了连续小波变换能量法在管道裂纹漏磁检测信号处理上的应用。设计了裂纹缺陷漏磁检测实验方案,利用连续小波变换分析了裂纹缺陷不同特征参量(长度和深度)对漏磁检测信号的影响,得出了不同特征参量的裂纹漏磁信号的连续小波变换能量变化图谱,表明了漏磁检测信号特征与裂纹缺陷之间有特定的定量关系及用漏磁方法检测裂纹缺陷存在着一定的局限性。
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| 关 键 词： | 管道检测 裂纹缺陷 连续小波变换 漏磁检测 |
Research on MFL Testing of Oil Pipeline Crack Flaw Detection Based on Continuous Wavelet Transform |
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| SONG Zhi-qiang,LI Zhu-xin,ZHANG Zhen,JIANG Yu-quan.Research on MFL Testing of Oil Pipeline Crack Flaw Detection Based on Continuous Wavelet Transform[J].Control and Instruments In Chemical Industry,2010,37(7):35-39. |
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| Authors: | SONG Zhi-qiang LI Zhu-xin ZHANG Zhen JIANG Yu-quan |
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| Affiliation: | (Logistics Engineering University,Chongqing 401311,China) |
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| Abstract: | In the basis of research on buried-oil pipeline crack flaw testing in MFL nondestructive examination testing,MFL nondestructive testing signal processing in oil pipeline crack flaw detection based on continuous wavelet transform energy methods were presented.Experiment of MFL crack flaw testing was designed to analysis that the various characteristics parameter（length and depth） had effect to MFL nondestructive signal pattern,verified the connection between MFL signal and variation trend of continuous wavelet transform energy figure.The conclusion shows the pipeline crack flaw testing limitations with MFL nondestructive testing,and testifies the special quantitative connection between MFL testing signal character and crack flaw exists. |
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| Keywords: | pipeline detection crack flaw continuous wavelet transform magnetic flux leakage testing |
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