Detection of Gas Transmission Pipeline Corrosion Using Ultrasonic Guided Waves of T(0,1) Mode
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摘要: 介绍了超声导波的频散特性和输气管道腐蚀检测设备的构成，依据管道中导波的T(0,1)模态的非频散特性对低频段(70 kHz以下)反射回波信号进行了动态频率分析。结果表明：该分析方法能够清晰辨别管道特征信号，可以精确定位腐蚀缺陷的位置。但是，由于回波信号的叠加，与较大三通管位于同一截面的腐蚀缺陷信号难以识别。Abstract: As a new non-destructive detection mean, ultrasonic guided-wave technology is more and more widely used in pipeline inspection. The detection devices of ultrasonic guided waves and dispersive characteristics are introduced briefly. Based on the non-dispersion of T(0,1) mode, the reflected signals are analyzed with dynamic frequency in low frequency range(below 70 kHz) . The inspecting results show that the method can clearly identify the feature signals of pipeline and find out the accurate location of corrosion defect. Because of the superposition of reflected signals, the corrosion defects which are in the same section of asymmetric characteristics in pipeline are however difficult to distinguish.
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Keywords:
- Ultrasonic guided waves /
- Pipe /
- Defect /
- Wave analysis
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[1] 中国石油管道公司.油气管道检测与修复技术［M］.北京:石油工业出版社,2010:3-20. [2] 刘镇清.超声无损检测中的导波技术［J］.无损检测,1999,21(8):367-369. [3] 张俊哲.无损检测技术及其应用［M］.北京:科学出版社.2010:195-197. [4] 李隆涛,何存富,吴斌.管道长距离超声导波模态频散现象的抑制方法研究［J］. 数据采集与处理,2004,19(3):297-301. [5] 何存富,李隆涛, 吴斌.超声导波在管道中传播的数值模拟［J］.北京工业大学学报,2004,30(2):129-133. [6] 何存富,刘增华,郑玲瑜，等. 管道导波检测中传感器数量和频率特性研究［J］. 北京工业大学学报,2004,30(4):393-397. [7] 王禹钦,王维斌,陈长坤，等.输气管道超声导波检测技术［J］.无损检测,2008,30(9):617-619. [8] 董为荣,帅健,许葵.管道T(0,1)模态导波检测数值模拟研究［J］.无损检测,2008,30(3): 149-152. [9] 刘增华,吴斌,王秀彦，等. 扭转模态在带黏弹性包覆层管道中缺陷检测的实验研究［J］. 中国机械工程,2009,20(5):564-567. [10] 吴斌,邓菲,何存富.超声导波无损检测中的信号处理研究进展［J］.北京工业大学学报,2007,33(4):342. [11] 蔡桂喜,张双楠,沙高峰，等.管道超声导波长距离检测四线法缺陷信号处理与表征［J］.无损检测,2011,33(增1):4-7. [12] 符浩,王维斌,周进节，等.基于相关的超声导波检测信号分析方法［J］.压力容器,2011,28(7):59-64. [13] KWUN H, KIM S Y, CHOI M S, et al. Torsional Guided-wave Attenuation in Coal-tar-enamel-coated, Buried Piping［J］. NDT&E International,2004,37(8): 663-665.
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