管道衰减系数对超声导波检测距离的影响
Effect of Pipeline Attenuation Coefficient on Ultrasonic Guided Wave Inspection Range
摘 要
采用磁致伸缩超声导波技术对管道衰减系数与导波检测距离的关系进行了研究，针对不同埋设环境、不同衰减系数的管道，合理评估导波检测距离及检测成本，减少复杂环境下导波检测性能降低导致的检测费用增加、检测工期延长等问题的出现，从而更加合理地编制导波检测方案。首先对衰减系数与检测距离的关系进行了初步探讨，根据检测缺陷大小和衰减系数可计算出导波的检测距离；然后分别对地上管道、半埋地管道、埋地管道进行导波检测。检测结果表明，高衰减对导波检测距离有强烈的影响，不同埋设环境的管道，导波的衰减系数及检测距离有明显的差异。
埋地管道
检测
衰减系数
灵敏度
Guided wave
Buried pipeline
Inspection
Attenuation coefficient
Sensitivity
Abstract
The effect of attenuation on inspection range was studied experimentally by using the magnetostrictive ultrasonic guided wave technology, aiming to help the pipeline manager to assess the rang of inspection and the price of inspection, and to make proper inspection plan before carry out guided wave test, because the pipelines in complicated surroundings can cost more inspection time and inspection price. First, the relationship between attenuation and inspection range had been researched, then the range of inspection under known value of attenuation coefficient could be calculated. Three pipeline inspection experiments were undertaken in different surroundings (above ground pipeline, half-buried pipeline and buried pipeline). The experimental result shows that high attenuation strongly affects the range of inspection and a significant change in the attenuation coefficient and inspection range exists for different surroundings.
中图分类号 TG115.28 DOI 10.11973/wsjc201701015
所属栏目 实践经验
基金项目
收稿日期 2016/6/22
修改稿日期
网络出版日期
作者单位点击查看
联系人作者刘争(541732847@qq.com)
备注刘争(1981-),男,工程师,主要从事管道完整性专业方向的研究工作。
引用该论文: LIU Zheng,LI Yang. Effect of Pipeline Attenuation Coefficient on Ultrasonic Guided Wave Inspection Range[J]. Nondestructive Testing, 2017, 39(1): 61～65
刘争,李扬. 管道衰减系数对超声导波检测距离的影响[J]. 无损检测, 2017, 39(1): 61～65
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参考文献
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【4】ALLEYNE D N, LOWE M J S, CAWLEY P. The reflection of guided waves by a part-circumferential notchina pipe[J].Journal of Applied Mechanics, 1998, 65(3):635-641.
【5】DEMMA, CAWELY P, LOWE M A,et al. The reflection of the fundamental torsional mode from cracks and notches in pipes[J]. J. Acoust. Soc. Am,2003,114(2):611-625.
【6】KWUN H,KIM S Y,CHOI M S,et al. Torsional guided-wave attenuation in coaltar-enamel coated, buried piping[J]. NDT&E International,2004, 37:663-665.
【7】孙士彬,孙乾耀.采用超声导波技术对埋地管道进行腐蚀缺陷的检测[J].无损检测,2007,29(4):6-9.
【8】ALLEYNE D N, CAWLEY P. Optimization of Lamb wave inspection techniques[J].Ndt & E International, 1992, 25(1):11-22.
【9】KWUN H, ARTELS K A. Magnetostrictive sensor technology and its applications[J]. Ultrasonics,1998,36:171-178.
【10】KWUN H,KIM S Y,CHOI M S. Reflection of the fundamental torsional wave from a stepwise thickness change in a pipe[J].Journal of the Korean Physical Society,2005,46(6):1352-1357.
【2】LOWE M J S, ALLEYNE D N, CAWLEY P. The mode conversion of guided waves by a part-circumferential notch in a pipe[J].Journal of Applied Mechanics,1998, 65(3):649-656.
【3】DEMMA A, CAWLEY P, LOEW M J S.The reflection of the fundamental torsional mode from cracks and notches in pipes[J]. Springer Vienna, 2003, 114(2):611-25.
【4】ALLEYNE D N, LOWE M J S, CAWLEY P. The reflection of guided waves by a part-circumferential notchina pipe[J].Journal of Applied Mechanics, 1998, 65(3):635-641.
【5】DEMMA, CAWELY P, LOWE M A,et al. The reflection of the fundamental torsional mode from cracks and notches in pipes[J]. J. Acoust. Soc. Am,2003,114(2):611-625.
【6】KWUN H,KIM S Y,CHOI M S,et al. Torsional guided-wave attenuation in coaltar-enamel coated, buried piping[J]. NDT&E International,2004, 37:663-665.
【7】孙士彬,孙乾耀.采用超声导波技术对埋地管道进行腐蚀缺陷的检测[J].无损检测,2007,29(4):6-9.
【8】ALLEYNE D N, CAWLEY P. Optimization of Lamb wave inspection techniques[J].Ndt & E International, 1992, 25(1):11-22.
【9】KWUN H, ARTELS K A. Magnetostrictive sensor technology and its applications[J]. Ultrasonics,1998,36:171-178.
【10】KWUN H,KIM S Y,CHOI M S. Reflection of the fundamental torsional wave from a stepwise thickness change in a pipe[J].Journal of the Korean Physical Society,2005,46(6):1352-1357.
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