Pulsed Remote Field Eddy Current Simulation of Double-Casing Pipeline Based on Magnetic Field Measurement
-
摘要: 脉冲远场涡流检测技术是一种新兴的电磁无损检测技术。该技术在铁磁性管道检测中发挥着重大作用。目前国内外针对脉冲远场涡流的研究多集中于单层管道,而对双层套管的研究尚存不足。笔者基于有限元仿真,对脉冲远场涡流检测机理进行了系统探究,提出了基于磁场测量的双层套管内外管管壁减薄和局部腐蚀缺陷脉冲远场涡流检测和评估方法。研究发现,在套管内远场区不同位置拾取的脉冲远场涡流磁场信号对内外壁减薄和局部腐蚀缺陷的响应灵敏度存在差异,有利于实现内外管管壁减薄和局部腐蚀缺陷的定位和定量评估。Abstract: Pulsed remote field eddy current testing (PRFEC) is an emerging electromagnetic nondestructive testing (ENDT) technique, which plays a vital role in noninvasive evaluation of ferromagnetic pipeline. The mechanism of PRFEC and PRFEC of wall-thinning as well as localized corrosion in double-casing pipeline is intensively investigated via finite element analysis (FEA). Based on the study, magnetic-field-measurement-based PRFEC of double-casing pipeline is proposed. It has been found that the PRFEC responses acquired at different positions in the remote-field zone to wall-thinning and localized corrosion in internal and external pipe casings are distinguishing, which benefits the localization and quantitative evaluation of wall-thinning and localized corrosion in double-casing pipeline.
-
-
[1] 吴德会,黄松岭,赵 伟,等.油气管道裂纹远场涡流检测的仿真分析[J].中国机械工程,2009,20(12):1450-1454. [2] 杨宾峰,荆毅飞,赵玉丰,等.铁磁性管道脉冲远场涡流无损检测技术[J].计量与技术,2011(1):3-7. [3] 杨理践,王赓,高松巍.基于脉冲远场涡流的管道内检测技术[J].仪表技术与传感器,2012(11):141-144. [4] 张辉,杨宾峰,荆毅飞,等.基于连通磁路的脉冲远场涡流传感器设计及缺陷定量评估与分类识别[J].传感技术学报,2012,25(10):1370-1375. [5] 齐勇,李勇,陈振茂,等.一种新型脉冲涡流提离交汇点的实验研究[J]. 空军工程大学学报(自然科学版),2012,13(6):80-84. [6] 李勇,齐勇,陈振茂,等.基于脉冲涡流差分信号提离交汇点的亚表面层材质劣化检测技术理论研究[J]. 无损检测,2012,34(7):1-10. [7] 齐勇,李勇,陈振茂,等.基于暂态磁场梯度信号的脉冲涡流无损检测和定量评估技术[J]. 无损检测,2011,34(10):3-45. [8] Yong Li, Zhenmao Chen, Yong Qi. Generalized analytical expressions of liftoff intersection in PEC and a liftoff-Intersection-based fast inverse model[J]. IEEE Transactions on Magnetics, 2011,47(10):2931-2934. [9] Yong Li, Yong Qi, Zhenmao Chen, et al. Pulsed eddy current testing based on gradient magnetic field measurement[C].2012 Sixth International Conference on Electromagnetic Field Problems and Applications,2012. [10] 杨宾峰,张辉,荆毅飞,等.基于脉冲激励的远场涡流检测机理及缺陷定量评估技术[J].空军工程大学学报,2012,13(6):45-49.
计量
- 文章访问数: 2
- HTML全文浏览量: 0
- PDF下载量: 0