Design of a New Pulsed Eddy Current Sensor for Detection of Corrosion in Pipeline
摘 要
提出了一种新型脉冲涡流传感器设计思路。它将脉冲涡流激励场从空间上转化为匀强涡流场,从而等效为一种自差分式的涡流检测技术,因此无需进行差分处理,可避免差分信号的不同步导致的检测精度和灵敏度不高。采用该新型脉冲涡流传感器对钢管腐蚀缺陷进行了检测,试验结果表明设计的传感器具有较高的灵敏度和检测精度。
Abstract
A new self-differential pulsed eddy current testing sensor was designed to avoid low precision and sensitivity of differential sensor. It was designed based on the principle of that the exciting field is transformed into a uniform eddy current field. Testing experiment showed that the new sensor was useful to test corrosion defects on the surface of the steel pipeline and it was excellent on validity and applicability.
中图分类号 TG115.28
所属栏目 科研成果与学术交流
基金项目 国家科技支撑计划资助项目(2006BAK02B02)
收稿日期 2007/11/17
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备注王韫江(1982-),男,硕士研究生,主要从事测试计量技术及仪器研究。
引用该论文: WANG Yun-Jiang,WANG Xiao-Feng,LI Bin,YU Fu-Ping,DING Ke-Qin. Design of a New Pulsed Eddy Current Sensor for Detection of Corrosion in Pipeline[J]. Nondestructive Testing, 2008, 30(11): 807~808
王韫江,王晓锋,李 斌,余付平,丁克勤. 管道腐蚀检测中新型脉冲涡流传感器的设计[J]. 无损检测, 2008, 30(11): 807~808
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参考文献
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【2】Tian G Y, Sophian A. Study of magnetic sensors for pulsed eddy current techniques[J]. Insight,2005,47(5):277-279.
【3】杨宾峰,罗飞路,曹雄恒,等.飞机结构腐蚀检测中的脉冲涡流无损检测技术[J].测试技术学报,2005,19(1):27-29.
【4】Binfeng Yang, Feilu Luo, Dan Han. Pulsed eddy current technique used for non-destructive inspection of ageing aircraft[J]. Insight,2006,48(7):411-414.
【5】陈建忠,史耀武.无损检测交变磁场测量法[J].无损检测,2001,23(3):96-99.
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