Finite Element Modelling of Circumferential Magnetic Flux Leakage Inspection in Pipeline

摘要：

The axial magnetic flux leakage(MFL) inspection tools cannot reliably detect or size axially aligned cracks, such as SCC, longitudinal corrosion, long seam defects, and axially oriented mechanical damage. To focus on this problem, the circumferential MFL inspection tool is introduced. The finite element (FE) model is established by adopting ANSYS software to simulate magnetostatics. The results show that the amount of flux that is diverted out of the pipe depends on the geometry of the defect, the primary variables that affect the flux leakage are the ones that define the volume of the defect. The defect location can significantly affect flux leakage, the magnetic field magnitude arising due to the presence of the defect is immersed in the high field close to the permanent magnets. These results demonstrate the feasibility of detecting narrow axial defects and the practicality of developing a circumferential MFL tool.

关键词： Pipeline Magnetic flux leakage inspection(MFL) Circumferential MFL Finite element modeling Simulate

作者: Zhang Guoguang Liu Jing

作者单位: School of Information Engineering Shenyang Institute Of Chemical Technology, SYICT Shenyang, China

会议类型: 国际会议

会议名称: 2010 International Conference on Intelligent Computation Technology and Automation(2010 智能计算技术与自动化国际会议 ICICTA 2010)

会议地点: 长沙

会议语种:英文

页码: 1497-1500

在线出版日期: 2010-05-11（万方平台首次上网日期，不代表论文的发表时间）