EFFECTS ANALYSIS OF PRESSURE ON THE MAGNETIC MEMORY SIGNALS OF PIPELINE DEFECTS

TANG YuLian; CHEN ShiLi; HUANG XinJing; YANG YuHan

doi:10.16579/j.issn.1001.9669.2018.02.009

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EFFECTS ANALYSIS OF PRESSURE ON THE MAGNETIC MEMORY SIGNALS OF PIPELINE DEFECTS

更新时间：2022-09-22

- EFFECTS ANALYSIS OF PRESSURE ON THE MAGNETIC MEMORY SIGNALS OF PIPELINE DEFECTS
- Journal of Mechanical Strength Vol. 40, Issue 2, Pages: 306-311(2018)
- 作者机构：
  
  1. 天津大学精密测试技术及国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.02.009
  CLC：
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TANG YuLian, CHEN ShiLi, HUANG XinJing, et al. EFFECTS ANALYSIS OF PRESSURE ON THE MAGNETIC MEMORY SIGNALS OF PIPELINE DEFECTS. [J]. 40(2):306-311(2018)
DOI：

TANG YuLian, CHEN ShiLi, HUANG XinJing, et al. EFFECTS ANALYSIS OF PRESSURE ON THE MAGNETIC MEMORY SIGNALS OF PIPELINE DEFECTS. [J]. 40(2):306-311(2018) DOI： 10.16579/j.issn.1001.9669.2018.02.009.

摘要

为了分析利用磁记忆检测技术进行管道在线内检测的可行性,需要分析压力对管道缺陷磁记忆信号的影响。在J-A力磁耦合模型基础上得出相对磁导率与应力的数值关系,在Ansys软件中导入相对磁导率与应力的关系进行力学与静磁学联合仿真。研究结果表明:缺陷磁记忆信号有两个特点——径向磁场产生最小值到最大值的突变,轴向磁场出现最大值。在压力作用下管道内部背景磁场减小,缺陷磁记忆信号随着压力增大先减小后保持不变,可以利用磁记忆检测技术进行管道在线内检测。

Abstract

In order to analyze the feasibility of using magnetic memory testing technology to pipeline online inspection,it’s necessary to consider the effect of pressure on the pipeline defects magnetic memory signals. Based on the J-A force-magnetic coupling model a relationship between the relative permeability and stress was concluded. The relationship was imported in ANSYS software to carry out the co-simulation between mechanical and static magnetic. The results show that magnetic memory signals of defects have two characteristics—— radial magnetic field in the pipeline mutating from minimum to maximum and axial magnetic field appearing maximum. The magnetic field inside the pipeline decreases and defect’s magnetic memory signals decreases and then remains constant when the pressure increases. Magnetic memory testing technology can be used in pipeline online inspection.

关键词

压力管道缺陷磁记忆信号力磁耦合Ansys

Keywords

PressurePipelineDefectMagnetic memory signalForce-magnetic couplingANSYS

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