长江科学院院报 ›› 2022, Vol. 39 ›› Issue (11): 154-156.DOI: 10.11988/ckyyb.202106512022

• 仪器设备与测试技术 • 上一篇    下一篇

基于多向场指纹法的金属管道裂纹检测

何晓明1, 周永杰1, 刘润1, 甘芳吉2   

  1. 1.青海师范大学 物理与电子信息工程学院,西宁 810016;
    2.四川大学 机械工程学院,成都 610065
  • 收稿日期:2021-06-27 修回日期:2021-10-09 出版日期:2022-11-01 发布日期:2022-11-14
  • 作者简介:何晓明(1964-),女,青海西宁人,教授,主要从事无损检测技术研究。E-mail:2009014@qhnu.edu.cn
  • 基金资助:
    青海省自然科学基金资助项目(2018-ZJ-719);四川省科技厅科技创新创业苗子工程(2021JDRC0090)

Crack Detection of Metal Pipeline by Using Multi-direction Field Signature Method

HE Xiao-ming1, ZHOU Yong-jie1, LIU Run1, GAN Fang-ji2   

  1. 1. College of Physics and Electronic Information Engineering,Qinghai Normal University,Xining 810016, China;
    2. School of Mechanical Engineering,Sichuan University,Chengdu 610065,China
  • Received:2021-06-27 Revised:2021-10-09 Published:2022-11-01 Online:2022-11-14

摘要: 场指纹技术(Field Signature Method,FSM)是一种广泛应用于金属管道缺陷检测的无损检测技术,能够高精度检测腐蚀缺陷,但对于危险系数更高的裂纹缺陷则检测能力不足。提出了一种多向场指纹法(Multi-direction Field Signature Method,MDFSM),通过向被测管道施加3个方向的激励,可以保证更多角度的裂纹缺陷能被有效检测到,比对后选取最强的1组信号求解裂纹深度。仿真和实验结果表明,所提出的MDFSM能够显著提升裂纹深度的检测精度。

关键词: 缺陷检测, 金属管道, 腐蚀, 裂纹, 多向场指纹法, 激励电流

Abstract: Field signature method (FSM) is a non-destructive testing technology widely used in metal pipeline defect detection. It can detect corrosion defects with high accuracy;but its detection capability for crack defects with higher risk coefficient is insufficient. In this paper,a multi-direction field signature method (MDFSM) is proposed. By applying multi-direction excitation to the tested pipeline,crack defects at more angles can be effectively detected,and the strongest set of signals is selected to solve the crack depth. Simulation and experiments show that the proposed MDFSM significantly improves the accuracy of detecting crack depth.

Key words: defect detection, metal pipeline, corrosion, crack, MDFSM, excitation current

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