[1]邱公喆,康宜华,程偲,等.连续油管分层缺陷磁导率扰动电磁检测方法与检测系统[J].焊管,2023,46(5):36-43.[doi:10.19291/j.cnki.1001-3938.2023.05.006]
 QIU Gongzhe,KANG Yihua,CHENG Si,et al.Method and System of Magnetic Permeability Perturbation Detection for Delaminations in Coiled Tubing[J].,2023,46(5):36-43.[doi:10.19291/j.cnki.1001-3938.2023.05.006]
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连续油管分层缺陷磁导率扰动电磁检测方法与检测系统()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
46
期数:
2023年第5期
页码:
36-43
栏目:
应用与开发
出版日期:
2023-05-28

文章信息/Info

Title:
Method and System of Magnetic Permeability Perturbation Detection for Delaminations in Coiled Tubing
文章编号:
10.19291/j.cnki.1001-3938.2023.05.006
作者:
邱公喆康宜华程偲姜春
华中科技大学 机械科学与工程学院,武汉 430074
Author(s):
QIU Gongzhe KANG Yihua CHENG Si JIANG Chun
School of Mechanical Science and Engineering, Huazhong University of Science and Technology,Wuhan 430074, China
关键词:
连续油管板材分层检测检测方法磁导率扰动
Keywords:
coiled tubing plate delamination inspection detection method magnetic permeability perturbation
分类号:
TG115.28
DOI:
10.19291/j.cnki.1001-3938.2023.05.006
文献标志码:
B
摘要:
板材的分层缺陷检测通常采用超声测厚法实现,但超声测厚法对近表层检测存在盲区,且高速检测系统复杂、成本高。本研究提出一种连续油管分层缺陷的磁导率扰动电磁检测新方法,并设计了相应的检测系统。该系统利用永磁体沿钢管或钢板的法向施加磁力,管板内分层产生内部磁场的畸变,进而引起局部区域的磁导率扰动,这一扰动沿厚度方向传递到表层,在空间上差动的涡流探头测量表层磁导率的相对变化,即可实现内部分层缺陷的检测与评估。从机理上阐明了分层缺陷的埋深对测点处相对磁导率变化的影响;随后,基于有限元模型研究了分层的长度、埋深、分层厚度等因素引起的测点处磁导率变化;最后,试验验证了理论分析和仿真结果的有效性。
Abstract:
Detection of delaminations in plates is usually realized by ultrasonic thickness measurement, but there are blind areas in near?urface layer, and the high?peed detection system is complex and costly. A new method of magnetic permeability perturbation electromagnetic detection of delaminations in coiled tubing is proposed, and a corresponding detection system is designed. Using a permanent magnet to apply magnetic force along the normal direction of the steel plate, the delamination within the plate produces internal magnetic field distortion, which in turn causes magnetic permeability perturbation in the local area. The perturbation is transmitted to the surface along the thickness direction. The detection and evaluation of internal delaminations can be achieved by measuring the relative change of magnetic permeability on the surface layer with a differential eddy current probe. The effect of the burial depth of the delamination on the relative permeability change at the measurement point is mechanically elucidated; subsequently, the magnetic permeability change at the measurement point due to the length, burial depth, and thickness of the delamination is investigated based on the finite element model; finally, the validity of the theoretical analysis and simulation results is experimentally verified.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2022-04-06作者简介:邱公喆(1992—),男,博士在读,研究方向为金属材料无损检测。
更新日期/Last Update: 2023-05-23