• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2022, Vol. 58 ›› Issue (16): 153-159.doi: 10.3901/JME.2022.16.153

• 仪器科学与技术 • 上一篇    下一篇

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交流电磁场和电磁超声复合无损检测技术研究

李伟1, 邵鑫宇1, 张伯莹2, 袁新安1, 殷晓康1, 杨伟超1   

  1. 1. 中国石油大学(华东)海洋油气装备与安全技术研究中心 青岛 266580;
    2. 中海石油技术检测有限公司 天津 300452
  • 收稿日期:2021-09-15 修回日期:2022-01-05 出版日期:2022-08-20 发布日期:2022-11-03
  • 通讯作者: 袁新安(通信作者),男,1990年出生,博士,副教授,硕士研究生导师。主要研究方向为智能电磁无损检测及结构健康监测技术。E-mail:xinancom@163.com
  • 作者简介:李伟,1980年出生,博士,教授,博士研究生导师。主要研究方向为电磁无损检测技术、海洋装备强度及可靠性分析技术、先进传感器与智能仪器技术等。E-mail:liwei@upc.edu.cn
  • 基金资助:
    国家自然科学基金(52005512)、中石油重大科技项目(ZD2019-183-004)和中央高校基本科研业务费专项资金(20CX05020A,19CX02023A)资助项目

Research on Composite ACFM and EMAT Nondestructive Testing Technology

LI Wei1, SHAO Xinyu1, ZHANG Boying2, YUAN Xinan1, YIN Xiaokang1, YANG Weichao1   

  1. 1. Center for Offshore Equipment and Safety Technology, China University of Petroleum, Qingdao 266580;
    2. CNOOC Technical Inspection Co., Ltd., Tianjin 300452
  • Received:2021-09-15 Revised:2022-01-05 Online:2022-08-20 Published:2022-11-03

摘要: 交流电磁场检测技术是一种灵敏度较高的表面缺陷无损检测技术,但受集肤效应制约难以实现亚表面缺陷检测。为实现表面和亚表面缺陷同时高灵敏度检出,提出一种交流电磁场和电磁超声复合无损检测方法,建立交流电磁场-电磁超声复合检测仿真模型,分析电磁声多物理场下表面及亚表面缺陷磁场畸变信号、超声回波信号与缺陷尺寸的量化关系,开发融合交流电磁场-电磁超声的复合无损检测试验系统,采用人工缺陷试块进行试验测试。仿真和试验结果表明:交流电磁场和电磁超声复合无损检测技术可实现铝板表面和亚表面缺陷高灵敏度检出和分类,提取的特征信号BxBz、回波信号与缺陷尺寸存在量化对应关系,具备缺陷定量识别的能力。

关键词: 交流电磁场检测技术, 电磁超声, 复合无损检测, 表面缺陷, 亚表面缺陷

Abstract: Alternating current field measurement(ACFM) is a kind of nondestructive testing(NDT) technology with high sensitivity for surface defects, but it is difficult to detect subsurface defects due to skin effect. In order to realize the simultaneous detection of surface and subsurface defects, a hybrid NDT method of ACFM and electromagnetic acoustic transducer(EMAT) is proposed. The composite simulation model of ACFM and EMAT is established to analyze the quantitative relationship between magnetic field distortion signal, ultrasonic echo signal and defect size. The composite experimental system of ACFM and EMAT is built to test the artificial defects of aluminum plate. The simulation and experimental results show that the composite NDT technology of ACFM and EMAT can detect and classify the surface and subsurface defects of aluminum plates with high sensitivity. Additionally, the extracted characteristic signals Bx, Bz and echo signal have quantitative corresponding relationship with the defect size, the system has the ability to quantify the defects.

Key words: ACFM, EMAT, composite NDT technology, surface defects, subsurface defects

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