Research of a Time-sharing Strategy Based on the PECT-EMAT Hybrid Testing Methods

doi:10.3901/JME.2025.02.001

Abstract

Abstract: Electromagnetic acoustic transducer (EMAT) can be used as a kind of nondestructive testing method for on-line monitoring of pipeline defects. Due to circuit oscillations and other reasons, EMAT exists blind area. The pulsed eddy current testing and electromagnetic acoustic transducer (PECT-EMAT) hybrid testing methods enable electromagnetic ultrasonic monitoring, which use the pulsed eddy currents generated during the detection process to inspect defects on and near the surface of the pipeline. Recently, most research shows that the excitation strategy of the hybrid testing method is single frequency, which makes the detection range of pulsed eddy current testing limited. In order to reduce the blind area of the composite methods, a time-sharing excitation strategy with different frequencies is put forward. Firstly, a time-sharing detection system was established. Through controlling the RF switch and the excitation frequency, EMAT is excited by a signal of high frequency and PECT is excited by a signal of low frequency. Then, the detection capabilities of EMAT and PECT at different excitation frequencies are compared by simulations and experiments. The results both show that the time-sharing strategy can not only improve the signal-noise ratio of EMAT, but also improve the detection range of PECT.

Key words: pipeline NDT, PECT-EMAT hybrid testing method, time-sharing strategy, pulsed eddy current testing, electromagnetic acoustic transducer

CLC Number:

TG115

HU Peng, ZHAO Ruixiang, YANG Shuyan, DUAN Zhirong, XIE Shejuan, CHEN Zhenmao, ZHENG Yang. Research of a Time-sharing Strategy Based on the PECT-EMAT Hybrid Testing Methods[J]. Journal of Mechanical Engineering, 2025, 61(2): 1-10.

Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks

URL: http://www.cjmenet.com.cn/EN/10.3901/JME.2025.02.001

http://www.cjmenet.com.cn/EN/Y2025/V61/I2/1

References

[1] 郑修思. 我国石油供应安全评价系统研究[D]. 北京：中国地质大学(北京)，2017. ZHENG Xiusi. Study on the safety evaluation system of oil supply in China[D]. Beijing：China University of Geosciences Beijing，2017.
[2] 孟凡志. 管道腐蚀缺陷失效概率及增长模型研究[D]. 青岛：中国石油大学(华东)，2018. MENG Fanzhi. Study on failure probability and growth model of pipeline corrosion defects[D]. Qingdao：China University of Petroleum (East China)，2018.
[3] 闵希华，杨理践，王国庆，等. 长输油气管道弱磁应力内检测技术[J]. 机械工程学报，2017，53(12)：19-27. MIN Xihua，YANG Lijian，WANG Guoqing，et al. Weak magnetism stress internal testing technology of the long distance oil-gas pipeline[J]. Journal of Mechanical Engineering，2017，53(12)：19-27.
[4] EDWARDS R S，SOPHIAN A，DIXON S，et al. EMAT and eddy current dual probe for detecting surface and near-surface defects[C]// American Institute of Physics. AIP Conference Proceedings. New York：AIP，2006，820(1)：1515-1522.
[5] URAYAMA R，UCHIMOTO T，TAKAGI T. Application of EMAT/EC dual probe to monitoring of wall thinning in high temperature environment[J]. International Journal of Applied Electromagnetics and Mechanics，2010，33(3-4)：1317-1327.
[6] UCHIMOTO T，GUY P，TAKAGI T，et al. Evaluation of an EMAT–EC dual probe in sizing extent of wall thinning[J]. NDT & E International，2014，62：160-166.
[7] 唐华溢. 涡流与电磁超声复合无损检测技术研究[D]. 杭州：浙江大学，2014. TANG Huayi. Research on composite non-destructive detection technology of ECT and EMAT[D]. Hangzhou：Zhejiang University，2014.
[8] 孙峥. 基于电磁超声与脉冲涡流的管道内检测技术研究[D]. 哈尔滨：哈尔滨工业大学，2017. SUN Zheng. Research on pipeline inspection based on EMAT and pulsed eddy current technology[D]. Harbin：Harbin Institute of Technology，2017.
[9] 赵普. 锅炉水冷壁管磁声复合检测技术研究[D]. 哈尔滨：哈尔滨工业大学，2019. ZHAO Pu. Research on magnetic and acoustic composite detection technology of boiler water wall tubes[D]. Harbin：Harbin Institute of Technology，2019.
[10] 许鹏，耿明，方舟，等. 基于复合电磁的高速轨道缺陷检测方法研究[J]. 机械工程学报，2021，57(18)：57-65. XU Peng，GENG Ming，FANG Zhou，et al. Study on high-speed rail defect detection method based on combination of EC and MFL testing[J]. Journal of Mechanical Engineering，2021，57(18)：57-65.
[11] 周正干，黄凤英，于芳芳. 电磁超声和涡流组合检测方法[J]. 无损检测，2009，31(9)：706. ZHOU Zhenggan，HUANG Fengying，YU Fangfang. Testing method combing EMAT with eddy current[J]. Nondestructive Testing，2009，31(9)：706.
[12] GUO Wei，GAO Bin，TIAN Guiyun，et al. Physic perspective fusion of electromagnetic acoustic transducer and pulsed eddy current testing in non-destructive testing system[J]. Philosophical Transactions of the Royal Society A，2020，378(2182)：20190608.
[13] ZHAO Xin，LIU Zenghua，GONG Yu，et al. Performance degradation detection of 12CrMoV steel by magneto- acoustic compound inspection method[J]. NDT & E International，2021，124：102525.
[14] 李伟，邵鑫宇，张伯莹，等. 交流电磁场和电磁超声复合无损检测技术研究[J]. 机械工程学报，2022，58(16)：153-159. LI Wei，SHAO Xinyu，ZHANG Boying，et al. Research on composite ACFM and EMAT nondestructive testing technology[J]. Journal of Mechanical Engineering，2022，58(16)：153-159.
[15] 田明明，解社娟，韩捷，等. 基于小波分析的脉冲涡流/电磁超声复合无损检测方法[J]. 中国机械工程，2019，30(16)：1925. TIAN Mingming，XIE Shejuan，HAN Jie，et al. A hybrid PECT/EMAT NDT based on wavelet analysis[J]. Journal of Mechanical Engineering，2019，30(16)：1925.
[16] 田明明，解社娟，肖盼，等. 基于脉冲涡流/电磁超声复合检测方法的复杂缺陷检测[J]. 无损检测，2016，38(12)：9-14. TIAN Mingming，XIE Shejuan，XIAO Pan，et al. Complicated defects detection based on hybrid NDT methods of PECT and EMAT[J]. Nondestructive Testing，2016，38(12)：9-14.
[17] XIE Shejuan，TIAN Mingming，XIAO Pan，et al. A hybrid nondestructive testing method of pulsed eddy current testing and electromagnetic acoustic transducer techniques for simultaneous surface and volumetric defects inspection[J]. NDT&E International，2017，86：153-163.
[18] XIE Shejuan，YANG Shuyan，TIAN Mingming，et al. A hybrid nondestructive testing method of pulsed eddy current testing and electromagnetic acoustic transducer techniques based on wavelet analysis[J]. NDT&E International，2023，138：102900.
[19] DUAN Zhirong，XIE Shejuan，HUANG Lei，et al. Quantitative sizing of compound location defects based on PECT-EMAT hybrid testing methods[J]. Mechanical Systems and Signal Processing，2022，178：109267.
[20] 严丰庆，钱澄. 射频开关及其在通信系统中的应用[J]. 电子器件，2005，28(1)：97-100. YAN Fengqing，QIAN Cheng. RF switch and its applications in communication systems[J]. Chinese Journal of Electron Devices，2005，28(1)：97-100.