| 刘 轩,吕 炎,边 策,宋国荣,高 杰,何存富.管道电磁超声传感器阵列检测技术研究[J].电子测量与仪器学报,2023,37(11):24-32 |
| 管道电磁超声传感器阵列检测技术研究 |
| Electromagnetic acoustic transducer array of pipeline inspection technology |
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| DOI： |
| 中文关键词: 超声导波 管道检测 传感器阵列 电磁超声 |
| 英文关键词:ultrasonic guided wave pipeline inspection sensor arrays electromagnetic ultrasound |
| 基金项目:国家自然科学基金(12172016,51875010)项目资助 |
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| 中文摘要: |
| 采用电磁超声传感器阵列对管道进行缺陷检测,不仅能够提高电磁超声检测信号的信噪比、灵敏度与分辨能力,同时也
能增强电磁超声检测的直观性与灵活性。 本文详细阐述了基于洛伦兹力的周期永磁铁阵列式电磁超声传感器(PPM-EMAT)激
励超声导波的工作原理,及利用全聚焦算法结合极性一致性算法对缺陷进行定位与成像的工作机理。 建立了有限元仿真模型,
验证了准 T(0,1)模态导波在管道结构中的传播过程。 利用研制的多通道电磁超声检测系统,对含缺陷的不锈钢管道进行了检
测实验,实验结果表明,研制的系统能够检测出管道试样中的多个通孔缺陷,纵向定位误差可控制在 1. 5%以下,实现了基于阵
列电磁超声传感器的管道缺陷成像与定位。 |
| 英文摘要: |
| The utilization of electromagnetic ultrasonic sensor arrays for pipe defect detection not only improves the signal-to-noise ratio,
sensitivity and resolution of electromagnetic ultrasonic detection signals, but also enhances the intuitiveness and flexibility of
electromagnetic ultrasonic detection. In this paper, the working principle of the Lorentz force-based periodic permanent magnet arraytype electromagnetic ultrasound transducer (PPM-EMAT) for excitation of ultrasound guided waves was referred and the mechanism of
defect localization and imaging was used by the TFM and the SCF. Then the FE model was built to verify the process of quasi-T (0,1)
mode guided wave propagation in a pipeline structure. Finally, the developed multi-channel electromagnetic ultrasonic inspection system
was used to perform actual inspection of stainless-steel pipelines with defects and verify the simulation results. The experimental results
show that the developed system can detect multiple through-hole defects in the pipeline specimen, and the longitudinal positioning error
can be controlled below 1. 5%, which verifies that the array electromagnetic ultrasonic sensor pipeline inspection method can realize the
defect imaging and defect positioning of the pipeline |
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