用于检测曲面结构的阵列磁芯增强型柔性 EMAT

IF 4.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Sensors and Actuators A-physical Pub Date : 2024-09-05 DOI:10.1016/j.sna.2024.115869

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引用次数: 0

摘要

电磁声换能器（EMAT）广泛应用于金属结构的非接触超声波测试。本文提出并优化了一种增强型柔性电磁声换能器，通过采用阵列磁芯到赛道线圈型柔性电磁磁体来替代传统的偏置永磁体，从而提高超声波能量转换效率。利用增强型柔性电磁超声波传感器原型进行的数值模拟和实验研究表明，由于磁芯阵列的应用，新型电磁超声波传感器的偏置磁场和能量转换效率可显著提高。得益于柔性磁体结构的优势，所提出的新型电磁超声波传感器在检测曲面金属结构件的表面裂纹方面具有良好的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A flexible EMAT enhanced with array magnetic core for inspection of curved structure

Electromagnetic acoustic transducer (EMAT) is widely applied for non-contacting ultrasonic testing of metallic structures. In this paper, an enhanced flexible EMAT is proposed and optimized to improve ultrasonic energy conversion efficiency by adopting an array magnetic core to a racetrack coil-type flexible electromagnetic magnet in replacement of the conventional bias permanent magnet. Numerical simulations and experimental investigations conducted with prototype transducers of the enhanced flexible EMAT show that the bias magnetic field and the energy conversion efficiency of the new EMAT can be significantly enhanced due to the application of the magnetic core array. Thanks to the advantage of flexible magnet structure, it is proved that the proposed new EMAT has good performance to detect surface cracks in curved metallic structural components.

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...