| 王雪儿,叶鸣,刘菲,白永江,杨放,谢拥军.微波显微镜检测金属/非金属裂缝的研究[J].电子测量与仪器学报,2024,38(8):227-236 |
| 微波显微镜检测金属/非金属裂缝的研究 |
| Research on the detection of metal/non-metalliccracks by microwave microscope |
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| DOI： |
| 中文关键词: 微波显微镜 金属裂缝 非金属裂缝 无损检测 谐振式同轴探头 自动化检测 |
| 英文关键词:microwave microscopy metal cracks non-metal cracks non-destructive testing resonant coaxial probes auto-mated detection |
| 基金项目: |
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| Author | Institution |
| Wang Xueer | College of Information and Control Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China |
| Ye Ming | College of Information and Control Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China |
| Liu Fei | College of Information and Control Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China |
| Bai Yongjiang | College of Information and Control Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China |
| Yang Fang | College of Information and Control Engineering, Xi′an University of Architecture and Technology, Xi′an 710055, China |
| Xie Yongjun | School of Electronic and Information Engineering, Beihang University, Beijing 100191, China |
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| 摘要点击次数: 15 |
| 全文下载次数: 74 |
| 中文摘要: |
| 裂缝检测对钢结构和混凝土建筑、核电、航空等领域具有重要实际意义。本文采用谐振式同轴探头构造微波显微镜开展了金属和非金属裂缝的无损检测方法研究。首先,通过电磁仿真研究了耦合间隙、提离高度和探头材质等关键参数对检测性能的影响。然后,以机加工黄铜、铝合金样品和3D打印非金属样品进行了实验验证。结果表明:同轴探头在谐振频率处的S11幅度可用于材料表面裂缝的无损检测,耦合间隙、提离高度是影响检测灵敏度的主要设计参数;相比于传统的反射型同轴探头,谐振式探头检测灵敏度(有无裂缝时观测频点处的S11幅度差)提高了约20~30倍;针对金属样品的宽3.9 mm裂缝的仿真与实测结果吻合良好,裂缝宽度检测的相对误差＜7.7%,且对于裂缝宽度为1.7 mm的3D打印非金属裂缝样品,其裂缝宽度实测相对误差在6%内。本研究对金属和非金属裂缝的无损检测具有一定借鉴意义。 |
| 英文摘要: |
| Crack detection is of great practical significance for steel structures and concrete buildings, nuclear power, aviation and other fields. In this paper, a resonant coaxial probe is used to construct a microwave microscope to carry out the study of non-destructive testing methods for metal and non-metallic cracks. First of all, the influence of key parameters such as coupling gap, lifting height and probe material on the detection performance is studied through electromagnetic simulation. Then, the experimental verification was carried out with machined brass, aluminum alloy samples and 3D printed non-metallic samples. The results show that the S11 amplitude of the coaxial probe at the resonant frequency can be used for non-destructive detection of cracks on the surface of the material. The coupling gap and lifting height are the main design parameters that affect the detection sensitivity. Compared with the traditional reflective coaxial probe, the detection sensitivity of the resonant probe (S11 at the observation frequency point when there is a crack or not) The amplitude difference) has been increased by about 20~30 times; the simulation of the 3.9 mm crack in the width of the metal sample is in good agreement with the measured results. The relative error of the crack width detection is < 7.7%, and for 3D printed non-metallic crack samples with a crack width of 1.7 mm, the measured relative error of the crack width is Within 6%. This research has certain reference significance for the non-destructive detection of metal and non-metallic cracks. |
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