Dynamic Electromagnetic Thermography System for Rail Inspection

Hao Li, Yunhan Shi, B. Gao, Xi-yuan Zhang, Gai Ru, Yong-sheng Shi, Yuhua Zhang, Longhui Xiong
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Abstract

With the rapid development of railway networks, high-speed or intensive rolling of wheels will significantly increase the probability of fatigue damage and it has laid a hidden danger for major safety accidents. Thus, the timely development of rail rolling contact fatigue crack detection plays a vital role in ensuring the safety of railway transportation. Conventional researches are mainly focusing on static conditions whereas it is difficult to meet the strong demands of efficient railway network inspection. This study proposes a dynamic electromagnetic thermography system that has distinct advantages of high detection efficiency, high spatial resolution, and intelligence. Ulteriorly, several scanning simulation and on-site experiments on different rails are implemented to demonstrate the performance and effectiveness of the proposed system and it also provides an innovative way for near-surface cracks inspection on railways in the future.
轨道检测动态电磁热成像系统
随着铁路网络的快速发展,高速或密集的车轮滚动将显著增加车轮疲劳损伤的概率,为重大安全事故埋下隐患。因此,及时开展钢轨滚动接触疲劳裂纹检测对保障铁路运输安全具有至关重要的作用。传统的研究主要集中在静态条件下,难以满足高效铁路网检测的强烈需求。本研究提出一种动态电磁热成像系统,具有检测效率高、空间分辨率高、智能化等显著优势。最后,在不同轨道上进行了扫描仿真和现场实验,验证了该系统的性能和有效性,为未来铁路近表面裂纹检测提供了一种创新的方法。
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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