Thermal imaging analysis of ballast fouling: Investigating the effects of parent rock and fouling materials through IRT passive camera

IF 4.9 2区工程技术 Q1 ENGINEERING, CIVIL Transportation Geotechnics Pub Date : 2024-07-10 DOI:10.1016/j.trgeo.2024.101313

Mehdi Koohmishi , Sakdirat Kaewunruen , Guoqing Jing , Yunlong Guo

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Abstract

This study explores the use of infrared thermography (IRT) technology for the non-destructive evaluation of ballast fouling in railway tracks, focusing on the influence of parent rock types and fouling materials. Utilizing thermal imaging, the research investigates how variations in ballast conditions affect surface temperature, which serves as an indicator of structural integrity and health. The experimental setup involved ballast samples derived from three different rock types—basalt, limestone, and andesite—fouled with commonly encountered materials like sand and clay at varying percentages. Results demonstrate that fouling level and type significantly influence the thermal signatures captured by IRT passive camera. Notably, ballast derived from darker rocks exhibited higher temperatures, indicating greater emissivity, while fouled ballast showed distinct temperature patterns compared to clean samples, emphasizing the potential of thermal imaging in detecting and quantifying fouling in ballast layers. This research underscores the viability of IRT passive camera in the routine maintenance and monitoring of railway infrastructure, providing a foundation for further development of integrated diagnostic tools for railway management systems.

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压载污垢的热成像分析：通过 IRT 被动照相机调查母岩和污垢材料的影响

本研究探讨了红外热成像（IRT）技术在铁轨道碴结垢无损评估中的应用，重点关注母岩类型和结垢材料的影响。利用热成像技术，研究人员调查了道碴条件的变化如何影响表面温度，而表面温度是结构完整性和健康状况的指标。实验装置包括来自三种不同岩石类型--玄武岩、石灰石和安山岩--的压载样本，以及不同比例的沙和粘土等常见材料。结果表明，污垢程度和类型对 IRT 被动相机捕捉到的热信号有很大影响。值得注意的是，来自颜色较深岩石的压载物温度较高，表明其发射率较高，而与清洁样本相比，污垢压载物显示出独特的温度模式，这强调了热成像在检测和量化压载层污垢方面的潜力。这项研究强调了 IRT 被动照相机在铁路基础设施日常维护和监测中的可行性，为进一步开发铁路管理系统的综合诊断工具奠定了基础。

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来源期刊

Transportation Geotechnics Social Sciences-Transportation

CiteScore

8.10

自引率

11.30%

发文量

194

审稿时长

51 days

期刊介绍： Transportation Geotechnics is a journal dedicated to publishing high-quality, theoretical, and applied papers that cover all facets of geotechnics for transportation infrastructure such as roads, highways, railways, underground railways, airfields, and waterways. The journal places a special emphasis on case studies that present original work relevant to the sustainable construction of transportation infrastructure. The scope of topics it addresses includes the geotechnical properties of geomaterials for sustainable and rational design and construction, the behavior of compacted and stabilized geomaterials, the use of geosynthetics and reinforcement in constructed layers and interlayers, ground improvement and slope stability for transportation infrastructures, compaction technology and management, maintenance technology, the impact of climate, embankments for highways and high-speed trains, transition zones, dredging, underwater geotechnics for infrastructure purposes, and the modeling of multi-layered structures and supporting ground under dynamic and repeated loads.