Investigação experimental de revestimentos refletores solares como isolantes térmicos para trilhos em corredores de transporte de cargas pesadas

Authors

DOI:

https://doi.org/10.47456/bjpe.v11i4.50960

Keywords:

Thermal expansion, Thermal buckling, Rail coating, Thermal movement, Rail

Abstract

Os trilhos são componentes críticos da infraestrutura ferroviária responsáveis por distribuir cargas, guiar veículos e garantir segurança operacional. No entanto, variações de temperatura e irradiação solar induzem estresse térmico, levando à expansão e contração dos trilhos, bem como ao potencial de flambagem. Embora estudos anteriores tenham explorado a otimização do perfil e lubrificação, há pouca pesquisa sobre mitigação térmica via revestimentos. Este estudo avalia a eficácia de três revestimentos comerciais na redução da variação de temperatura em trilhos AREMA 136RE. Termopares monitoraram as temperaturas em amostras revestidas e não revestida ao longo de várias estações, enquanto um piranômetro registrava a irradiação solar. Os resultados mostram que os trilhos revestidos tiveram picos de temperatura significativamente menores, com reduções superiores a 10°C no verão. Revestimentos com nanoesferas cerâmicas ocas tiveram desempenho superior. Eles mantiveram temperaturas 8–10% menores que a resina alquídica acima de 20 °C. A análise sazonal confirmou comportamento consistente, com diferenciais diminuindo nos meses frios. Os resultados sugerem que revestimentos refletivos podem mitigar riscos de flambagem térmica, principalmente em curvas acentuadas (raio < 50 m), onde os diferenciais de temperatura críticos são inferiores a 20 °C.

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Author Biographies

  • Carlos Artur Alevato Leal, IF Sudeste MG

    Doctor of Mechanical Engineering from the Federal University of Minas Gerais (2020), area of ​​concentration: manufacturing processes. Master of Mechanical Engineering from the Federal University of Minas Gerais (2016), area of ​​concentration: manufacturing processes. Graduated in Mechanical Engineering from the Federal University of Minas Gerais with emphasis on Automotive and merit for best academic performance, Agnelo Macêdo gold medal of the first semester of 2011. EBTT Professor at the Federal Institute of Southeast Minas Gerais, Santos Dumont Campus, since May 2016. Director of Institutional Development of the Santos Dumont Campus since 03/05/2024. Current research area: maintenance, manufacturing processes and railways.

  • Maria Rita Pereira de Paiva, IF Sudeste MG

    Holds a vocational technical degree in Mechanical Engineering from the Federal Institute of Southeast Minas Gerais - Santos Dumont (2021) and a high school diploma from the same institution. Currently pursuing a degree in Railway and Metro Engineering. Currently a teaching assistant - On the Rails of Electromagnetism - at the Federal Institute of Southeast Minas Gerais. Has experience in the field of Mechanical Engineering, with an emphasis on Machine Design.

  • Stephany Cristina da Silva, IF Sudeste MG

    Undergraduate student in Railway and Metro Engineering.

  • Felipe Ramon de Araújo Ribeiro, IF Sudeste MG

    University student studying Railway and Metro Engineering, a technician in freight transport, and I dedicate myself to research and writing articles in the areas of logistics, transport, and also in the field of education that focuses on these areas.

  • Carlos Eduardo Gonçalves Ferreira Junior, IF Sudeste MG

    Graduating in Railway and Metro Engineering from IF Sudeste MG - Santos Dumont Campus. Electronics technician from the Pandiá Calógeras Technical School. Founding director of Evidência Junior, the Junior Enterprise of the Railway and Metro Engineering and Mathematics courses at the Federal Institute of Southeast MG, responsible for managing and leading teams in the execution of training courses, projects, and studies to improve production indices (KPIs). Scholarship holder for teaching and research projects related to creative processes, personal development, and data analysis.

  • Larissa Fernandes Nunes, MRS S.A.

    Technical degree in Mechanical Drawings and Projects from SENAI/Itabira (2011), graduated in Metallurgical Engineering (2016) from the State University of Minas Gerais - UEMG, Master's degree in Materials Science (2019) and Specialization in Rail Freight Transport (2020) from the Military Engineering Institute. Currently working as a Railway Analyst in the Maintenance Research and Development Management at MRS Logística.

  • Fernando Paulo Caneschi, IF Sudeste MG

    Holds a degree in Civil Engineering from the Federal University of Viçosa (UFV), graduating in May 2006. Has experience in the field of Civil Engineering, with emphasis on construction materials (roads), soil stabilization, as well as soil chemistry and mineralogy. Was a PROBIC FAPEMIG/UFV Scientific Initiation scholarship recipient for two years, from 2003 to 2004 and from 2004 to 2005. Began postgraduate studies in civil engineering at UFV, at the master's level, in May 2006, completing it in February 2008. In March of that same year, began his doctoral studies, which he completed in December 2012. Currently, he is part of the faculty of the Federal Institute of Education, Science and Technology of Southeast Minas Gerais - Santos Dumont Campus in Minas Gerais, acting as Coordinator of the technical course in Metro-Rail System Maintenance.

  • Philipe Augusto de Paula Pacheco, IF Sudeste MG

    Full-time professor at the Federal Institute of Education, Science and Technology of Southeast Minas Gerais, Santos Dumont campus. Graduated in Mechanical Engineering from the Federal University of São João del Rei (UFSJ). Master's degree in Mechanical Engineering in the area of ​​Numerical Simulation of Material Behavior and Manufacturing Processes from the Postgraduate Program in Mechanical Engineering at UFSJ. PhD in Mechanical Engineering from the University of Campinas (UNICAMP), affiliated with the Railway Laboratory (LAFER), with projects in: Optimization of railway wheel profiles; Dynamics of railway wagons and Energy indicator for high-load wagons.

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"Close-up image of railway tracks featuring aged metal fasteners and wooden sleepers in the background. The cover displays the title of the scientific article ‘Experimental Investigation of Solar-Reflective Coatings as Thermal Insulators for Rails in Heavy-Haul Corridors’ at the top, followed by the authors’ names. In the bottom-left corner, the colorful BJPE logo (a multicolored hot air balloon) is visible, and in the bottom-right corner appears the text ‘Brazilian Journal of Production Engineering’.”

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Published

2025-12-10

Issue

Vol. 11 No. 4 (2025): Regular Issue (October - December) *Continuous Publication of Articles

Section

Civil Engineering, Design and Architecture

License

Copyright (c) 2025 Leal, C. A. A., Paiva, M. R. P. de, Silva, S. C. da, Ribeiro, F. R. de A., Ferreira Junior, C. E. G., Nunes, L. F., Caneschi, F. P., & de Paula Pacheco, P. A.

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How to Cite

Leal, C. A. A., Paiva, M. R. P. de, Silva, S. C. da, Ribeiro, F. R. de A., Ferreira Junior, C. E. G., Nunes, L. F., Caneschi, F. P., & Pacheco, P. A. de P. (2025). Investigação experimental de revestimentos refletores solares como isolantes térmicos para trilhos em corredores de transporte de cargas pesadas. Brazilian Journal of Production Engineering, 11(4), 359-369. https://doi.org/10.47456/bjpe.v11i4.50960

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