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M. Sol-Sánchez, R. Sañudo, F. Moreno-Navarro, J.M. Castillo-Mingorance, M.C. Rubio-Gámez, "Development of smart pads for track and traffic monitoring in railway lines", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 20.8, 2022, doi:10.4203/ccc.1.20.8

Keywords: monitoring, piezoelectric, rail pads, bituminous sub-ballast, laboratory, full-scale tests.

Abstract

This article contributes with the trend and potential for the use of smart components in railway monitoring, in this study focusing on rail pads and bituminous sub-ballast as components to include the sensors. For this, it was carried out a detailed analysis into different types of sensors to select the most appropriate ones for this application, while later assessing the influence of different variables aiming for optimal design of the smart materials. Also, the paper states the ability of these solutions to detect changes in traffic conditions and/or track performance, carrying out innovative fullscale tests instead of reduced models as commonly used in the testing of these solutions. Results showed that simple and economic piezoelectrics (commonly available) offered accurate, linear and reliable outputs under varying stress levels to be detected to monitor different traffic conditions and track states. Also, results reflected that the optimal position of these sensors could be at the bottom surface of pads (for example, in the interface pad-sleeper when applied as rail pads), providing durability and capacity to record signal variations after fatigue process. From fullscale box tests reproducing track section, it was proved the ability of the smart components to monitor the traffic loads and section performance, being more accurate when the sensors applied in rail pads controlling rail-wheel contact.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 1 PROCEEDINGS OF THE FIFTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 20.8 Development of smart pads for track and traffic monitoring in railway lines M. Sol-Sánchez¹, R. Sañudo², F. Moreno-Navarro¹, J.M. Castillo-Mingorance¹ and M.C. Rubio-Gámez¹ ¹Laboratory of Construction Engineering, University of Granada, Spain ²SUM+LAB, Transport Department. University of Cantabria Santander, Spain doi:10.4203/ccc.1.20.8 Full Bibliographic Reference for this paper M. Sol-Sánchez, R. Sañudo, F. Moreno-Navarro, J.M. Castillo-Mingorance, M.C. Rubio-Gámez, "Development of smart pads for track and traffic monitoring in railway lines", in J. Pombo, (Editor), "Proceedings of the Fifth International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 1, Paper 20.8, 2022, doi:10.4203/ccc.1.20.8 Keywords: monitoring, piezoelectric, rail pads, bituminous sub-ballast, laboratory, full-scale tests. Abstract This article contributes with the trend and potential for the use of smart components in railway monitoring, in this study focusing on rail pads and bituminous sub-ballast as components to include the sensors. For this, it was carried out a detailed analysis into different types of sensors to select the most appropriate ones for this application, while later assessing the influence of different variables aiming for optimal design of the smart materials. Also, the paper states the ability of these solutions to detect changes in traffic conditions and/or track performance, carrying out innovative fullscale tests instead of reduced models as commonly used in the testing of these solutions. Results showed that simple and economic piezoelectrics (commonly available) offered accurate, linear and reliable outputs under varying stress levels to be detected to monitor different traffic conditions and track states. Also, results reflected that the optimal position of these sensors could be at the bottom surface of pads (for example, in the interface pad-sleeper when applied as rail pads), providing durability and capacity to record signal variations after fatigue process. From fullscale box tests reproducing track section, it was proved the ability of the smart components to monitor the traffic loads and section performance, being more accurate when the sensors applied in rail pads controlling rail-wheel contact. download the full-text of this paper (PDF, 6 pages, 246 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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