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Y. Song, "Analysis of Abnormal Wear Patterns of Pantograph Strip in Urban Rail Systems Based on Long-Term Maintenance Data", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 10.1, 2026, doi:10.4203/ccc.15.10.1

Keywords: pantograph, overhead conductor rail, pantograph--overhead contact line, railway overhead line, carbon strip, scrap, wear, graphite, recycle, surface coating, wear.

Abstract

Abnormal wear of pantograph strips is a key reliability problem in urban rail systems using rigid catenary power supply. This short paper summarizes a data-driven and experimental study based on long-term maintenance data from Tianjin Metro Line 6, microscopic observations, correlation analysis, and ring-on-block tests. The results show a three-stage wear evolution process: normal wear, mild abnormal wear, and severe abnormal wear. Low relative humidity, especially below 35%, and insufficient contact force trigger mild arcing, carbon-film depletion, surface roughening, material transfer, and finally severe arc ablation. The findings provide a concise mechanism and maintenance guidance for metro pantograph-catenary interfaces.

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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: 15 PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 10.1 Analysis of Abnormal Wear Patterns of Pantograph Strip in Urban Rail Systems Based on Long-Term Maintenance Data Y. Song , Southwest Jiaotong University, Chengdu, People’s Republic of China doi:10.4203/ccc.15.10.1 Full Bibliographic Reference for this paper Y. Song, "Analysis of Abnormal Wear Patterns of Pantograph Strip in Urban Rail Systems Based on Long-Term Maintenance Data", in J. Pombo, (Editor), "Proceedings of the Seventh International Conference on Railway Technology: Research, Development and Maintenance ", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 15, Paper 10.1, 2026, doi:10.4203/ccc.15.10.1 Keywords: pantograph, overhead conductor rail, pantograph--overhead contact line, railway overhead line, carbon strip, scrap, wear, graphite, recycle, surface coating, wear. Abstract Abnormal wear of pantograph strips is a key reliability problem in urban rail systems using rigid catenary power supply. This short paper summarizes a data-driven and experimental study based on long-term maintenance data from Tianjin Metro Line 6, microscopic observations, correlation analysis, and ring-on-block tests. The results show a three-stage wear evolution process: normal wear, mild abnormal wear, and severe abnormal wear. Low relative humidity, especially below 35%, and insufficient contact force trigger mild arcing, carbon-film depletion, surface roughening, material transfer, and finally severe arc ablation. The findings provide a concise mechanism and maintenance guidance for metro pantograph-catenary interfaces. download the full-text of this paper (PDF, 6 pages, 763 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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