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Relationships Between Surface Thermal Gradients and Disc Distortion During Stop-Braking with High Energy Dissipation

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Abstract

This paper focuses on the study of the relationships between brake disc surface temperatures and disc distortion for various high-energy stop-braking conditions. An original thermal metrology method combining an infrared camera and a fibre-optic two-colour pyrometer was used to record the spatial and temporal variation in disc surface temperature during braking. Disc distortion was investigated in situ by means of a high-frequency displacement sensor. In addition, an optical trigger kept track of disc revolutions and enabled the synchronization of the IR camera, two-colour pyrometer and displacement sensor measurements. This experimental set-up was successfully used to determine the surface temperature and investigate thermal localization and waviness distortion during braking. The results were correlated with each other in relation to the level of energy dissipation. It was shown that the highest temperature was reached in the hot spot regions at an early stage of stop-braking. By contrast, the greatest disc distortion appeared much later, during the last stage of stop-braking.

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Acknowledgments

This research study has been supported by the International Campus on Safety and Intermodality in Transportation, the Nord-Pas-de-Calais Region, the European Community, the Regional Delegation for Research and Technology, the Ministry of Higher Education and Research, and the National Centre for Scientific Research.

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Authors and Affiliations

  1. Univ Lille Nord de France, 59000, Lille, France

    Haytam Kasem, Philippe Dufrénoy & Yannick Desplanques

  2. USTL, LML, 59650, Villeneuve d’Ascq, France

    Haytam Kasem & Philippe Dufrénoy

  3. ECLille, LML, 59650, Villeneuve d’Ascq, France

    Yannick Desplanques

  4. CNRS, UMR, 8107, 59650, Villeneuve d’Ascq, France

    Haytam Kasem, Philippe Dufrénoy & Yannick Desplanques

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  1. Haytam Kasem
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  2. Philippe Dufrénoy
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  3. Yannick Desplanques
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Correspondence to Haytam Kasem.

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Kasem, H., Dufrénoy, P. & Desplanques, Y. Relationships Between Surface Thermal Gradients and Disc Distortion During Stop-Braking with High Energy Dissipation. Tribol Lett 48, 169–181 (2012). https://doi.org/10.1007/s11249-012-0003-z

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  • DOI: https://doi.org/10.1007/s11249-012-0003-z

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