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Coupling between thermal localisation and friction mechanisms: heat accumulation effect
- Heat accumulation induced by a succession of railway brakings leads to changes of the friction conditions occurring in pad-disc contact. Infrared thermography observations show a progressive increase of surface temperature over the succession, as well as a modification of the hot band migration phenomenon. From a tribological point of view, the heat accumulation, accompanied by a wear increase, progressively modifies the friction behaviour from one braking to the next. Post-mortem observations of pads are performed on surface by scanning electron microscopy and in depth after Focus Ion Beam cut by scanning ion microscopy. Observations show that, with heat accumulation, the third body quantity rises inside the contact, in accordance with wear increase. It is concluded that source flows of third body, which increase with temperature, feed aplenty the contact and modify its load-bearing capacity.
Autor*innen: | A.L. Cristol, Y. Desplanques, Werner ÖsterleORCiD, G. Degallaix |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
Veröffentlichungsform: | Graue Literatur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | JEF 2010 - 6th European conference on braking (Proceedings) |
Jahr der Erstveröffentlichung: | 2010 |
Herausgeber (Institution): | GRRT, France |
Erste Seite: | 61 |
Letzte Seite: | 69 |
Freie Schlagwörter: | FIB; Heat accumulation; SEM; Successive braking; Thermal localisation; Wear |
Veranstaltung: | JEF 2010 - 6th European conference on braking |
Veranstaltungsort: | Lille, France |
Beginndatum der Veranstaltung: | 2010-11-24 |
Enddatum der Veranstaltung: | 2010-11-25 |
Verfügbarkeit des Dokuments: | Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access") |
Bibliotheksstandort: | Sonderstandort: Publica-Schrank |
Datum der Freischaltung: | 19.02.2016 |
Referierte Publikation: | Nein |