Publication detail
Influence of sanding parameters on adhesion recovery in contaminated wheel–rail contact
OMASTA, M. MACHATKA, M SMEJKAL, D. KŘUPKA, I. HARTL, M.
Czech title
Vliv parametrů pískování na využití adheze v kontaminovaném kontaktu kolo-kolejnice
English title
Influence of sanding parameters on adhesion recovery in contaminated wheel–rail contact
Type
journal article in Web of Science
Language
en
Original abstract
In this work a new twin-disc machine in scale 1:3 was developed and addressed to the study of wheel/rail adhesion under different contact conditions. An influence of sanding parameters such as sand quantity, wheel slip and rolling speed was investigated using a real sanding system in the contact contaminated with water, leaves and wheel flange grease. It has been shown that under wet, leaf or grease contamination, quantity of the sand applied during fixed time period has significant effect on adhesion recovery only for low wheel slip and low rolling speed. In the contaminated contact the effect of sanding on adhesion recovery increases with wheel slip and rolling speed.
Czech abstract
V této práci byl vyvinut nový stroj se dvěma disky v měřítku 1: 3 ke studiu adheze mezi kolem a kolejnicí za různých podmínek. Vliv parametrů pískování, jako je množství písku, prokluzu kol a rychlosti valení byl zkoumán pomocí reálného pískovacího systému v kontaktu kontaminovaného vodou, listy a plastickým mazivem. Bylo prokázáno, že za mokra má množství písku aplikovaného během pevně stanoveného časového období významný vliv na využití adheze pouze pro nízké prokluzy kol a nízké rychlosti valení.
English abstract
In this work a new twin-disc machine in scale 1:3 was developed and addressed to the study of wheel/rail adhesion under different contact conditions. An influence of sanding parameters such as sand quantity, wheel slip and rolling speed was investigated using a real sanding system in the contact contaminated with water, leaves and wheel flange grease. It has been shown that under wet, leaf or grease contamination, quantity of the sand applied during fixed time period has significant effect on adhesion recovery only for low wheel slip and low rolling speed. In the contaminated contact the effect of sanding on adhesion recovery increases with wheel slip and rolling speed.
Keywords in Czech
Kolo/kolejnice; Součinitel adheze; Písek; Listy; Prokluz; Dvoudiskový stroj
Keywords in English
Wheel/rail; Adhesion coefficient; Sand; Leaves; Rolling–sliding; Twin-disc
RIV year
2015
Released
15.01.2015
Publisher
Elsevier
Location
Švýcarsko
ISSN
0043-1648
Volume
322-323
Number
1
Pages from–to
218–225
Pages count
8
BIBTEX
@article{BUT111252,
author="Milan {Omasta} and David {Smejkal} and Ivan {Křupka} and Martin {Hartl},
title="Influence of sanding parameters on adhesion recovery in contaminated wheel–rail contact",
year="2015",
volume="322-323",
number="1",
month="January",
pages="218--225",
publisher="Elsevier",
address="Švýcarsko",
issn="0043-1648"
}