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"
}