System for Investigation of Friction Properties of the Road Surface

Friction properties of the road surface have a great influence on the safety of automobile motion. These properties are characterized by the tyre-to-road adhesion coefficient, which is measured during the routine and acceptance investigations of roads. In the paper, the method of measurement of this...

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Main Authors: Janusz Pokorski, Andrzej Reński, Hubert Sar
Format: Article
Language:English
Published: RTU Press 2015-06-01
Series:The Baltic Journal of Road and Bridge Engineering
Subjects:
Online Access:https://bjrbe-journals.rtu.lv/article/view/3427
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author Janusz Pokorski
Andrzej Reński
Hubert Sar
author_facet Janusz Pokorski
Andrzej Reński
Hubert Sar
author_sort Janusz Pokorski
collection DOAJ
description Friction properties of the road surface have a great influence on the safety of automobile motion. These properties are characterized by the tyre-to-road adhesion coefficient, which is measured during the routine and acceptance investigations of roads. In the paper, the method of measurement of this coefficient is presented. For investigation of the tyre-to-road adhesion coefficient the special measurement system was developed. The main part of the system is dynamometer trailer, which makes it possible to measure the friction force between tyre and road surface. The adhesion coefficient as a quotient of the friction force and vertical load is a result of measurements. Additionally the system enables to determine the graph of the adhesion coefficient as a function of wheel slip ratio. In the paper a description of the measurement system and a principle of its operation are presented. Exemplary results of tyre-to-road adhesion coefficients measured on different roads are also presented. The results show many differences between these coefficients in dependence of road upper layer technology, degree of its wear, weather conditions, sliding velocity and others. The system originally designed for investigation of friction parameters of road surfaces can have much wider applications, for example in tyre investigations, for automotive experts, in the work of judgment witnesses and others.
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spelling doaj.art-2fd9fcd0a8ec4bd899b64dedd1678e662022-12-22T01:16:59ZengRTU PressThe Baltic Journal of Road and Bridge Engineering1822-427X1822-42882015-06-0110212613110.3846/bjrbe.2015.161872System for Investigation of Friction Properties of the Road SurfaceJanusz Pokorski0Andrzej Reński1Hubert Sar2Institute of Vehicles, Warsaw University of Technology, Narbutta 84, 02-524 Warsaw, PolandInstitute of Vehicles, Warsaw University of Technology, Narbutta 84, 02-524 Warsaw, PolandInstitute of Vehicles, Warsaw University of Technology, Narbutta 84, 02-524 Warsaw, PolandFriction properties of the road surface have a great influence on the safety of automobile motion. These properties are characterized by the tyre-to-road adhesion coefficient, which is measured during the routine and acceptance investigations of roads. In the paper, the method of measurement of this coefficient is presented. For investigation of the tyre-to-road adhesion coefficient the special measurement system was developed. The main part of the system is dynamometer trailer, which makes it possible to measure the friction force between tyre and road surface. The adhesion coefficient as a quotient of the friction force and vertical load is a result of measurements. Additionally the system enables to determine the graph of the adhesion coefficient as a function of wheel slip ratio. In the paper a description of the measurement system and a principle of its operation are presented. Exemplary results of tyre-to-road adhesion coefficients measured on different roads are also presented. The results show many differences between these coefficients in dependence of road upper layer technology, degree of its wear, weather conditions, sliding velocity and others. The system originally designed for investigation of friction parameters of road surfaces can have much wider applications, for example in tyre investigations, for automotive experts, in the work of judgment witnesses and others.https://bjrbe-journals.rtu.lv/article/view/3427tyre-to-road adhesionskid resistance testertraffic safetyaccident reconstruction
spellingShingle Janusz Pokorski
Andrzej Reński
Hubert Sar
System for Investigation of Friction Properties of the Road Surface
The Baltic Journal of Road and Bridge Engineering
tyre-to-road adhesion
skid resistance tester
traffic safety
accident reconstruction
title System for Investigation of Friction Properties of the Road Surface
title_full System for Investigation of Friction Properties of the Road Surface
title_fullStr System for Investigation of Friction Properties of the Road Surface
title_full_unstemmed System for Investigation of Friction Properties of the Road Surface
title_short System for Investigation of Friction Properties of the Road Surface
title_sort system for investigation of friction properties of the road surface
topic tyre-to-road adhesion
skid resistance tester
traffic safety
accident reconstruction
url https://bjrbe-journals.rtu.lv/article/view/3427
work_keys_str_mv AT januszpokorski systemforinvestigationoffrictionpropertiesoftheroadsurface
AT andrzejrenski systemforinvestigationoffrictionpropertiesoftheroadsurface
AT hubertsar systemforinvestigationoffrictionpropertiesoftheroadsurface