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Discrepancies between longitudinal high slip and lateral low slip friction measurements on prepared ice surfaces: Paper and poster
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.
2009 (English)In: Compendium of papers DVD, TRB 88th annual meeting: January 11 - 15, 2009, Washington, D.C, Washington, DC: TRB , 2009, 1-13 p.Conference paper, Published paper (Refereed)
Abstract [en]

The Swedish road administration requested that an independent organization facilitate friction tests with several types of friction measuring devices. These tests were done on the following three surfaces: macro rough and micro smooth ice, macro- and micro smooth ice and macroand micro rough ice. The objective was to evaluate lateral low slip measuring devices against traditional longitudinal high slip devices. This was done by evaluating how they measure road grip, i.e. friction differences between road surfaces and the measuring tire. Tests were performed on Lake Kakel near Arjeplog, northern Sweden on March 18th, 2008. Weather conditions were stable with ice temperatures between -4°C (24.8°F) and -3°C (26.6°F). Tests showed that changes on the ice surfaces were readily detected with all four of the lateral low slip friction measurement devices and the two longitudinal high slip devices. Friction resolutions were higher with low lateral slip devices compared to high longitudinal slip devices. The tires on the devices were of different types and are the main reason for the difference in friction resolution. One major difference was detected; the lateral low slip method measured higher friction between its regular winter tire and the macro rough, micro smooth surfacecompared to the friction on the macro- and micro rough ice. Longitudinal high slip devices measured higher friction between its industrial friction tire and macro- and micro rough ice. Capacity to measure friction in curves was only displayed by the high longitudinal slip devices.

Place, publisher, year, edition, pages
Washington, DC: TRB , 2009. 1-13 p.
Keyword [en]
Engineering mechanics - Other engineering mechanics
Keyword [sv]
Teknisk mekanik - Övrig teknisk mekanik
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Infrastructure Engineering
Research subject
Machine Elements; Structural Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-32063Local ID: 66cfd730-c46d-11de-b769-000ea68e967bOAI: oai:DiVA.org:ltu-32063DiVA: diva2:1005297
Conference
Annual meeting. Transportation Research Board (TRB) : 11/01/2009 - 15/01/2009
Projects
CASTT - Centre for Automotive Systems Technologies and Testing
Note
Godkänd; 2008; Bibliografisk uppgift: DVD-ROM; 20091029 (henand)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-10-19Bibliographically approved

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