MEASURING TIRE FRICTION UNDER SLIP WITH THE PENN STATE ROAD FRICTION TESTER
SKID RESISTANCE MEASUREMENTS REMAIN THE MOST PRACTICAL METHOD FOR CHARACTERIZING THE FRICTIONAL PROPERTIES OF HIGHWAY PAVEMENTS. FRICTION MEASUREMENTS WITH TIRES OPERATING UNDER SLIP ARE, HOWEVER, NEEDED FOR RESEARCH PURPOSES. THE ADAPTATION OF THE PENN STATE ROAD FRICTION TESTER, WHICH WAS ORIGINALLY DESIGNED FOR MEASURING SKID RESISTANCE WITH A FULL-SCALE TIRE, TO THE MEASUREMENTS OF TIRE-PAVEMENT FRICTION UNDER SLIP IS DESCRIBED. THE METHOD EMPLOYED CONSISTS IN GRADUALLY RETARDING THE TEST WHEEL BY AN ADJUSTABLE BRAKE ACTUATING SYSTEM AND MEASURING THE FORCES IN BOTH HORIZONTAL ARMS OF THE TEST WHEEL PARALLELOGRAM SUSPENSION. BY ELECTRIC ADDITION OF THESE FORCES AND MEASURING VEHICLE SPEED AND TEST WHEEL VELOCITY THE COMPLETE FRICTION VS SLIP RELATIONSHIP OF AN INDIVIDUAL TEST CYCLE IS OBTAINED. /AUTHOR/
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Supplemental Notes:
- Paper sponsored by Committee on Surface-Vehicle Interaction, and presented at the 46th and 47th Annual Meeting of the Highway Research Board. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
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Authors:
- Domandt, Herbert
- Meyer, W E
- Publication Date: 1968
Media Info
- Media Type: Print
- Features: Figures; References;
- Pagination: pp 34-41
- Monograph Title: Surface properties of pavements and vehicle interaction
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Serial:
- Highway Research Record
- Issue Number: 214
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Friction tests; Pavements; Skid resistance tests; Speed; Testing equipment; Tires; Vehicles
- Uncontrolled Terms: Slippage
- Subject Areas: Highways; Pavements; Vehicles and Equipment;
Filing Info
- Accession Number: 00206747
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Jul 22 1994 12:00AM