ADHESION OF VEHICLE TIRES ON ICY SURFACES, PARTS 1 AND 2 /IN GERMAN/

A TIRE TEST RIG, IN WHICH THE TIRE RUNS ON THE INTERNAL SURFACE OF A DRUM, PERMITTING MEASUREMENTS ON BRAKED AND DRIVEN WHEELS, WAS ADAPTED TO ALLOW MEASUREMENTS OF TIRE ADHESION ON SIMULATED "BLACK ICE". A TOTAL RADIATION PYROMETER MEASURED THE SURFACE TEMPERATURE OF THE ICE THAT HAD FORMED ON THE DRUM SURFACE JUST BEFORE WHEEL-CONTACT. SINCE IT WAS FOUND THAT THE FRICTION COEFFICIENT DID NOT INCREASE SIGNIFICANTLY WITH DURATION OF TESTING AT TEMPERATURES ABOVE -5 DEGREES C., TEST MEASUREMENTS WERE MADE AT BETWEEN 0 AND -5 DEGREES C. THE EXPERIMENTAL RESULTS OBTAINED WHEN TIRES WITH AND WITHOUT STUDS AND WITH SNOW- CHAINS ARE RUN ON THE SURFACE OF SMOOTH ICE PROVIDED BY THE TEST RIG ARE DISCUSSED. TESTS WITH WINTER TIRES FITTED WITH STUDS PROTRUDING 1.3 AND 1.9 MM. 1# RESPECTIVELY INDICATED THAT TEMPERATURE HAS NO INFLUENCE ON THE SLIDING COEFFICIENT OF STUDDED TIRES. THE TEST RIG RESULTS BECOME INVOLID AT TEMPERATURES BELOW -5 DEGREES C. /AUTHOR/

• Supplemental Notes:
  • Vol 16, No 2, PP 93-99
• Corporate Authors:

  Automobil-industrie /Germany

  ,    
• Authors:
  • Weber, R
• Publication Date: 1971-4

Subject/Index Terms

• TRT Terms: Adhesion; Ice; Icing; Low temperature tests; Physical properties; Sliding friction; Snow; Studded tires; Testing equipment; Tires
• Old TRIS Terms: Snow & ice properties
• Subject Areas: Highways; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00223706
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 20 1972 12:00AM