A friction tester 10 can measure the friction provided by a surface at a slip speed independent to the speed of travel of the friction tester. The friction tester 10 comprises a vehicle 12 which can travel over a surface 14 at a first speed, and a test element 16, preferably a wheel, is driven to a second speed, preferably by a hydraulic and/or electric motor 18, and a measuring device 24. The second speed is independently controllable relative to the first speed; test element 16 is engaged with the surface 14; and the first and second speeds are different so that the test element 16 slips over the surface with a slip speed, which is equal to the difference between the first and second speeds. The friction properties of the surface can be calculated by data from the measuring device 24. A liquid delivery system 28 may be provided for wetting the surface 14 in front of the test element 16.
Friction Tester
2016-04-27
Patent
Electronic Resource
English
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES |
Dynamic friction tester ( DF Tester )
Automotive engineering | 1992
|Development of an engine head friction tester
Automotive engineering | 1999
|Development of an Engine Head Friction Tester
British Library Conference Proceedings | 1999
|