Friction coefficient test fixture 2810-005

specimen

This fixture consists of a fixed horizontal table and a moveable sled. Both the table and sled can be covered with the test material. A tow line attaches the sled to a low-force load cell with a pulley that guides the tow line during the test. The fixture is mounted to the base of the instrument and, as the crosshead/ load cell moves, the sled is pulled across the horizontal table. Data is recorded from the load cell during the test and analyzed to determine both static and kinetic friction. The static friction is derived from the first maximum peak (force) on the load curve and kinetic friction is derived from the average force between two pre-defined points. The coefficient of friction is defined as the recorded force divided by the mass of the sled.