Tire Friction Test Machine - 1 Pages

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Tire Friction Test Machine

Catalog excerpts

DeliveBest Testing Equipment To Our Customers APPLICATION: This tester is designed in accordance with EN14619.This machine is used to do the wheel adhesion test and get the result of the coefficient of adhesion. 5.3 Wheel adhesion test The wheel adhesion shall be tested by pulling a clean(ed) wheel along a steel plate with a fine brushed and degreased surface of arithmetical mean roughness Ra of 1.5 pm to 2.0 pm (see Figure 2). A vertical force F, of 100 N shall be applied to the wheel which is moved along the steel plate perpendicular to the kick scooter's longitudinal axis and perpendicular to the surface brush direction by a horizontal force F2, applied at the height of the wheel’s axis. The maximum force shall be recorded. The test shall be repeated 10 times and the mean value of F? shall be calculated. The test shall be carried out at a speed of approximately 1 mm/s. The coefficient of adhesion shall be calculated according to Formula (1): *--^ where //o is the coefficient of adhesion; F, is the load applied to wheel, in N; F2 is the adhesive force, in N; mE is the mass of the wheel, in kg; g is the standard acceleration due to gravity (g = 9.81 m/s2).

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