BS ISO 3894:2015 pdf download – Road vehicles — Wheels/rims for commercial vehicles — Test methods.
4 General requirement Only fully processed new wheels which are equivalent of wheels intended for the vehicle shall be used for the tests. 5 Wheels — Dynamic cornering fatigue test 5.1 Equipment The test machine shall have a driven rotatable device whereby either the wheel rotates under the influence of a stationary bending moment (see Figure 1) or the wheel is stationary and is subjected to a rotating bending moment (see Figure 2). 5.2 Procedure 5.2.1 Preparation Clamp the rim of the wheel securely to the test fixture. The adaptor face of the test machine shall have equivalent mounting systems to those used on the vehicle. The mating surface of the test adaptor and wheel shall be free of excessive scoring and deformation, and excessive build-up of paint, dirt, or foreign matter. Attach the load arm and adaptor assembly to the mounting surface of the wheel using test bolts and wheel nuts. The test bolt and wheel nuts used shall be — equivalent to those used in a vehicle, — in good condition, and — lubricated or non-lubricated in accordance with the state of being applied to a vehicle (as specified by the vehicle manufacturer). Tighten these wheel nuts at the beginning of the test to the vehicle or wheel manufacturer’s specified torque values. Wheel bolts or nuts can be retightened during the test. 5.2.2 Bending moment application To impart a bending moment to the wheel, apply a force, F, parallel to the plane of the wheel mounting surface at a specified distance, I (moment arm), as shown in Figures 1 and 2. Maintain the bending moment within ±2,5 % of the calculated value.
6 Wheels — Dynamic radial fatigue test 6.1 Equipment The test machine shall be equipped with a means of imparting a constant radial load as the wheel rotates. There are many means of imparting radial loads: the suggested equipment incorporates a driven rotatable drum set which presents a smooth surface wider than the loaded test tyre section width. The recommended minimum external diameter of the drum is 1 700 mm. The test wheel and tyre fixture shall provide loading normal to the drum external surface and in line radially with the centre of the test wheel and drum. The axes of the drum and test wheel shall be parallel (see Figure 3). For dual application wheel, it shall be tested as a single application. The mating surfaces of the test adaptor and wheel shall be free of excessive scoring and deformation, and excessive build-up of paint, dirt, or foreign matter.