ISO 3006:2015 pdf download – Road vehicles – Passenger car wheels for road use – Test methods

03-05-2022 comment

ISO 3006:2015 pdf download – Road vehicles – Passenger car wheels for road use – Test methods
1 Scope
This International Standard specifies two laboratory methods for testing certain essential fatigue strength characteristics of wheels intended for road use on passenger cars as defined in ISO 3833.
The test methods are
a) dynamic cornering fatigue test;
b) dynamic radial fatigue test.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 3833, Road vehicles — Types — Terms and definitions
ISO 3911, Wheels and rims for pneumatic tyres — Vocabulary, designation and marking
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 3911 and the following apply.
3.1 hub bolt (fasteners)
bolt that is attached to the hub before mounting the wheel
3.2 wheel nut (fasteners)
nut for fastening the wheel as a set with the hub bolts (fasteners) (3.1)
3.3 wheel bolt
bolt for fastening the wheels as a set into a threaded hole in the hub
3.4 load rating
value obtained by converting the force to mass which can be loaded under defined conditions to the tires which can be applied to the test wheel
3.5 maximum vertical static load
maximum value of the vertical load acting on the tyres
Note 1 to entry: It is specified by the wheel manufacturer or vehicle manufacturer and it derives from the specification of a vehicle which is intended to use the test wheel.
3.6 crack
material separation with a propagation of more than 10 mm occurring during a test
Note 1 to entry: The inspection by method for liquid penetrant that are defined in ISO 3452-1.
4 General requirement
Only fully processed new wheels which are equivalent of wheels intended for the vehicle shall be used for the tests.
5 Dynamic cornering fatigue test
5.1 Equipment
The test machine shall have a driven rotatable device where 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).
5.2.1 Preparation
Clamp the rim of the wheel securely to the test fixture. The adaptor face of the test machine shall have equivalent wheel mounting systems to those used on the vehicle. 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.
Tighten these wheel nuts or wheel bolts at the beginning of the test to the vehicle or wheel manufacturer’s specified torque values. In the early stages of the test, to improve the adaptability of the nut contact surface of the wheel and the wheel nut or wheel bolt, the wheel nut or wheel bolt can be re-tightened once.

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