1 Scope
This standard specifies the terms and definitions, test apparatuses, test conditions, test procedure and test report for impact performance of motor vehicle tyres.
This standard is applicable to the new tyres of passenger cars and light trucks.
2 Normative references
The following documents for the application of this document are essential. For dated references, only the edition cited applies. For undated reference, the latest edition (including all the amendments) applies.
GB/T 2977 Size designation, dimensions, inflation pressure and load capacity for truck tyres
GB/T 2978 Size designation, dimensions, inflation pressure and load capacity for passenger car tyres
GB/T 6326 Tyre terms and definitions
GB 9743 Passenger car tyres
GB 9744 Truck tyres
3 Terms and definitions
For the purposes of this document, the terms and definitions specified in GB/T 6326 as well as the followings apply.
3.1
frontal impact test fixture
test device for frontal (radial) impact performance of wheel
3.2
drop mass
the mass impacted on the tyre through striker
3.3
striker
a raised impactor that is bolted to the pendulum for impacting the wheel
Foreword II
1 Scope
2 Normative references
3 Terms and definitions
4 Test apparatuses
5 Test conditions
6 Test procedure
7 Test report
Annex A (Informative) Schematic diagrams for test apparatuses
Annex B (Informative) Technical requirements of pendulum
