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Road Hazard Impact Test for Wheel and Tire Assemblies (Passenger Car, Light Truck, and Multipurpose Vehicles)
- Ground Vehicle Standard
- J1981_200503
- Revised
Sector:
Issuing Committee:
Language:
English
Scope
The test is designed to evaluate the frontal impact resistance of wheel and tire assemblies used with passenger cars, light trucks and multi-purpose vehicles. The test is specifically related to vehicle pothole tests that are undertaken by most vehicle manufacturers. The scope has been expanded to allow the use of a striker that can be angled to preferentially impact the inboard and outboard wheel flange. For side impact of the outboard rim flange only, please refer to SAE J175. This SAE Recommended Practice provides a procedure to test a wheel or a tire and the test failure criteria. The specific test for a vehicle requires input from a pothole test on that vehicle to establish the drop height of the striker used in this test.
Rationale
The current SAE 1981 covers equipment and procedures to conduct a frontal impact test on a wheel to simulate a road hazard impact. This review adds the performance requirements for a wheel undergoing the test. The revisions to the standard includes the test parameters of the tire and the wheel. This performance criteria establishes a functional degradation of the wheel due to impact and not cosmetic issues. By establishing the performance level in addition to the test parameters, impact energy levels can be evaluated to further develop the standard for a minimum wheel performance on frontal impacts. Until this test is completed, the specification refers to the actual vehicle pothole test to establish the impact energy or to develop the energy from damage seen on the wheel for real world cases.
Recommended Content
Data Sets - Support Documents
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Issuing Committee
The SAE Wheel Standards Committee develops standards for passenger cars and light trucks which address three or more of the following: Reduce costs, Harmonize global markets, Facilitate trade through reduced regulation, Enhance safety, Improve environment, Increase productivity of processes, Allow uniform testing or performance, Create common language, Permit common interfaces.
Reference
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