Standard Practice for Using a 67.23-in. (1.707-m) Diameter Laboratory Test Roadwheel in Testing Tires
The 67.23-in. (1.707-m) diameter laboratory test roadwheel is one of the most extensively employed testing devices for tire durability and endurance testing.
This test apparatus operating in the laboratory at controlled surface speeds, loads, and ambient temperatures simulates, to a degree, tire-operating conditions resembling actual service. Because of the roadwheel curvature, the test tire is fatigued more rapidly than a tire operating on a road.
The laboratory roadwheel described in this practice is suitable for comparative evaluation of tires under controlled operating and environmental conditions.
While the laboratory roadwheel may not reproduce structural fatigue exactly as it occurs in service, the laboratory wheel can be used to produce fatigue under controlled conditions.
1.1 This practice covers the requirements for a 67.23-in. (1.707-m) diameter laboratory roadwheel for durability and endurance testing of tires under controlled operating and environmental conditions.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 7 and Note 1.
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