Standard Test Method for Outdoor Evaluation of Tire Sidewall Component Cracking Resistance
Standard Test Method for Outdoor Evaluation of Tire Sidewall Component Cracking Resistance
SIGNIFICANCE AND USE 4.1 Test Methods D1149 and D1171 can be used to evaluate different aspects of fatigue and weather cracking resistance of sidewall component materials in the form of test specimens. The present method applies to complete tires that are subjected to actual weather exposure conditions. The present method is satisfactory for research and development purposes but is not applicable to regulatory statutes or purchase specifications until standard classifications of state of cracking, similar to those in Test Method D1171, can be established. SCOPE 1.1 This test method covers procedures for evaluating passenger car tires for sidewall component integrity and cracking resistance, using an outdoor roadwheel. 1.2 This test method evaluates the resistance of tire sidewalls to dynamic weathering, atmospheric ozone cracking, fatigue cracking, or openings of splices within, or of junctures between, sidewall components and cracking at molded sidewall elements. 1.3 This test method is useful for evaluating tire black sidewalls, white, or other colored, sidewalls, and coverstrips. 1.4 This test method is limited to comparative performance testing between a “control” sidewall component or assembly and one or more experimental alternatives that are built onto the same tire (“multisection”) or onto tires that are identical in all respects other than the sidewall variation. 1.5 This test method is not applicable to evaluation of sidewall resistance to abrasion, as may be experienced in severe cornering or curb scuffing. 1.6 The values stated in SI units are to be regarded as the standard. 1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precaution statements, see 5.2. 1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM F724-23: Standard Test Method for Outdoor Evaluation of Tire Sidewall Component Cracking Resistance provides standardized procedures for evaluating the integrity and cracking resistance of passenger car tire sidewall components under outdoor conditions. Developed by ASTM International, this method uses an outdoor roadwheel apparatus to simulate actual weather exposure and assess sidewall durability. The test method is designed for comparative performance testing between control and experimental sidewall assemblies, enabling research and development teams to evaluate tire sidewall resistance to dynamic weathering, atmospheric ozone, fatigue cracking, and other failure mechanisms in real-world environmental conditions.
Implementing ASTM F724-23 offers several advantages in the context of tire design and durability testing:
Другие стандарты ASTM
Please note: The method explicitly excludes testing for abrasion resistance, such as that caused by severe cornering or curb scuffing, and is not intended for use as a regulatory or procurement standard.
Several ASTM and industry standards complement or provide important referenced methods for tire sidewall and rubber material testing:
Keywords: tire sidewall cracking resistance, ASTM F724-23, outdoor evaluation, roadwheel test, tire durability, weathering, ozone cracking, fatigue cracking, sidewall integrity, passenger car tires, comparative testing
By adhering to ASTM F724-23, tire manufacturers, researchers, and quality assurance professionals can more accurately evaluate and compare the performance of sidewall components, contributing to the advancement of safer, longer-lasting tires suitable for diverse weather and road conditions.