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Significance and Use
Tests for dynamic fatigue are designed to simulate the continually repeated distortions received in service by many rubber articles, such as tires, belts, footwear, and molded goods.
These distortions may be produced by extension, compressive, and bending forces or combinations thereof.
The effect of the distortions is to weaken the rubber until surface cracking or rupture occurs. Where rubber is combined with other flexible materials such as fabric, the effect may be evidenced by separation at the interface between the materials, caused either by breaking of the rubber or failure of the adhesion or both.
These tests are, therefore, of the following two types:
Type I—Tests designed to produce separation of rubber-fabric combinations by controlled bending of the specimens.
Type II—Tests designed to produce cracking on the surface of rubber by either repeated bending or extension as may occur in service.
1.1 These test methods cover testing procedures that estimate the ability of soft rubber materials to resist dynamic fatigue. No exact correlation between these test results and service is given or implied. This is due to the varied nature of service conditions. These test procedures do yield data that can be used for the comparative evaluation of rubber or composite rubber-fabric materials for their ability to resist dynamic fatigue.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers--Tension
D1349 Practice for Rubber--Standard Temperatures for Testing
D1682 Test Method for Breaking Load and Elongation of Textile Fabric
D3183 Practice for Rubber--Preparation of Pieces for Test Purposes from Products
D3767 Practice for Rubber--Measurement of Dimensions
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
ICS Number Code 83.060 (Rubber)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM D430-06(2012), Standard Test Methods for Rubber Deterioration—Dynamic Fatigue, ASTM International, West Conshohocken, PA, 2012, www.astm.orgBack to Top