ASTM-D7791 › Standard Test Method for Uniaxial Fatigue Properties of Plastics
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1.1 This test method covers the determination of dynamic fatigue properties of plastics in uniaxial loading. This method is applicable to rigid and semi-rigid plastics. Uniaxial loading systems with tension and compression capabilities are used to determine these properties. Stress and strain levels are below the proportional limits of the material where the strains and stresses are relatively elastic.
1.2 This test method can be used with two procedures:
1.2.1 Procedure A, fatigue testing in tension.
1.2.2 Procedure B, fatigue testing in compression, only for rigid plastics.
1.3 Comparative tests can be run in accordance with either procedure, provided that the procedure is found satisfactory for the material being tested.
1.4 The values stated in SI units are to be regarded as the standard. The values provided in parentheses are for information only.
1.5 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.
Note 1: There is no known ISO equivalent to this standard.
1.6 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.
compression; fatigue properties; plastics; S-N Curve; tension; uniaxial;; ICS Number Code 83.080.01 (Plastics in general)
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June 1, 2017