ASTM-D7774 2012

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D7774-12 Standard Test Method for Flexural Fatigue Properties of Plastics

Published By	Publication Date	Number of Pages
ASTM	2012	6

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Categories: 83.080.01 - Plastics in general, ASTM

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Description

ASTM D7774-12

Historical Standard: Standard Test Method for Flexural Fatigue Properties of Plastics

ASTM D7774

Scope

1.1 This test method covers the determination of dynamic full reversed fatigue properties of plastics in flexure. This method is applicable to rigid and semi-rigid plastics. Stress and strain levels are below the proportional limit of the material where the strains and stresses are relatively elastic. Three-point or four-point bending systems are used to determine these properties.

1.2 This test method can be used with two procedures:

1.2.1 Procedure A, designed for materials that use three-point loading systems to determine flexural strength. Three-point loading system is used for this procedure.

1.2.2 Procedure B, designed for materials that use four-point loading systems to determine flexural strength. Four-point loading system is used for this procedure.

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—This standard and ISO 13003 address the same subject matter, but differ in technical content and results cannot be directly compared between the two test methods.

Keywords

fatigue properties; flexural; plastics; S-N Curve

ICS Code

ICS Number Code 83.080.01 (Plastics in general)

DOI: 10.1520/D7774-12

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Apparatus FIG. 1
3	Sampling, Test Specimens, and Test Units Number of Test Specimens Calibration and Standardization Conditioning FIG. 2
4	Procedure
5	Plotting and Interpretation of Results Report Precision and Bias Keywords TABLE 1

Additional information

Standard Title	D7774-12 Standard Test Method for Flexural Fatigue Properties of Plastics
Published Code	ASTM
Publication Date	2012
Pages Count	6
ICS Codes	83.080.01 - Plastics in general