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ASTM-E1681:2008 Edition

ASTM-E1681:2008 Edition

$44.96

E1681-03(2008)e1 Standard Test Method for Determining a Threshold Stress Intensity Factor for Environment-Assisted Cracking of Metallic Materials

Published By Publication Date Number of Pages
ASTM 2008 13
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1.1 This test method covers the determination of the environment-assisted cracking threshold stress intensity factor parameters, K IEAC and K EAC , for metallic materials from constant-force testing of fatigue precracked beam or compact fracture specimens and from constant-displacement testing of fatigue precracked bolt-load compact fracture specimens.

1.2 This test method is applicable to environment-assisted cracking in aqueous or other aggressive environments.

1.3 Materials that can be tested by this test method are not limited by thickness or by strength as long as specimens are of sufficient thickness and planar size to meet the size requirements of this test method.

1.4 A range of specimen sizes with proportional planar dimensions is provided, but size may be variable and adjusted for yield strength and applied force. Specimen thickness is a variable independent of planar size.

1.5 Specimen configurations other than those contained in this test method may be used, provided that well-established stress intensity calibrations are available and that specimen dimensions are of sufficient size to meet the size requirements of this test method during testing.

1.6 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.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
2 Summary of Test Method
3 Significance and Use
4 Apparatus
FIG. 1
FIG. 2
5 Specimen Configuration, Size, and Preparation
FIG. 3
FIG. 4
6 FIG. 5
FIG. 6
7 General Procedure
FIG. 7
9 Calculations or Interpretation of Results
10 Report
Precision and Bias
Keywords
11 A1. GUIDELINES FOR DETERMINING CRACK GROWTH RATE, da/dt FOR THE BOLT-LOAD COMPACT SPECIMEN
A1.1 Scope
A1.2 Terminology
A1.3 Significance of Use
A1.4 Specimen
A1.5 Calculation and Interpretation
A1.6 Data Reduction Technique
12 A1.7 Determination of Crack Growth Rate—da/dt
A1.8 Validation of Results
REFERENCES

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