1. Scope

1.1 This test method covers the determination of the environment-assisted cracking threshold stress intensity factor parameters, KIEAC and KEAC, for metallic materials from constant-load testing of fatigue precracked beam or 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 load. 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.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D1141 Practice for the Preparation of Substitute Ocean Water

E8/E8M Test Methods for Tension Testing of Metallic Materials

E399 Test Method for Linear-Elastic Plane-Strain Fracture Toughness K Ic of Metallic Materials

E647 Test Method for Measurement of Fatigue Crack Growth Rates

E1823 Terminology Relating to Fatigue and Fracture Testing

G1 Practice for Preparing, Cleaning, and Evaluating Corrosion Test Specimens

G5 Reference Test Method for Making Potentiostatic and Potentiodynamic Anodic Polarization Measurements

G15 Terminology Relating to Corrosion and Corrosion Testing

Keywords

aqueous agressive environment; constant-force test; elastic stress; environment-assisted cracking; metallic materials; threshold stress intensity factor; Constant force/displacement testing; Cracking--metallic materials; EAC (environmentally assisted cracking); Fatigue cracking analysis; Loading tests--metals/alloys; Stress--environmental effects; Stress--metallic materials; Stress cracking tests; Threshold analysis; Threshold stress intensity factors;

ICS Code

ICS Number Code 91.080.10 (Metal structures)

DOI: 10.1520/E1681-99E01

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