ASTM E 1681 Standard Test Method for Determining Threshold Stress Intensity Factor for Environment-Assisted Cracking of Metallic Materials
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ASTM E 1681 Document Information:
Title
Standard Test Method for Determining Threshold Stress Intensity Factor for Environment-Assisted Cracking of Metallic Materials
ASTM International
Publication Date:
Sep 10, 2003
Scope:
This test method covers the determination of the environment-assisted
cracking threshold stress
intensity factor parameters, KIEAC and KEAC, 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.
This test method is applicable to environment-assisted cracking in
aqueous or other aggressive
environments.
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.
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.
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.
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.
Keywords:
- aqueous agressive environment
- constant-force test
- elastic stress
- environment-assisted cracking
- metallic materials
- threshold stress intensity factor
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