ASTM E292-01
(Test Method)Standard Test Methods for Conducting Time-for-Rupture Notch Tension Tests of Materials
Standard Test Methods for Conducting Time-for-Rupture Notch Tension Tests of Materials
SIGNIFICANCE AND USE
Rupture life of notched specimens is an indication of the ability of a material to deform locally without cracking under multi-axial stress conditions, thereby redistributing stresses around a stress concentrator.
The notch test is used principally as a qualitative tool in comparing the suitability of materials for designs that will contain deliberate or accidental stress concentrators.
SCOPE
1.1 These test methods cover the determination of the time for rupture of notched specimens under conditions of constant load and temperature. These test methods also includes the essential requirements for testing equipment.
1.2 The values stated in inch-pound units are to be regarded as the standard. The units in parentheses are for information only.
1.3 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.
General Information
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Standards Content (Sample)
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Designation: E 292 – 01
Standard Test Methods for
Conducting Time-for-Rupture Notch Tension Tests of
1
Materials
This standard is issued under the fixed designation E 292; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 633 Guide for Use of Thermocouples in Creep and Stress
3
Rupture Testing to 1000°C (1800°F) in Air
1.1 These test methods cover the determination of the time
E 1012 Practice for Verification of Specimen Alignment
for rupture of notched specimens under conditions of constant
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Under Tensile Loading
load and temperature. These test methods also includes the
2.2 Military Standard:
essential requirements for testing equipment.
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MIL-STD-120 Gage Inspection
1.2 The values stated in inch-pound units are to be regarded
as the standard. The units in parentheses are for information
3. Terminology
only.
3.1 Definitions—The definitions of terms relating to creep
1.3 This standard does not purport to address all of the
testing, which appear in Section E of Terminology E6 shall
safety concerns, if any, associated with its use. It is the
apply to the terms used in these test methods. For the purpose
responsibility of the user of this standard to establish appro-
of this practice only, some of the more general terms are used
priate safety and health practices and determine the applica-
with the restricted meanings given below.
bility of regulatory limitations prior to use.
3.2 Definitions of Terms Specific to This Standard:
2. Referenced Documents 3.2.1 axial strain—the average of the strain measured on
opposite sides and equally distant from the specimen axis.
2.1 ASTM Standards:
3.2.2 bending strain—the difference between the strain at
A 453/A453M Specification for High-Temperature Bolting
the surface of the specimen and the axial strain. In general, it
Materials, with Expansion Coefficients Comparable to
2
varies from point to point around and along reduced section of
Austenitic Steels
3
the specimen.
E4 Practices for Force Verification of Testing Machines
3.2.3 gage length—the original distance between gage
E6 Terminology Relating to Methods of Mechanical Test-
3 marks made on the specimen for determining elongation after
ing
3
fracture.
E8 TestMethodsforTensionTestingofMetallicMaterials
3.2.4 length of the reduced section—the distance between
E74 Practice of Calibration of Force-Measuring Instru-
tangent points of the fillets that bound the reduced section.
ments for Verifying the Load Indication of Testing Ma-
3 3.2.5 The adjusted length of the reduced section is greater
chines
than the length of the reduced section by an amount calculated
E 139 Practice for Conducting Creep, Creep-Rupture, and
3 to compensate for the strain in the fillets adjacent to the
Stress-Rupture Tests of Metallic Materials
reduced section.
E 220 Test Method for Calibration of Thermocouples by
4 3.2.6 maximum bending strain—the largest value of bend-
Comparison Techniques
ing strain in the reduced section of the specimen. It can be
calculatedfrommeasurementsofstrainatthreecircumferential
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These test methods are under the jurisdiction of ASTM Committee E28 on
positions at each of two different longitudinal positions.
Mechanical Testing and is the direct responsibility of Subcommittee E28.04 on
3.2.7 reduced section of the specimen—the central portion
Uniaxial Testing.
of the length having a cross section smaller than that of the
Current edition approved Nov. 15, 2005. Published December 2001. Originally
e1
published as E 292 – 66 T. Last previous edition E 292 – 83 (Reapproved 1996) .
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Annual Book of ASTM Standards, Vol 01.01.
3 5
Annual Book of ASTM Standards, Vol 03.01. Available from Standardization Documents Order Desk, Bldg. 4, 700 Robbins
4
Annual Book of ASTM Standards, Vol 14.03. Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E292–01
ends that are gripped. The reduced section is uniform within or less at the lowest anticipated applied force in the creep-
tolerances prescribed in Test MethodsE8. rupture test. It is recognized that this measurement will not
3.2.8 stress-rupture test—a test in which time for rupture is necessarily represent the performance in the elevated-
measured, no deformation measurements being made during temperature rupture test, but is designed to provide a practical
the test. means of evaluating a given testing machine and its associated
loading train components. Generally, the eccentricity of load-
4. Signific
...
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