ASTM E143-01

Standard Test Method for Shear Modulus at Room Temperature

SCOPE
1.1 This test method covers the determination of shear modulus of structural materials. This test method is limited to materials in which, and to stresses at which, creep is negligible compared to the strain produced immediately upon loading. Elastic properties such as shear modulus, Young's modulus, and Poisson's ratio are not determined routinely and are generally not specified in materials specifications. Precision and bias statements for these test methods are therefore not available.
1.2 Values stated in inch-pound units are to be regarded as the standard. SI units are provided for information only.
1.3 t 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

• Status: Historical
• Publication Date: 09-Oct-2001
• ICS: 77.040.10 - Mechanical testing of metals
• Technical Committee: E28 - Mechanical Testing

Relations

• Replaces: ASTM E143-87(1998) - Standard Test Method for Shear Modulus at Room Temperature
• Effective Date: 10-Oct-2001
• Replaced By: ASTM E143-02 - Standard Test Method for Shear Modulus at Room Temperature
• Effective Date: 10-Nov-2002
• Referred By: ASTM F3626-23 - Standard Guide for Additive Manufacturing — Test Artifacts — Accelerated Build Quality Assurance for Laser Beam Powder Bed Fusion (PBF-LB)
• Effective Date: 10-Oct-2001
• Referred By: ASTM C1793-15 - Standard Guide for Development of Specifications for Fiber Reinforced Silicon Carbide-Silicon Carbide Composite Structures for Nuclear Applications
• Effective Date: 10-Oct-2001
• Referred By: ASTM E2207-15(2021) - Standard Practice for Strain-Controlled Axial-Torsional Fatigue Testing with Thin-Walled Tubular Specimens
• Effective Date: 10-Oct-2001
• Referred By: ASTM F3122-14(2022) - Standard Guide for Evaluating Mechanical Properties of Metal Materials Made via Additive Manufacturing Processes
• Effective Date: 10-Oct-2001
• Referred By: ASTM C1783-15 - Standard Guide for Development of Specifications for Fiber Reinforced Carbon-Carbon Composite Structures for Nuclear Applications
• Effective Date: 10-Oct-2001

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: E 143 – 01
Standard Test Method for
1
Shear Modulus at Room Temperature
This standard is issued under the fixed designation E 143; 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.
This standard has been approved for use by agencies of the Department of Defense.
should be suspected if the shear modulus, G, differs from that determined
1. Scope
by substituting independently measured values of Young’s modulus, E,
1.1 This test method covers the determination of shear
and Poisson’s ratio, μ in the relation
modulus of structural materials. This test method is limited to
E
materials in which, and to stresses at which, creep is negligible
G 5 (1)
2~1 1 μ!
compared to the strain produced immediately upon loading.
NOTE 2—In general, it is advisable, in reporting values of shear
Elastic properties such as shear modulus, Young’s modulus,
modulus to state the stress range over which it is measured.
and Poisson’s ratio are not determined routinely and are
3.1.2 torque, [FL]—a moment (of forces) that produces or
generally not specified in materials specifications. Precision
tends to produce rotation or torsion.
and bias statements for these test methods are therefore not
−2
3.1.3 torsional stress [FL ]—the shear stress in a body, in
available.
a plane normal to the axis or rotation, resulting from the
1.2 Values stated in inch-pound units are to be regarded as
application of torque.
the standard. SI units are provided for information only.
3.1.4 angle of twist (torsion test)— the angle of relative
1.3 This standard may involve hazardous materials, opera-
rotation measured in a plane normal to the torsion specimen’s
tions, and equipment. This standard does not purport to
longitudinal axis over the gage length.
address all of the safety concerns, if any, associated with its
3.1.5 For definitions of other terms used in this test method,
use. It is the responsibility of the user of this standard to
refer to Terminology E 6.
establish appropriate safety and health practices and deter-
mine the applicability of regulatory limitations prior to use.
4. Summary of Test Method
4.1 The cylindrical or tubular test specimen is loaded either
2. Referenced Documents
incrementally or continuously by applying an external torque
2.1 ASTM Standards:
so as to cause a uniform twist within the gage length.
E 6 Terminology Relating to Methods of Mechanical Test-
4.1.1 Changes in torque and the corresponding changes in
2
ing
2 angle of twist are determined either incrementally or continu-
E 8 Test Methods of Tension Testing of Metallic Materials
ously. The appropriate slope is then calculated from the shear
E 111 Test Method for Young’s Modulus, Tangent Modulus,
2 stress-strain curve, which may be derived under conditions of
and Chord Modulus
either increasing or decreasing torque (increasing from pre-
E 1012 Practice for Specimen Alignment Under Tensile
2 torque to maximum torque or decreasing from maximum
Loading
torque to pretorque).
3. Terminology
5. Significance and Use
3.1 Definitions:
−2 5.1 Shear modulus is a material property useful in calculat-
3.1.1 shear modulus [FL ]—the ratio of shear stress to
ing compliance of structural materials in torsion provided they
corresponding shear strain below the proportional limit of the
follow Hooke’s law, that is, the angle of twist is proportional to
material (see Fig. 1).
the applied torque. Examples of the use of shear modulus are
NOTE 1—The value of shear modulus may depend on the direction in
in the design of rotating shafts and helical compression springs.
which it is measured if the material is not isotropic. Wood, many plastics
NOTE 3—For materials that follow nonlinear elastic stress-strain behav-
and certain metals are markedly anisotropic. Deviations from isotropy
ior, the value of tangent or chord shear modulus is useful for estimating
the change in torsional strain to corresponding stress for a specified stress
1
This test method is under the jurisdiction of ASTM Committee E28 on
or stress-range, respectively. Such determinations are, however, outside
Mechanical Testing and is the direct responsibility of Subcommittee E28.03 on
Elastic Properties.
Current edition approved Oct. 10, 2001. Published November 2001. Originally
published as E 143 – 59 T. Last previous edition E 143– 87 (1998).
2
Annual Book of ASTM Standards, Vol 03.01.
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