ASTM E143 Test for Shear Modulus at Room Temperature
ASTM E143 is used to determine the shear modulus of structural materials. This test is limited to materials in which creep is negligible compared to the strain produced immediately upon loading. The standard values are stated in SI units.
Average 30% Cost Savings
100% Confidentiality Guarantee
Free, No-obligation Consultation
100% Customer Satisfaction
TRUSTED BY ENGINEERS FROM
ASTM E143 Test for Shear Modulus at Room Temperature
ASTM E143 is used to determine the shear modulus of structural materials. This test is limited to materials in which creep is negligible compared to the strain produced immediately upon loading. The standard values are stated in SI units.
Scope:
ASTM E143 is used to calculate the shear modulus, which determines whether a structural material complies with torsion (torsion is the twisting of an object due to an applied torque). Shear modulus is used in the design of rotating shafts and helical compression springs.
This test is for materials that follow linear elastic stress-strain behavior. The structural material must follow Hooke’s law, which means that the angle of twist should be proportional to the applied torque.
For materials that follow nonlinear elastic stress-strain behavior, the value of tangent or chord shear modulus can be used to calculate the discontinuity between stress and strain. However, this is outside the scope of this ASTM E143 standard.
Elastic properties such as Young’s modulus and Poisson’s ratio are not usually determined and are generally not specified in the material’s specification.
Test Procedure:
The dimensions of the test specimen are measured as per ASTM E143. The cylindrical or the tubular test specimen is aligned and loaded on the fixture that holds the specimen. An external torque is applied to the specimen, which twists the gauge length (the part of the specimen which changes during the test.)
The applied torque and the corresponding changes in the angle of twist are mapped out on a stress-strain curve. The appropriate slope is then calculated from the shear stress-strain curve. The slope could be derived under conditions of either increasing or decreasing torque.
Video 01: Mechanical properties of solids – shear stress and shear strain
Specimen size:
Specimens should be chosen from good, clean material. Slight imperfections near the surface, which would have a negligible effect in determining Young’s modulus, cause significant errors in the shear modulus.
The test specimen used in ASTM E143 testing should be either circular, cylindrical, or tubular. In the case of solid cylinders, the specimen should be straight and of uniform diameter for a length equal to the gauge length plus two to four diameters. Tubes should be straight and of uniform diameter and wall thickness for a length equal to the gauge length plus at least four outside diameters. The gauge length should be at least four times the diameter.
Data:
The following data is calculated in ASTM E143:
Shear modulus for the circular specimen is calculated by:
G=TL/Jθ
G = shear modulus of the specimen,
T = torque,
L = gauge length,
J = polar moment of inertia of the section about its center, and
θ = angle of twist, in radians.
For a solid cylinder:
D = diameter.
For a tube:
D0 = outside diameter, and
Di = inside diameter.
Conclusion:
ASTM E143 is used to calculate the shear modulus, which determines whether a structural material complies with torsion (torsion is the twisting of an object due to an applied torque).
ASTM E572 test method covers the analysis of stainless and alloy steels by Wavelength Dispersive X-ray Fluorescence Spectrometry (WDXRF). It provides rapid, multi-element determinations with sufficient accuracy to assure product quality.
The ASTM D2674 test is a standard test method for the analysis of sulfochromate etch solutions used in the surface preparation of aluminum. The ASTM D2674 standard specifies a method for determining the efficacy of an etchant used to prepare the surface of aluminum alloys for subsequent adhesive bonding.
An immunological method for quantization of Hevea Natural Rubber (HNRL) proteins using rabbit anti-HNRL serum. Rabbits immunized with HNRL proteins react to the majority of the proteins present, and their sera have the capability to detect most if not all the proteins in HNRL.
ASTM G65 measures the resistance of metallic materials to abrasion using the dry sand/rubber wheel apparatus. The quality, durability, and toughness of the sample are determined using this test. Metallic materials are ranked in their resistance to scratching abrasion under a controlled environment.
ASTM E2141 test methods provide accelerated aging and monitoring of the performance of time-dependent electrochromic devices (ECD) integrated in insulating glass units (IGU). This test helps to understand the relative serviceability of electrochromic glazings applied on ECD.
ASTM C724 test method is used in analyzing the quality and ease of maintenance of a ceramic decoration on architectural-type glass. This test method is useful in the acknowledgment of technical standards.
Loading Comments...
Send us a request
Process for testing
STEP 01
You share material and testing requirements with us
STEP 02
You ship your sample to us or arrange for us to pick it up.
STEP 03
We deliver the test report to your email.
Just share your testing requirements and leave the rest on us!
Free, no-obligation consultation
Guaranteed confidentiality
Quick turnaround time
Hassle-free process
Let us combine our capabilities to achieve success!!