What is the ASTM E143 test?

ASTM E143 is used to determine the shear modulus of structural materials.

What is the shear modulus?

Shear modulus is the ratio of shear stress to the shear strain. In other, it measures the rigidity of a body.

What are the factors that influence Shear modulus?

The following factors influence the shear modulus of a material: Size and gradation of the individual particles, Shape of the individual particles, Void ratio or dry density, Confining pressure.

How does ASTM E143 help manufacturers?

It helps the manufacturer to identify the flaws in their material’s structure and enhance its quality.

What should be the geometry of the test sample?

The test specimen used in ASTM E143 testing should be 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 have a 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.

Dr. Bhargav Raval

Dr. Bhargav Raval is a Materials Scientist and Client Engagement Engineer with expertise in nanomaterials, polymers, and advanced material characterization. He holds a Ph.D. in Nanosciences from the Central University of Gujarat, where his research focused on graphene-based materials for flexible electronics. Professionally, he has led R&D in sensor technologies and coatings, including polymer-functionalized piezoelectric sensors for breath-based cancer diagnostics.
In his current role, Dr. Raval works closely with clients to understand technical requirements, design testing strategies, and deliver tailored solutions in materials selection, failure analysis, and performance evaluation. He effectively bridges scientific depth with practical outcomes, ensuring client-focused project execution. With peer-reviewed publications in high-impact journals and a proven record of applying materials science to real-world challenges, Dr. Raval continues to drive innovation at the intersection of research, engineering, and client engagement.

Email: bhargav@infinitalab.com

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