What is it about?

The article presents an apparatus and methodology for friction measurement of particle-continuum/manufactured interfaces. The apparatus helps determine the friction coefficients (sliding and rolling) of particle-continuum materials interfaces under different conditions suitable to geotechnical engineering.

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Why is it important?

This apparatus and method facilitate to determine some fundamental yet critical inputs needed to understand the complex contact behavior of geomaterials and to improvise the numerical simulations to design geotechnical engineering structures accurately. The device can also be used in several other engineering areas dealing with particulate-continuum materials interfaces such as processing, mining, pharmaceuticals, and food industries.


It certainly was a wonderful experience writing this article with my co-author. The effort involved in developing the apparatus was really challenging. I hope the article would be useful for researchers working in the field of micromechanics of granular material.

Prashanth Vangla
Indian Institute of Technology Delhi

The process of developing this apparatus has been both challenging and fascinating for me. Writing this article was a great learning experience. Hope the article would be useful for the researchers working in geomechanics.

Lalit Kandpal
Indian Institute of Technology Delhi

Read the Original

This page is a summary of: An Apparatus for Determining Micromechanical Interface Shear Properties of Geomaterial Contacts, Journal of Testing and Evaluation, February 2023, ASTM International,
DOI: 10.1520/jte20220484.
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