Chapter 18

Critical Review on Tribometers and Their Contact Mechanism

Sumit Singhal

Sumit Singhal

Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal, India

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Ritwik Agarwal

Ritwik Agarwal

Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal, India

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Rajan Kumar

Rajan Kumar

Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal, India

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R.K. Dwivedi

R.K. Dwivedi

Department of Mechanical Engineering, Maulana Azad National Institute of Technology, Bhopal, India

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First published: 28 July 2022

Summary

The current work is dedicated to critical review on the latest development of various tribological wear test rigs built for numerous applications. Tribometers, or devices to measure friction and wear, are the basic technology used in most of the tribological investigations. With the aid of the CAD line diagram, their working principles and contact mechanisms are explained. The performed experiments correlate process variables and parameters of normal load, wear volume, dissipated energy, and slip speed. Experimental creep curves from twin disc measurements are used to extract the friction parameters required by the numerical algorithms. The effect of pressure and surface contamination on the coefficient of friction is analyzed. The design and construction of a tribometer are discussed, whereupon a dynamic analysis justifies its effectiveness or its applicability for friction and wear measurements. To minimize frictional power losses, it is imperative to improve the tribological characteristics of the material

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