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Acoustic Measurement of Elastic Modulus as a Criterion for Grinding Wheel Hardness

Demonstrating that elastic modulus measured by dynamic method is a valid measure of grinding wheel hardness comparable to Norton scale or tear-out resistance.

grindingelastic-modulusndtiet

Author: R. Snoeys

Original Language: French

Abstract

The first part of this study aims to demonstrate the possibility and validity of measuring the elastic modulus of a grinding wheel by dynamic method. An apparatus was built for this purpose and a graphical calculation procedure was developed that takes into account the dimensions of the wheel.

In the second part, proof is given that the elastic modulus can be considered a valid measure of grinding wheel hardness, equivalent to its definition by the Norton scale or by its tear-out resistance.

Key Findings

  • Dynamic measurement of E-modulus is valid and practical
  • E-modulus correlates with traditional hardness measures
  • Graphical calculation methods account for wheel geometry

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