Mechanical Similarity Principle for Measurement Metal Hardness

Abstract

The article is devoted to improving the accuracy measuring hardness metals based on the principle similarity mechanical. Hardness test homogeneous solid by means indentation static tip rigid into its flat surface by a force normal to this plane is considered. Volumes that have experienced plastic and elastic deformation in the process of the indentation do not have distinct and definite boundaries. Deformation degree within these volumes is as variable as the stresses causing it. The application relationship empirical between the applied static load and the restored indent diameter indent is shown.