On the correlation of indentation experiments
- 21 April 1977
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 10 (6) , 949-956
- https://doi.org/10.1088/0022-3727/10/6/019
Abstract
The relationship between indentation pressure produced by cones, pyramids and spheres, and the mechanical properties of elastic-plastic materials is considered, based on previous work which uses the expansion of a cavity in an elastic-plastic material. According to the earlier model, there are three zones: a hydrostatic 'core' of which the indenter is embedded; a hemispherical shell, where plastic flow is taking place; and beyond this the elastic hinterland. An improved correlation with experimental results is obtained if it is assumed that the hemispherical core is a region in which the stresses are changing from purely hydrostatic to values which satisfy the Von Mises yield criterion. A further improvement results if a correction is made for the lack of geometric similarity of the strain field in indentations by spheres.Keywords
This publication has 8 references indexed in Scilit:
- Plastic indentation in metals with conesPublished by Elsevier ,2002
- The indentation behaviour of hard metalsJournal of Physics D: Applied Physics, 1976
- The determination of the relationship between strain and microhardness by means of visioplasticityMetallurgical Transactions, 1973
- The elasto‐plastic indentation of a half‐space by a rigid sphereInternational Journal for Numerical Methods in Engineering, 1971
- The correlation of indentation experimentsJournal of the Mechanics and Physics of Solids, 1970
- The indentation of materials by wedgesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1969
- Plastic flow in glassProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1964
- The theory of indentation and hardness testsProceedings of the Physical Society, 1945