A simple relationship between the initial unloading slope, the contact area, and the elastic modulus is derived for indentation in elastic-plastic solids by an indenter with an arbitrary axisymmetric smooth profile. Although the same expression was known to hold for elastic solids, the new derivation shows that it is also true for elastic-plastic solids with or without work hardening and residual stress. These results should provide a sound basis for the use of the relationship for mechanical property determination using indentation techniques.
|Number of pages||3|
|Journal||Applied Physics Letters|
|State||Published - Nov 3 1997|
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)