On the initial unloading slope in indentation of elastic-plastic solids by an indenter with an axisymmetric smooth profile

Che Min Cheng, Yang Tse Cheng

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)2623-2625
Number of pages3
JournalApplied Physics Letters
Volume71
Issue number18
DOIs
StatePublished - Nov 3 1997

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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