A new approach to measure the elastic-plastic properties of bulk materials using spherical indentation

Manhong ZHAO, Nagahisa OGASAWARA, Norimasa CHIBA, Xi CHEN*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

168 Citations (Scopus)

Abstract

Spherical indentation has the potential for measuring the elastic-plastic properties of a power-law hardening bulk specimen with just one simple test. In this paper, based on a new definition of representative strain, a set of dimensionless functions that relate the indentation characteristics and material properties are established by means of extensive finite element analyses. A new numerical algorithm of reverse analysis is proposed to extract the elastic-plastic properties of bulk materials from one indentation test. This method is applicable to a wide range of power-law hardening materials. Good agreement is found between the material properties obtained from the reverse analysis of the new approach and experimental data.

Original languageEnglish
Pages (from-to)23-32
Number of pages10
JournalActa Materialia
Volume54
Issue number1
Early online date30 Sept 2005
DOIs
Publication statusPublished - Jan 2006
Externally publishedYes

Bibliographical note

The work is supported in part by NSF CMS-0407743, and in part by the Department of Civil Engineering and Engineering Mechanics, Columbia University.

Keywords

  • Finite element analysis
  • Microindentation
  • Plastic deformation

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