A numerical study of factors affecting the characterization of nanoindentation on silicon

Tong Hong Wang, Te Hua Fang, Yu Cheng Lin

Research output: Contribution to journalArticlepeer-review

75 Citations (Scopus)

Abstract

In this paper, the responses of nanoindentation on bulk silicon were investigated using finite element analysis. A two-dimensional finite element model under the assumption of axisymmetry was successfully validated by the experimental load-displacement curve. Four factors: coefficient of friction, indentation depth, tip rounding and indenter geometry were investigated to characterize the induced responses of bulk silicon via load-displacement curve, indentation surface profile at the maximum loading depth, residual surface profile after unloading, plastic energy, elastic energy, Young's modulus, hardness, and elastic recovery. Coefficients of friction were found to be insignificant, but the von Mises stress distributions after unloading between frictionless and frictional surfaces, indentation depth, tip rounding, and indenter geometry all showed having a distinct effect on stress, plastic energy, elastic energy, Young's modulus, hardness, elastic recovery and surface profile. The degree of pile-up affecting the investigated factors is discussed as well.

Original languageEnglish
Pages (from-to)244-253
Number of pages10
JournalMaterials Science and Engineering A
Volume447
Issue number1-2
DOIs
Publication statusPublished - 2007 Feb 25

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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