Simulations of nanowire bend tests for extracting mechanical properties

E. Celik, I. Guven, E. Madenci

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Mechanical properties of nickel nanowires are characterized based on the numerical simulations of bend tests performed with a customized atomic force microscope (AFM) and scanning electron microscope (SEM). Nickel nanowire specimens are subjected to bending loads by the tip of the AFM cantilever. The experimental force versus bending displacement curves are compared against simulations from finite element analysis and peridynamic theory, and the mechanical properties are extracted based on their best correlations. Similarly, SEM images of fractured nanowires are compared against peridynamic failure simulations. The results of this study reveal that nickel nanowires have significantly higher strengths than their bulk counterparts, although their elastic modulus values are comparable to bulk nickel modulus values.

Original languageEnglish (US)
Pages (from-to)185-191
Number of pages7
JournalTheoretical and Applied Fracture Mechanics
Volume55
Issue number3
DOIs
StatePublished - Jun 1 2011
Externally publishedYes

Keywords

  • Modulus
  • Nanowires
  • Yield stress

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

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