Determination of tensile properties and residual stresses of Ni-Co thin films

Jun Hyub Park, Hong Yeol Bae, Yun Jae Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper reports tensile properties and residual stresses of Ni-Co thin films. To measure elastic (and plastic) properties, direct tensile tests using dog-bone type specimens are performed first. Assuming that residual stresses vary linearly through the film thickness, bending and membrane residual stress components are measured using cantilever beam and T-structure beam specimens, respectively. Averaged values of Young's modulus, yield strength and tensile strength are found to be about 163GPa, 1,700MPa and 2,000MPa, respectively. The membrane and bending residual stress components are found to be about 825MPa and 47MPa, respectively.

Original languageEnglish
Pages (from-to)771-778
Number of pages8
JournalInternational Journal of Precision Engineering and Manufacturing
Volume11
Issue number5
DOIs
Publication statusPublished - 2010 Oct

Keywords

  • Finite element analysis
  • Ni-co thin film
  • Residual stress measurement
  • Tensile properties measurement

ASJC Scopus subject areas

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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