Stress measurement with non-indentation Metadata

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Title

  • Main Title Stress measurement with non-indentation

Creator

  • Author: Jakus, K.
    Creator Type: Personal
    Creator Info: Univ. of Massachusetts, Amherst, MA (United States)
  • Author: Evans, N.D.
    Creator Type: Personal
    Creator Info: Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.
  • Author: Hay, J.C.
    Creator Type: Personal
    Creator Info: IBM Research, Yorktown Heights, NY (United States). T.J. Watson Research Center

Contributor

  • Sponsor: United States. Department of Energy. Office of Energy Research.
    Contributor Type: Organization
    Contributor Info: USDOE Office of Energy Research, Washington, DC (United States)
  • Sponsor: National Science Foundation (U.S.)
    Contributor Type: Organization
    Contributor Info: National Science Foundation, Washington, DC (United States)

Publisher

  • Name: Oak Ridge National Laboratory. Metals and Ceramics Division.
    Place of Publication: Tennessee
    Additional Info: Oak Ridge National Lab., Metals and Ceramics Div., TN (United States)
  • Name: Oak Ridge Institute for Science and Education
    Place of Publication: Tennessee
    Additional Info: Oak Ridge Inst. for Science and Education, TN (United States)

Date

  • Creation: 1998-11

Language

  • English

Description

  • Content Description: The feasibility of using nano-indentation to measure residual stress in glasses was studied. Indents were placed on the side of flexure specimens at four different distances from the neutral axis while the specimens were under load in four-point-bending. Three different glasses (soda-lime, boro-silicate, and fused silica) were indented with a cube-corner indenter using 2 to 30 mN indentation loads. A high resolution scanning electron microscope was used to measure the length of the cracks emanating from the corners of the indents while the specimen remained under load. The measured crack lengths were correlated to the local stress using indentation theory. For the correlation, elastic beam theory was used to calculate the magnitude of the local stress at the indentation sites. Results derived from crack lengths were in good agreement with local stress within experimental scatter. However, this scatter was found to be rather large as a result of the stochastic nature of crack formation. It can be concluded from this study that nano-indentation can be used to measure residual surface stresses with high spatial resolution provided that a sufficient number of indents are used to assure good statistical accuracy.
  • Physical Description: 6 p.

Subject

  • Keyword: Cracks
  • Keyword: Correlations
  • STI Subject Categories: 36 Materials Science
  • Keyword: Crack Propagation
  • Keyword: Glass
  • Keyword: Experimental Data
  • Keyword: Residual Stresses

Source

  • Conference: Innovative materials in advanced energy technologies, Florence (Italy), 14-19 Jun 1998

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Report

Format

  • Text

Identifier

  • Other: DE99000211
  • Report No.: ORNL/CP--99248
  • Report No.: CONF-980604--
  • Grant Number: AC05-96OR22464;AC05-76OR00033
  • DOI: 10.2172/676871
  • Office of Scientific & Technical Information Report Number: 676871
  • Archival Resource Key: ark:/67531/metadc702873

Note

  • Display Note: OSTI as DE99000211