Surface residual stress in soda-lime glass evaluated using instrumented spherical indentation testing

Instrumented spherical indentation testing is proposed as a non-destructive way to evaluate surface residual stress in soda-lime glass. 10 μm-deep indentations with a spherical indenter of 250 μm radius do not reduce the strength of 3.5-mm-thick soda-lime glass as measured in four-point bending test...

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Bibliographic Details
Published inJournal of materials science Vol. 50; no. 23; pp. 7752 - 7759
Main Authors Ahn, Seung-min, Park, Sun-Young, Kim, Young-Cheon, Lee, Kang-Sun, Kim, Ju-Young
Format Journal Article
LanguageEnglish
Published New York Springer US 01.12.2015
Springer
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Compressive properties
Crystallography and Scattering Methods
Destructive testing
glass
Hardness
Heat treatment
Indentation
limes
Linearity
Materials Science
Nondestructive testing
Original Paper
Polymer Sciences
Residual stress
Soda-lime glass
Solid Mechanics
Surface Residual Stress
Indentation Testing
Indentation Depth
Spherical Indenter
Indentation Force
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Summary:Instrumented spherical indentation testing is proposed as a non-destructive way to evaluate surface residual stress in soda-lime glass. 10 μm-deep indentations with a spherical indenter of 250 μm radius do not reduce the strength of 3.5-mm-thick soda-lime glass as measured in four-point bending tests. We find good linearity between the compressive surface residual stress and the force difference at maximum indentation depth in the indentation force–depth curve, while hardness as measured by instrumented spherical indentation testing is independent of compressive surface residual stress introduced by bending and strengthening heat treatment.
Bibliography:http://dx.doi.org/10.1007/s10853-015-9345-x
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-015-9345-x