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Influence of the normal load of scratching on cracking and mechanical strength of soda-lime-silica glass

Abstract : The response of glass to a scratch experiment is first reviewed. Then the influence of the applied load on the microcracking pattern, the apparent friction coefficient, and the strength (post scratch test) are studied and discussed for a soda-lime-silica glass (standard window glass composition). As the normal load increases, the depth of the radial crack seems to stabilize at about 100 μm length. Correlatively it is observed that the residual strength of the scratched glass remains at about 40 MPa whatever the scratch load above 0.5 N. Generally, this work contributes theoretically in the understanding of the existing factor controlling scratch in glasses.
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Submitted on : Friday, May 25, 2018 - 11:55:50 AM
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Nasreddine Bensaid, Saci Benbahouche, Fouad Roumili, Jean-Christophe Sangleboeuf, Jean-Benoit Le Cam, et al.. Influence of the normal load of scratching on cracking and mechanical strength of soda-lime-silica glass. Journal of Non-Crystalline Solids, Elsevier, 2018, 483, pp.65-69. ⟨10.1016/j.jnoncrysol.2018.01.004⟩. ⟨hal-01713404v2⟩

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