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Applied Physics Letters 100, 23 (2012) 231901
Micro-Brillouin spectroscopy mapping of the residual density field induced by Vickers indentation in a soda-lime silicate glass
Trung Hieu Tran 1, Sébastien Clément 2, Rémy Vialla 2, Damien Vandembroucq 3, Benoit Ruffle 2
(04/06/2012)

High-resolution Brillouin scattering is used to achieve 3-dimensional maps of the longitudinal acoustic mode frequency shift in soda-lime silicate glasses subject to Vickers indentations. Assuming that residual stress-induced effects are simply proportional to density changes, residual densification fields are obtained. The density gradient is nearly isotropic, confirming earlier optical observations made on a similar glass. The results show that Brillouin micro-spectroscopy opens the way to a fully quantitative comparison of experimental data with predictions of mechanical models for the identification of a constitutive law.
1 :  Laboratoire des colloïdes, verres et nanomatériaux (LCVN)
CNRS : UMR5587 – Université Montpellier II - Sciences et techniques
2 :  Laboratoire Charles Coulomb (L2C)
CNRS : UMR5221 – Université Montpellier II - Sciences et techniques
3 :  Physique et mécanique des milieux hétérogenes (PMMH)
CNRS : UMR7636 – Université Pierre et Marie Curie [UPMC] - Paris VI – Université Paris VII - Paris Diderot – ESPCI ParisTech
Physique/Matière Condensée/Science des matériaux