Fractoluminescence characterization of the energy dissipated during fast fracture of glass

Author: Pallares G.   Rountree C. L.   Douillard L.   Charra F.   Bouchaud E.  

Publisher: Edp Sciences

E-ISSN: 1286-4854|99|2|28003-28003

ISSN: 0295-5075

Source: EPL (EUROPHYSICS LETTERS), Vol.99, Iss.2, 2012-07, pp. : 28003-28003

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Abstract

Fractoluminescence experiments are performed on two kinds of silicate glasses. All the light spectra collected during dynamic fracture reveal a black-body radiator behaviour, which is interpreted as a crack velocity-dependent temperature rise close to the crack tip. Crack velocities are estimated to be of the order of 1300 m/s and fracture process zones are shown to extend over a few nanometers.