Fractoluminescence characterization of the energy dissipated during fast fracture of glass
arXiv:1207.0113 · doi:10.1209/0295-5075/99/28003
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.
Accepted for publication in Europhysics Letters; 5 pages; 4 figures