Critical fatigue behaviour in brittle glasses

The dynamic fatigue fracture behaviour in different glasses under various s ub-threshold loading conditions are analysed here employing an anomalous di ffusion model. Critical dynamical behaviour in the time-to-fracture and the growth of the micro-crack sizes, similar to that observed in such material s in the case of quasi-static ("instantaneous") failures for above-threshol d conditions, are predicted and compared with some of the experimental obse rvations in different glasses.