Critical fatigue behaviour in brittle glasses

[摘要] The dynamic fatigue fracture behaviour in different glasses under various sub-threshold loading conditions are analysed here employing an anomalous diffusion model. Critical dynamical behaviour in the time-to-fracture and the growth of the micro-crack sizes, similar to that observed in such materials in the case of quasi-static (``instantaneous”) failures for above-threshold conditions, are predicted and compared with some of the experimental observations in different glasses.

[学科分类] 材料工程

[关键词] Fracture dynamics;critical behaviour;anomalous diffusion.