Failure Mechanisms of Ceramics Under Quasi-Static and Dynamic Loads: Overview

Characterization of the dynamic mechanical properties of low-iron float glass through Split-Hopkinson-Pressure-Bar tests

“…It is generally understood that the dominant failure mechanism of brittle (or quasi-brittle) materials, such as concrete, ceramics and glass, involves crack initiation, propagation, interaction and coalescence. Due to micro-inertia effects associated with the limited propagating speed of cracks, the process for the crack to open and grow is inhibited (or delayed) when the stress increases more rapidly than the crack propagation, leading to a retarded crack opening process and an increased failure strength [29][30][31] . On the other hand, multiple cracks of different sizes are driven simultaneously at a higher loading speed and higher stress level, which results in a significant reduction in the size of fragment as well as a higher material strength as compared to quasi-static loading.…”

Shear‐induced amorphization in boron subphosphide (B12P2): Direct transition versus stacking fault mediation

“…For example, dislocations in diamond and boron‐rich ceramics are rarely observed in ambient conditions under conventional loadings because of the high lattice resistance and high‐energy barrier 1,2 . Instead, other deformation mechanisms, such as lattice distortion, grain rotation, grain boundary sliding, and amorphization, are observed and suggested for the failure of strong ceramics 3–7 . Especially, the amorphization has been observed in many ceramics such as boron‐rich compounds, α‐quartz, and silicon carbide and plays a dominant role in their fracture failure 7–11 .…”