Fracture propagation during impact in three types of ceramics

E. Strassburger , H. Senf , H. Rothenhäusler

Plates of SiC, TiB2 and Al2O3 were impacted edge-on with steel projectiles at striking velocities between 20 m/s and 1000 m/s. Fracture propagation in the specimen was visualised by means of a Cranz-Schardin camera within the first twenty microseconds. The phenomenology of damage is discussed and compared for the different types of ceramics. The velocities of single cracks and crack fronts were measured. The experiments were supplemented by ceramographical investigations of recovered fragments. Void nucleation and coalescence could be identified as the failure mechanism in impacted TiB2.

Domaines: Articles anciens

E. Strassburger, H. Senf, H. Rothenhäusler. Fracture propagation during impact in three types of ceramics. Journal de Physique IV Proceedings, 1994, 04 (C8), pp.C8-653-C8-658. ⟨10.1051/jp4:1994899⟩. ⟨jpa-00253460⟩