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Abstract The main challenge of ceramics in the applications upon shock-wave loading is their functional failure due to crack network extension. A lattice-spring model was employed to explore strategy for… Click to show full abstract
Abstract The main challenge of ceramics in the applications upon shock-wave loading is their functional failure due to crack network extension. A lattice-spring model was employed to explore strategy for modulating and delaying the crack network. It reveals that numerous shear cracks nucleate around collapsing voids. Then, they compose a crack network during extending and interlacing. Propagation velocity of the meso-scale crack network is controlled directly by a macroscopic inelastic deformation wave, which evolves synchronously with void collapse process. Hence, it is practicable to delay the crack network via micro-voids modulation, to improve robustness and lifetime of the shocked ceramics.
Journal Title: Engineering Fracture Mechanics
Year Published: 2019
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