This study designed and fabricated polyurethane-based granular ceramic/polyurethane composites. The dynamic mechanical properties and anti-penetration performance of different composites were systematically investigated by varying the hardness of the polyurethane matrix and the material composition of ceramic spheres. Penetration experiments revealed that composites with higher polyurethane matrix hardness exhibited larger damage areas on the rear elastic surface while maintaining favorable anti-penetration performance. Among various ceramic spheres tested, alumina ceramic beads demonstrated superior ballistic resistance. Finite element simulations were employed to reconstruct the penetration failure modes of the composites with enhanced precision. The simulation results indicate that high-hardness ceramic spheres serve as the primary factor contributing to both the excellent anti-penetration characteristics and the extensive damage area observed in post-impact composite structures.
Guangping et al. (Mon,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: