This paper investigates the impact of hybrid fiber structures on the ballistic performance of columnar ceramic/interlayer hybrid fiber composites. Three hybrid fiber composites and one single fiber‐component composite were fabricated. The accuracy of the numerical model was validated through quantitative analysis of matching micro‐CT images with simulation results. The error of the back convex height (BCH) values between the numerical simulation and the micro‐CT was only 2.8%. The error of delamination area at four thickness positions is only 0.7%, 14.7%, 0.3%, and 5.3%, respectively. The quantitative study on the ballistic performance of ceramic/fiber composites indicates that all hybrid fiber composites provide enhanced penetration resistance, with the sandwich structure outperforming the rest. Compared with the C‐U sample, the bullet's remaining velocity and the BCH in the C‐(A/U/A) sample were significantly improved, with reductions of 195 m∙s−1 and 16.6 mm, respectively. During the penetration process, the ceramic/fiber composites mainly exhibited damage failure mechanisms such as ceramic crushing to form ceramic cones, shear failure, and shear‐tensile‐delamination mixed failure. The energy absorption rate (EAR) of ceramic failure was 54.1%–60.2%, the EAR of tension was 12.5%–20.9%, and the EAR of the tension‐delamination‐shearing mixed model was 21.9%–32.8%.Highlights The numerical model is quantitatively validated with micro‐CT results. Ballistic resistance and EARs in six stages are quantitatively analyzed. C‐(A/U/A) composite has superior ballistic resistance compared to C‐U.

中文翻译：

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柱状陶瓷/层间混合纤维复合材料防弹性能和能量吸收行为的定量研究

本文研究了混合纤维结构对柱状陶瓷/层间混合纤维复合材料弹道性能的影响。制备了三种混合纤维复合材料和一种单纤维复合材料。通过对显微 CT 图像与模拟结果的匹配进行定量分析，验证了数值模型的准确性。数值模拟与显微CT的后凸高度（BCH）值的误差仅为2.8%。四个厚度位置的分层面积误差分别仅为0.7%、14.7%、0.3%和5.3%。对陶瓷/纤维复合材料防弹性能的定量研究表明，所有混合纤维复合材料都具有增强的抗穿透性，其中夹层结构的性能优于其他复合材料。与C-U样品相比，C-(A/U/A)样品中子弹的剩余速度和BCH都有显着提高，降低了195 m∙s−1分别为 16.6 毫米和 16.6 毫米。在渗透过程中，陶瓷/纤维复合材料主要表现出陶瓷破碎形成陶瓷锥体、剪切破坏和剪切-拉伸-分层混合破坏等损伤破坏机制。陶瓷失效的能量吸收率（EAR）为54.1%~60.2%，拉伸的EAR为12.5%~20.9%，拉伸-分层-剪切混合模型的EAR为21.9%~32.8%。 该数值模型通过显微 CT 结果进行了定量验证。 对六个阶段的弹道阻力和 EAR 进行了定量分析。 与 C-U 相比，C-(A/U/A) 复合材料具有优异的防弹性能。