YAG (Y₃Al₅O₁₂) transparent ceramics have attractive application prospects for transparent armor protection modules because of their excellent light transmittance and anti-ballistic capability. Understanding the fracture behavior and damage mechanism of YAG is necessary for armor design. To explore the damage characteristics of YAG under compression and tension, shock compression and shockless spalling experiments with soft recovery technique are conducted. The spall strength of YAG is obtained and the recovered samples are observed by CT and SEM. It is shown that the macroscopic damage characteristic of YAG under compression is vertical split cracks with oblique fine cracks distributed in the entire sample, while that under tension is horizontal transgranular cracks concentrated near the main spall surface. The cracks generated by macroscopic compression, tension and shear stress extend in similar tensile form at the microscale. The proportion of transgranular fractures on spall surfaces is higher than that of cracks induced by macroscopic compression. Meanwhile, higher loading rate and longer loading duration increase the transgranular fracture percentage.

YAG (Y ₃铝₅ O ₁₂) 透明陶瓷因其优异的透光率和防弹能力，在透明装甲防护模块中具有诱人的应用前景。了解 YAG 的断裂行为和损伤机制对于装甲设计是必要的。为探索YAG在压缩和拉伸作用下的损伤特性，进行了软恢复技术的冲击压缩和无冲击剥落试验。获得了 YAG 的剥落强度，并通过 CT 和 SEM 观察了回收的样品。结果表明，YAG受压宏观损伤特征为垂直裂开裂纹，斜向细裂纹分布于整个试样，而受拉则为水平穿晶裂纹集中在主剥落面附近。宏观压缩产生的裂缝，拉伸和剪切应力在微观尺度上以相似的拉伸形式延伸。剥落表面的穿晶断裂的比例高于宏观压缩引起的裂纹。同时，较高的加载速率和较长的加载持续时间会增加穿晶断裂百分比。