Towards understanding the ballistic performace of ceramics

加拿大Grey Ghost Gear(GGGC)是一家包含陶瓷的保护产品制造商，其主要功能是通过高硬度和高硬度击败来袭的弹丸，并随后通过断裂分散冲击能量。在这个拟议的为期两年的项目中，阿尔伯塔大学(UofA)将领导一个与GGGC和加拿大国防研究与研究发展(DRDC)合作的项目，以定义关键的微结构和 具有优异防弹性能的碳化硅(第一年)和氧化铝(第二年)材料的机械性能指标。这些指标将在向供应商征求材料时使用。为了实现我们的目标，我们追求三项任务：.材料特性：评估微结构特征(例如，气孔)和化学成分 使用扫描电子显微镜工具进行定位。2.试验：评价材料的强度、刚度、断裂韧性、硬度和破坏行为。我们还将在HP White对裸瓷砖和装甲组件进行弹道实验，跟踪性能结果(例如，失败/不失败、背面变形)。3.结果的应用：任务1和任务2的数据将有助于在DRDC开发陶瓷行为的计算模型。这些模型将通过碰撞模拟提供对陶瓷性能的更多了解。完成后，我们将通过开发测试和模型将弹道性能与微观结构和机械性能指标联系起来，这将为管理弹道性能的指标提供见解。将这项研究转移到工业中将为GGGC和其他寻求开发下一代材料的国防、航空航天和自然资源行业提供竞争优势。同时，这项研究将提供一些最完整的数据集 微观结构、力学性能、性能、失效和冲击性能。

Grey Ghost Gear of Canada (GGGC) is a manufacturer of protection products that incorporate ceramics, where their main function is to defeat incoming projectiles with their high stiffness and hardness, and subsequent ability to dissipate impact energy through fracture. In this proposed two-year project, the University of Alberta (UofA) will lead a project in collaboration with GGGC and Defence Research and Research Development Canada (DRDC) to define key microstructure and mechanical property metrics of silicon carbide (year 1) and alumina oxide (year 2) materials that exhibit superior ballistic performance. These metrics will be used during solicitations of materials from suppliers. To accomplish our objective, we pursue three tasks:.Material Characterization: Evaluate microstructural features (e.g., pores) and chemical c mpositions using Scanning Electron Microscopy tools. 2.Experimentation: Evaluate the strength, stiffness, fracture toughness, hardness, and failure behavior. We will also perform ballistic experiments at HP White on both bare tiles and armor packages, where we will track performance outcomes (e.g., defeat/not defeat, backface deformation). 3.Application of Results: Data from Task 1 and 2 will aid in the development of computational models of ceramic behavior at DRDC. These models will provide additional insights into ceramic \ performance through impact simulation. When complete, we will link ballistic performances with microstructure and mechanical property metrics through the development of test and models, and this will provide insights in the metrics that govern ballistic performance. The transfer of this research to industry will provide competitive advantages to GGGC and others in defense, aerospace, and natural resource industries who are seeking to develop next-generation materials. At the same time, this research will provide some of the most c mplete set of data on microstructure, mechanical, properties, failure, and impact performance in the literature.