Towards understanding the ballistic performace of ceramics

Grey Ghost Gear of Canada（GGGC）是一家采用陶瓷的防护产品制造商，其主要功能是利用其高刚度和硬度击败来袭的射弹，并随后通过断裂耗散冲击能量。在这个拟议的两年期项目中，阿尔伯塔大学（UofA）将与GGGC和加拿大国防研究和研究发展（DRDC）合作领导一个项目，以确定关键的微观结构， 碳化硅（第1年）和氧化铝（第2年）材料的机械性能指标，表现出上级的防弹性能。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，我们追求三个任务：材料表征：评估微观结构特征（例如，孔隙）和化学 使用扫描电子显微镜工具进行化学合成。2.实验：评估强度、刚度、断裂韧性、硬度和失效行为。我们还将在HP白色对裸瓦片和装甲包进行弹道实验，在那里我们将跟踪性能结果（例如，失效/未失效、背面变形）。3.结果的应用：任务1和2的数据将有助于DRDC陶瓷行为计算模型的开发。这些模型将通过冲击模拟提供对陶瓷性能的额外见解。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领域将为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， 微观结构、机械性能、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.